bluuebunny/crossref_metadata_2025 huggingface dataset:
Stereotactic prostate radiotherapy with or without androgen deprivation therapy, study protocol for a phase III, multi-institutional randomized-controlled trial
Authors: Bonù Marco Lorenzo , Magli Alessandro , Tomasini Davide , Frassine Francesco , Albano Domenico , Arcangeli Stefano , Bruni Alessio , Ciccarelli Stefano , De Angeli Martina , Francolini Giulio , Franzese Ciro , Ghirardelli Paolo , Grazioli Luigi , Guerini Andrea , Lancia Andrea , Marvaso Giulia , Sepulcri Matteo , Trodella Luca Eolo , Morelli Vittorio , Georgopulos Andrea , Domina Anastasiya Oleksandrivna , Granello Lorenzo , Mataj Eneida , Barbera Fernando , Triggiani Luca
Published: November 2022

Objective:

The therapeutic landscape for localized prostate cancer (PC) is evolving. Stereotactic radiotherapy (SRT) has been reported to be at least not inferior to standard radiotherapy, but the effect of androgen deprivation therapy (ADT) in this setting is still unknown and its use is left to clinical judgment. There is therefore the need to clarify the role of ADT in association with SRT, which is the aim of the present study.

Methods:

We present a study protocol for a randomized, multi-institutional, Phase III clinical trial, designed to study SRT in unfavorable intermediate and a subclass of high-risk localized PC. Patients (pts) will be randomized 1:1 to SRT + ADT or SRT alone. SRT will consists in 36.25 Gy in 5 fractions, ADT will be a single administration of Triptorelin 22.5 mg concurrent to SRT. Primary end point will be biochemical disease-free survival. Secondary end points will be disease-free survival, freedom from local recurrence, freedom from regional recurrence, freedom from distant metastasis and overall survival (OS); quality of life QoL and patient reported outcomes will be an exploratory end point and will be scored with EPIC-26, EORTC PR 25, IPSS, IIEF questionnaires in SRT + ADT and SRT alone arms. Moreover, clinician reported acute and late toxicity, assessed with CTCAE v. 5.0 scales will be safety end points.

Results:

Sample size is estimated of 310 pts. For acute toxicity and quality of life results are awaited after 6 months since last patient in, whereas, for efficacy end points and late toxicity mature results will be available 3–5 years after last patient in.

Conclusion:

Evidence is insufficient to guide decision making concerning ADT administration in the new scenario of prostate ultra-hypofractionation. Hence, the need to investigate the ADT role in SRT specific setting.

Advances in knowledge:

The stereotactic prostate radiotherapy with or without ADT trial (SPA Trial) has been designed to establish a new standard of care for SRT in localized unfavorable intermediate and a subclass of localized high risk PC.
Περιβαλλοντική Επικοινωνία σε MME
Authors: Κλουβιδάκη Μαρία , Αντωνόπουλος Νίκος
Published: November 2022

Ο σκοπός αυτής της έρευνας είναι να διαπιστωθεί κατά πόσο οι ειδησεογραφικές ιστοσελίδες στην Ελλάδα, ασχολούνται με θέματα περιβαλλοντικού ενδιαφέροντος και αντίστοιχα τι συμβαίνει με τις ειδησεογραφικές ιστοσελίδες της Αμερικής. Πρόκειται για μία ερμηνευτική και ποιοτική έρευνα χαρακτήρας της είναι ως επί το πλείστων διερευνητικός με στόχο να αναλύσει σε θεωρητικό επίπεδο τα γεγονότα. Τα αποτελέσματα υπογραμμίζουν τη σημασία των περιβαλλοντικών ειδήσεων ενώ καταδεικνύουν το πρόβλημα που υπάρχει με τις ειδησεογραφικές ιστοσελίδες, οι οποίες δεν δίνουν μεγάλη βαρύτητα σε τέτοιου είδους θέματα. Αυτή η μελέτη μπορεί να θεωρηθεί μεταξύ των πρώτων προσπαθειών για την ανάλυση του περιεχομένου των ειδησεογραφικών ιστοσελίδων αναφορικά με τα περιβαλλοντικά θέματα. Οι ειδησεογραφικές ιστοσελίδες θα πρέπει να ασχοληθούν περισσότερου με ειδήσεις που αφορούν στο περιβάλλον.
Πολυτροπική περιβαλλοντική επικοινωνία για πολιτισμό, εκπαίδευση, δημοσιογραφία και πληροφόρηση
Authors: Γιαννακοπούλου Αναστασία , Λάππας Γεώργιος , Αναστασιάδου Ζένια , Μαυρίδου Μάρθα
Published: November 2022

H παρούσα εργασία εστιάζει στην πολυτροπική περιβαλλοντική επικοινωνία μέσα από την ανάλυση της περίπτωσης «ΘΕΣ-ΠΡΕΣ: Ταξίδι στο όνειρο», όπου τα ψηφιακά μέσα και η τεχνολογία συνεισφέρουν προς όφελος της γνώσης, της τέχνης, της δικτύωσης και της ενίσχυσης της περιβαλλοντικής ευαισθητοποίησης. Η πολυτροπική περιβαλλοντική επικοινωνία του ΘΕΣ-ΠΡΕΣ αποτελεί μια καινοτόμο περιβαλλοντική επικοινωνιακή δράση που συνεισφέρει στον χώρο του πολιτισμού, της εκπαίδευσης, της δημοσιογραφίας και του μάρκετινγκ μέσα από τις δράσεις ευαισθητοποίησης και ενημέρωσης και τον πρωτότυπο τρόπο ανάδειξης περιβαλλοντικών θεμάτων. Μέσα από την παρούσα έρευνα, διερευνούμε εάν επιτυγχάνεται η ευαισθητοποίηση και η ενεργή εμπλοκή των πολιτών, καθώς και η ενημέρωση γύρω από περιβαλλοντικά ζητήματα, μέσα από δράσεις πολιτισμού. Επίσης, εστιάζουμε στους τρόπους και τα μέσα χάρη στα οποία πετυχαίνει τους στόχους του το ΘΕΣ-ΠΡΕΣ, και κυρίως στον ρόλο της επικοινωνίας και την στρατηγική επικοινωνίας που ακολουθείται για την προβολή, ανάδειξη και εμπλοκή σ’ αυτό το έργο.
Τι κάνει μια εικόνα να αξίζει χίλιες λέξεις;
Authors: Κουτρομάνου Ελίνα , Σωτηράκου Κατερίνα , Μουρλάς Κωνσταντίνος
Published: November 2022

H παρούσα μελέτη αποσκοπεί στην ανάλυση του ρόλου της εικόνας στις δημοσιεύσεις που αναρτώνται στα μέσα κοινωνικής δικτύωσης Μη Κυβερνητικών Οργανισμών και στην πρόβλεψη της δημοφιλίας μιας δημοσίευσης με βάση τα χαρακτηριστικά της εικόνας που περιλαμβάνει. Πιο συγκεκριμένα, απώτερο στόχο αποτελεί η αξιοποίηση των αποτελεσμάτων για την τελεσφόρα επιλογή εικόνων από τους Μη Κυβερνητικούς Οργανισμούς με στόχο την ευαισθητοποίηση και ενημέρωση του μεγαλύτερου δυνατού κοινού. Για την επίτευξη αυτού του στόχου, στην εν λόγω εργασία προτείνεται η ανάλυση και η άντληση των χαρακτηριστικών των εικόνων, που δημοσιεύονται σε προφίλ Μη Κυβερνητικών Οργανισμών στο Facebook και στο Instagram. Στη συνέχεια, τα χαρακτηριστικά αυτά αξιοποιούνται για την ανάπτυξη Αλγορίθμων Μηχανικής Μάθησης, μέσω της γλώσσας προγραμματισμού Python, μέσω των οποίων θα προβλέπεται αν μια δημοσίευση θα είναι δημοφιλής ή όχι, καθώς και ποια χαρακτηριστικά είναι σημαντικά για την πρόβλεψη.
Αξιολόγηση της αποτελεσματικότητας των ιστοτόπων των Πάρκων Σκοτεινού Ουρανού
Authors: Ξανθάκης Μιχαήλ , Σιμάτου Ανδρονίκη , Αντωνόπουλος Νίκος
Published: November 2022

Η συγκεκριμένη μελέτη συσχετίζει το διαδίκτυο και αναλυτικότερα τις ιστοσελίδεςαυτού, με τα παγκοσμίου φήμης Πάρκα Σκοτεινού Ουρανού, αλλά και τη βιωσιμότητα.Ο αειφόρος αυτός τρόπος ζωής, και η διάδοσή του μέσω των ιστοσελίδων τωνπάρκων σκοτεινού ουρανού, καλείται να αποτελέσει το στόχο της παρούσας έρευνας.Ωστόσο, η έρευνα αυτή τέθηκε σε εφαρμογή ανάμεσα στους 190 παγκόσμιουςτόπους σκοτεινού ουρανού, που βρίσκονται σε 29 χώρες. Η ίδια επιτεύχθηκε, με τηχρήση ορισμένων μεταβλητών, οι οποίες κρίθηκαν απαραίτητες και ερωτηματολόγιατα οποία δημιουργήθηκαν, ώστε η δημοσίευση των ιστοσελίδων σε παγκόσμιακλίμακα να χαρακτηρίζεται ολοκληρωμένη. Αναφορικά με τα αποτελέσματα τηςέρευνας γίνεται κατανοητό ότι οι ιστοσελίδες των πάρκων σκοτεινού ουρανούκαταγράφουν χαμηλό επίπεδο ικανοποίησης, καθώς οι περισσότερες από αυτές δενυπάρχουν καν. Τα κριτήρια, αλλά και τα αποτελέσματα που προέκυψαν, γίνονται οθεμέλιος λίθος για την εξέλιξη των ιστοσελίδων των Πάρκων Σκοτεινού Ουρανού ήαλλιώς Dark Sky Parks (DSP).
Υλοποίηση εφαρμογής για κινητό τηλέφωνο για το Γεωπάρκο Κεφαλονιάς και Ιθάκης
Authors: Μίχας Σωτήριος Αθανάσιος , Αντωνόπουλος Νίκος , Ξανθάκης Μιχαήλ , Καναβός Ανδρέας
Published: November 2022

Η παρούσα εργασία αναφέρεται στο Γεωπάρκο Κεφαλονιάς & Ιθάκης και στηνανάγκη δημιουργίας ηλεκτρονικής πλατφόρμας ώστε να γίνει ευρέως γνωστό τοσυγκεκριμένο γεωπάρκο. Αρχικά δίνονται πληροφορίες για τα γεωπάρκα και ταχαρακτηριστικά τους. Στη συνέχεια αφού αναφέρθηκαν τα γεωπάρκα της Ελλάδαςγίνεται παρουσίαση του γεωπάρκου Κεφαλονιάς & Ιθάκης. Αναφέρονται επίσης ταδίκτυα γεωπάρκων σε παγκόσμιο και ευρωπαϊκό επίπεδο και οι κυρίαρχοι στόχοιτους που είναι η προστασία της φυσικής κληρονομιάς, η πολιτιστική αναβάθμιση τηςπεριοχής και η αειφόρος ανάπτυξη. Τέλος παρουσιάζεται η ανάγκη προβολής τωνγεωπάρκων μέσω εφαρμογών για την διευκόλυνση της περιήγησης του επισκέπτη.
Subjetividades e sujeições no fascismo tropical?
Authors: Mizoguchi Danichi Hausen , Ferreira Marcelo , Barros Maria Elizabeth Barros de
Published: November 2022

O artigo se propõe a cartografar as linhas de força que compõem a atualidade de nosso fascismo tropical. Assombrados pela dimensão extrema e radical de violência desejante que se apossou da macro e da micropolítica em nosso país em anos recentes, nos interessa atravessar e compreender essa experiência de passagem – suas condições de possibilidade, suas modulações, suas lógicas. Todavia, eticamente, acreditamos que não é possível estancar nessas detecções: é preciso também mapear e criar brechas de resistência subjetivante que ainda e sempre habita nosso campo de possíveis e nosso plano de impossíveis para que, com elas, possamos paradoxalmente reinventar um país que nunca existiu.
Outras doces barbáries: a força dos carnavais na disputa do presente
Authors: Cecchetti Juliana , Ferreira Marcelo
Published: November 2022

A partir de imersão investigativa sobre os sentidos de carnaval na cidade, o artigo orienta-se para uma abordagem da polissemia do carnaval, em seu sentido histórico-político e na ressonância das imagens de carnaval em vínculos férteis durante o trabalho de investigação. Olhar para o carnaval é, em certa medida, olhar para a história de nossas cidades e dos esforços oficiais de contenção do que nunca será definitivamente governado. O artigo aborda os signos do carnaval que nos mantém conectados com as vozes e os gestos minoritários que inventam a cidade ao se fazerem presentes nela. A cidade, a escrita e o carnaval são os temas que sustentam o argumento do presente artigo.
Por uma Clínica do Trabalho Antirracista
Authors: Oliveira Tatiane , Amador Fernanda Spanier
Published: November 2022

O presente artigo propõe uma discussão no âmbito Clínico do Trabalho indicando que o racismo estrutural está presente na história dos ofícios. Apresenta-se passagens de pesquisa realizada com docentes mulheres negras da educação básica estadual, enfatizando as estratégias das Estilizações Marginais, essas um recurso por elas empregado diante do pacto da branquitude. Propõe-se o debate racial no campo do trabalho visando promover uma Clínica do Trabalho Antirracista.
Por entre conversas e histórias com povos originários para adiar o fim do mundo
Authors: Cruz Cristiane Bremenkamp , Silva Fabio Hebert da , Dias Rosimeri De Oliveira , Hur Domenico Uhng
Published: November 2022

Diante de um cenário de catástrofes no qual coabitamos com desigualdades sociais crescentes, poluição, envenenamento por agrotóxicos, esgotamento das fontes, diminuição do volume dos lençóis freáticos, desmonte de políticas públicas e acirramento de processos excludentes, nossa proposta metodológica, inspirada na obra de Ailton Krenak - Ideias para adiar o fim do mundo -, consiste em contar histórias, como forma de enfrentar o presente e forjar saídas em companhia dos povos originários. Há perguntas que funcionam como disparadoras do campo problemático de nossa escrita coletiva: De que modos podemos nos engajar em experimentações coletivas que buscam tecer possibilidades de um futuro aberto à alteridade e sua própria tessitura comum? Buscaremos responder aos chamamentos de povos da terra como pistas que orientam nossa escritura/ação/coletiva, atentando-nos para o imperativo de politizar o cuidado em relação às redes de interdependência que nos constituem.
Cartografias Clínicas: a produção de narrativas como dispositivo de formação no campo da Psicologia Social e Institucional
Authors: Amador Fernanda Spanier , Gaspary Jaime Carlos Vidarte , Gomes Manoela Guimarães , Vechia Thomaz Chaves Della , Santos Vanessa Felix dos
Published: November 2022

Este artigo apresenta elementos relativos à experimentação da escrita daquilo que chamamos Cartografias Clínicas no escopo da disciplina de Práticas Analítico-Institucionais do curso de Psicologia da Universidade Federal do Rio Grande do Sul. São apresentados trechos de escritas produzidas pelos alunos e alunas a partir de situações experienciadas em seus estágios de ênfase em Psicologia Social e Políticas Públicas como um exercício analítico clínico-institucional dos processos de subjetivação envolvidos, incluindo-se nos seus próprios campos de intervenção, possibilitando a reflexão sobre a “feitura de si” enquanto estagiários e estagiárias em ato.  Discute-se a respeito de Clínica, Processos Institucionais, Cartografia e Narratividade.
Optimising surgical hubs for staff: case studies on training, wellbeing and retention
Authors: Briggs Tim , Kay Peter , Vig Stella , Magallanes Alvin , Rehman Haroon , Fleming Mary , Clough Isobel
Published: November 2022

Surgical hubs are protected facilities dedicated entirely to elective care, with ringfenced resources that allow them to stay active even when emergency pressures rise. These hubs are now seen as a key resource for more robust and sustainable elective services, backed by bodies such as NHS England and the Royal College of Surgeons of England. The importance of a well-trained workforce to staff these hubs cannot be overstated. While evidence for the benefits of surgical hubs for patient care continues to come out, this article will focus instead on the potential benefits for staff. Four case studies will be examined, looking at the experiences of the people who work in these hubs to explore how they can be harnessed as a tool to improve training, retention and overall staff experience.
Supporting midwives in tough times
Authors: Steiner Paul
Published: November 2022

Cavell Nurses' Trust aims to assist healthcare workers experiencing hardship, providing emotional and financial support to nurses, midwives, maternity support workers and healthcare assistants
Mobile phone-based postnatal follow up and maternal health outcomes for low risk mothers
Authors: Ghani Rania Mahmoud Abdel , Khalaf Atika
Published: November 2022

Background/Aim

The immediate postnatal period poses challenges for maternal and newborn health. This study aimed to evaluate the effects of mobile phone-based postnatal follow up on maternal health outcomes among low risk mothers.

Methods

A quasi-experimental design was used to gather data from 70 mothers at a hospital in Egypt. Participants in the study group received information about postnatal self-care and three postnatal phone calls on day 3 (48–72 hours postpartum), between days 7 and 14 and 6 weeks after birth. Participants in the control group received standard care.

Results

Significantly more mothers in the study group were lactating (P=0.01), exercising (P<0.001) and rated their health as very good (P=0.03) than in the control group. Furthermore, more mothers in the control group experienced breast engorgement (P=0.01) and constipation (P=0.002), and 40% were not using contraceptive methods at the end of the puerperium period.

Conclusions

The authors recommend healthcare providers use modern technologies to complement existing care strategies to improve maternal health and reduce risks in a cost-effective way.
Safety netting in midwifery
Authors: Menage Diane , Hogarth Ceinwyn , Batting Eleanor
Published: November 2022

Providing clear, accurate and timely information to women and their families is central to the role of the midwife. It is key to empowering women to make informed decisions and promotes both safety and quality of care. The term ‘safety netting’ has been described as sharing information to help people identify the need to seek further help if their condition fails to improve, changes or if they have concerns about their health. While safety netting is a familiar term in some fields of medicine, it is rarely used in midwifery. This article discusses how safety netting could be a useful concept for midwifery and proposes a framework for providing safety net information. The article includes a clinical scenario that considers how the framework supports clear and comprehensive communication, and a student midwife perspective that reflects on different aspects of safety netting, its teaching and the practice experience. Clear teaching of safety netting has potential advantages for midwifery education and practice.
Treating a gummy smile
Authors: Gewargis Jemma
Published: November 2022

A person's smile frames the face and, arguably, is the most pleasing and meaningful facial expression, as well as a universal sign of happiness. A gummy smile can be a significant aesthetic concern. Its treatment can have a huge impact on a patient's confidence and, consequently, is highly rewarding for practitioners. A substantial improvement in a gummy smile can be achieved with both non-surgical and surgical interventions. The choice of treatment depends on the underlying aetiology, of which there can be multiple. Treatment modalities include botulinum toxin type A, dermal filler, surgical repositioning of the lip, gingivectomy, crown lengthening or a combination of the aforementioned. For each of these methods, it is important to consider its suitability depending on the underlying causes of the gummy smile and the patient's aesthetic goals, as well as any risks or downtime involved.
RESEARCH ROUNDUP
Authors: Mcgloin Claudia
Published: November 2022

In this regular feature, aesthetic nurse Claudia McGloin presents a brief synopsis of a range of recently published articles on medical aesthetics. Research roundup aims to provide an overview, rather than a detailed summary and critique, of the papers selected. Should you wish to look at any of the papers in more detail, a full reference is provided at the end of each study summary
An evaluative report of the practice of mentoring for nurses in aesthetic medicine
Authors: Goddard Rachel
Published: November 2022

Rachel Goddard delves into the topic of mentoring nurses who practise aesthetic medicine
Are advertisements on social media ethical, honest, truthful and, more importantly, legal?
Authors: Knight Dawn
Published: November 2022

The rules relating to advertising in England apply to everyone practising aesthetics, whether they are a registered healthcare professional or a lay practitioner. This article from Dawn Knight presents and considers important information and advice that is designed to assist practitioners in ensuring that advertisements are both ethical and legal
Moving on
Authors: Bernstein Adam
Published: November 2022

Moving premises can be expensive and fraught at the best of times. Adam Bernstein, in collaboration with Jessica Booz and Nathan Hinks, explores the options when contractual issues place obstacles in the way of a relocation
Why mobile user experience is critical for aesthetic businesses in 2022 and beyond
Authors: O'neill Rick
Published: November 2022

Before 2020, it was already the case that the mobile user experience was important for businesses in the aesthetic sector, but now it is critical to survival and growth, says Rick O'Neill. However, what are the common mistakes made with aesthetic clinic mobile experiences, and how can they be solved?
Custom-made triflanged implants in reconstruction of severe acetabular bone loss with pelvic discontinuity after total hip arthroplasty consecutive cohort study
Authors: Winther Sebastian S. , Petersen Michael , Yilmaz Müjgan , Kaltoft Nicolai S. , Stürup Jens , Winther Nikolaj S.
Published: November 2022

Aims

Pelvic discontinuity is a rare but increasingly common complication of total hip arthroplasty (THA). This single-centre study evaluated the performance of custom-made triflange acetabular components in acetabular reconstruction with pelvic discontinuity by determining: 1) revision and overall implant survival rates; 2) discontinuity healing rate; and 3) Harris Hip Score (HHS).

Methods

Retrospectively collected data of 38 patients (39 hips) with pelvic discontinuity treated with revision THA using a custom-made triflange acetabular component were analyzed. Minimum follow-up was two years (mean 5.1 years (2 to 11)).

Results

There were eight subsequent surgical interventions. Two failures (5%) of the triflange acetabular components were both revised because of deep infection. There were seven (18%) patients with dislocation, and five (13%) of these were treated with a constraint liner. One patient had a debridement, antibiotics, and implant retention (DAIR) procedure. In 34 (92%) hips the custom-made triflange component was considered stable, with a healed pelvic discontinuity with no aseptic loosening at midterm follow-up. Mean HHS was 80.5 (48 to 96).

Conclusion

The performance of the custom triflange implant in this study is encouraging, with high rates of discontinuity healing and osteointegration of the acetabular implant with no aseptic loosening at midterm follow-up. However, complications are not uncommon, particularly instability which we successfully addressed with constrained liners. Cite this article: Bone Jt Open 2022;3(11):867–876.
Direct Laser Writing of Single-crystal Waveguides in Oxide Glasses: Mechanisms and Challenges
Authors: Lipatiev A.S. , Lotarev S.V. , Okhrimchuk A.G. , Lipateva T.O. , Fedotov S.S. , Sigaev V.N.
Published: November 2022

We study the process of femtosecond laser-induced growth of a single-crystal channel waveguide in oxide glasses and point out the challenges that must be overcome on the way to the high performance of laser-written crystal architectures.
Mode Transition During Deposition of Nanoscale ITO Coatings on Tilted Fiber Bragg Gratings
Authors: Imas J.J , Albert J. , Villar I. Del , Ozcáriz A. , Zamarreño C. R. , Matías I. R.
Published: November 2022

The mode transition phenomenon is experimentally demonstrated in tilted fiber Bragg gratings (TFBG) through the deposition of an indium tin oxide (ITO) thin film employing a DC sputtering machine.
Photosensitivity response of pulsed 213 nm light in planar Bragg grating writing
Authors: Ahmed Q. Salman , Field James W. , Gow Paul C. , Oo Swe Zin , Holmes Christopher , Bannerman Rex H.S. , Mennea Paolo L. , Gawith Corin B. E. , Smith Peter G.R. , Gates James C.
Published: November 2022

We investigate the dynamics of pulsed 213 nm planar Bragg grating writing for a range of powers and fluences. We report the regime for achieving high index contrast, and where damage is likely to occur.
Fiber Bragg Gratings Embedded in Plasma-Sprayed Ceramics for High Temperature Sensing
Authors: Lerner Alexandre , Quet Aurélie , Cotillard Romain , Lago Laure , Bouwmans Géraud , Laffont Guillaume
Published: November 2022

In-situ monitoring of femtosecond point-by-point written Fiber Bragg Gratings embedding in a ceramic material deposited by plasma-spraying was realized. High temperature measurements were successfully performed on the additively manufactured specimen up to 400°C.
Monitoring the regeneration process of a UV-inscribed FBG using IR femtosecond FBG
Authors: Yazd Nazila Safari , Chah Karima , Mégret Patrice
Published: November 2022

We show the possibility of using a femtosecond IR point-by-point inscribed grating as a probe to monitor the regeneration process of a UV-inscribed grating.
Thermal Stability of Porous Nanogratings Induced by Femtosecond Laser in Silicate Glasses
Authors: Cavillon Maxime , Wang Yitao , Poumellec Bertrand , Lancry Matthieu
Published: November 2022

Nanogratings in silicate glasses can withstand temperatures beyond 1000 °C for several hours. This work discusses the underlying mechanisms constituting their extraordinary thermal stability.
Femtosecond laser-inscribed mid-infrared fiber Bragg gratings with enhanced thermal stability
Authors: Xu Luyi , Johnston Benjamin , Fernandez Toney T , Gross Simon , Withford Michael , Fuerbach Alex
Published: November 2022

Thermally stable fiber Bragg gratings for the mid-IR are demonstrated. While the grating strength and design wavelength typically change during post-annealing, we report here on grating structures which are resilient to temperatures of up to 200°C
Using Fiber Bragg Grating Sensors for Partial Discharge (PD) Detection on Power Cables
Authors: Vendruscolo Ricardo , Gomes Danilo Fernandes , Jahnert Frederico , Weber Guilherme Heim , da Silva Jean Carlos Cardozo , Martelli Cicero , Dreyer Uilian José
Published: November 2022

This paper presents the preliminary results of the Fiber Bragg Gratings sensors temperature/strain cross-sensitivity allied to a low sampling rate to distinguish Partial Discharge (PD) events in power cables.
Dual-wavelength differential detection of tilted fiber Bragg gratings for ppb-level measurement of dissolved ammonia
Authors: Fraņois Ouellette , Liu Shucheng , Li Jianfeng , Albert Jacques
Published: November 2022

The dual-wavelength differential detection method is used to detect dissolved ammonia with a sol-gel coated tilted fiber Bragg grating, achieving a limit of detection of 11 ppb.
Polarization Insensitive FBG inscribed in Polarization Maintaining Fiber with Artificial Anisotropy
Authors: Anuszkiewicz A. , Bouet M. , Stepniewski G. , Kasztelanic R. , Filipkowski A. , Pysz D. , Cassez A. , Mussot A. , Buczynski R. , Bouwmans G. , Osuch T.
Published: November 2022

We present Fiber Bragg Grating (FBG) inscribed in optical fiber, which maintains polarization by artificially anisotropic material in the core. The FBG has single Bragg peak stable for any state of polarization.
Determining the Dispersion of Optical Fibers Over a Broad Spectral Range With an Array of Fs-Written FBGs
Authors: Boilard Tommy , Vallée Réal , Bernier Martin
Published: November 2022

The effective refractive index of five optical fibers is determined by precisely monitoring the Bragg wavelength of multiple FBGs, which is used to infer their dispersion from the visible (550 nm) to the mid-IR (4800 nm).
Impact of variation of duty cycle on SHG generated in multi-layer poled silica structures
Authors: Jafari Seyed Hamed , Smelser Christopher W.
Published: November 2022

In this study we show that varying the duty cycle in poled multi-layer silica structures significantly impacts the magnitude of second harmonic generation (SHG) we observe through Maker fringe measurements.
Direct-laser-writing of ultra-long waveguides in coreless optical fibers
Authors: Colliard Léo , Bellec Matthieu , Bilodeau Guillaume , Boilard Tommy , Vallée Réal , Bernier Martin
Published: November 2022

In this work, we report a direct-laser-writing method, based on the use of a phase-mask, to fabricate long waveguides in coreless optical fibers. Refractive index change can be adjusted by monitoring the writing velocity, the exposure conditions and/or the chemical composition of the coreless optical fiber.
Inscription of Helical Bragg Gratings in Multimode Silica-based Fiber
Authors: Likhov V.V. , Vasiliev S.A. , Alagashev G.K. , Okhrimchuk A.G.
Published: November 2022

Helical Bragg gratings have been inscribed in multimode silica-based fiber by a lenticular-shaped beam waist of the femtosecond laser. Modes with nonzero orbital angular momentum have been observed in reflection spectrum.
Realization of Chirped Volume Bragg Gratings in Fused Silica by Femtosecond Phase Mask Inscription
Authors: Siems Malte P. , Richter Daniel , Goebel Thorsten A. , Krämer Ria G. , Nolte Stefan
Published: November 2022

We demonstrate the first cVBG in fused silica written with ultrashort laser pulses. First steps towards scaling their size to enable applications such as compact, robust and reliable CPA laser systems are shown.
Low loss polarization maintaining anti-resonant hollow core fiber
Authors: Hong Yifeng , Lu Xiaosong , Gao Shoufei , Zhang Zhe , Jia Anqing , Liang Zhi , Ding Wei , Wang Yingying
Published: November 2022

An anti-resonant hollow-core fiber (AR-HCF) with loss of 5.6 dB/km at 1550 nm, phase birefringence of 1.8× 10-5, polarization extinction ratio of ~20 dB and bandwidth of 154 nm is reported, representing the first low loss polarization-maintaining ARF.
Dissipative Chaos in a Single-Mode Ring Resonator with Coupled Light
Authors: Bitha Rodrigues Dikande , Giraldo Andrus , Broderick Neil G. R. , Krauskopf Bernd
Published: November 2022

We investigate the dynamics of light in a single-mode ring resonator and show the existence of various type of chaotic attractors in the vicinity of period-doubling cascades, which accumulate on so-called Shilnikov homoclinic bifurcations.
Design of High-efficiency Visible-Spectrum SiN Grating Coupler Based on Amorphous Silicon Overlay
Authors: Ebrahimipour Mohammadjavad , Yurtsever Günay , Van Dorpe Pol
Published: November 2022

Design of high-efficiency visible-spectrum silicon nitride grating couplers, compatible with CMOS fabrication are proposed. The design is based on amorphous-silicon overlay and distributed-Bragg-reflectors. We simulated 74% and 79% efficiency for 638 nm and 780 nm.
Boost in THz mobility in UMG silicon treated by phosphorous diffusion gettering
Authors: Revuelta Sergio , Dasilva Nerea , Marrón David Fuertes , del Cañizo Carlos , Cánovas Enrique
Published: November 2022

By means of Terahertz Spectroscopy we demonstrate a boost in charge carrier mobility in upgraded-metallurgical grade silicon wafers treated by phosphorous diffusion gettering. Mobilities parallel those of high quality poly-Si.
Finite-size scaling in mean-field equal-coupling photonic networks
Authors: Melchert Oliver
Published: November 2022

The phase transition in fully-connected, multimode equal-coupling photonic networks is studied via methods from statistical mechanics. Finite-size scaling is used to estimate critical points and exponents, yielding a phase diagram in a relevant parameter plane.
Absolute measurements of second-order nonlinear-optical coefficients of LaBGeO5 at UV generating region
Authors: Yamanobe Masaki , Tanaka Ryoichi , Hirayama Naoya , Shoji Ichiro
Published: November 2022

We absolutely measure the second-order nonlinear-optical coefficients of LaBGeO5 at the fundamental wavelength of 532 nm. The determined coefficients are d33=1.15, d22=1.41, d31=d32=0.75 and d11=0.55 pm/V, which are inconsistent with those previously measured at 1064 nm.
Spectral Parameter Power Series and Exact Modes: Analysis for Micro- and -Nano Optical Fiber Tapers
Authors: Castillo-Pérez R. , Ek-Ek J. R. , Jácome-Peñaherrera C. E. , Pérez-Sanchez G.G. , Jáuregui-Vazquez D. , Offerhaus H. L. , Álvarez-Chávez J. A.
Published: November 2022

Modal intensity evolution in taper sections from a sample is analyzed. The use of the Spectral Parameter Power Series (SPPS) method is proposed, and its performance compared with other methods, showing competitive accuracy and versatility.
Transmission Matrix of Cellulose Nanocrystal Coffee Stains
Authors: Dogru-Yuksel Itir Bakis , Danser Roman , Saraiva Diogo , Maathius Kira , Tran Lisa , Mosk Allard
Published: November 2022

Utilizing nature's materials and methods that form structural color, cellulose nanocrystal coffee stains are fabricated by self-assembly, and their polarization-complete transmission matrix is analyzed in terms of their structural orientation.
Breakdown of light transport models in photonic scattering slabs with strong absorption and anisotropy
Authors: Akdemir O. , Lagendijk A. , Vos W. L.
Published: November 2022

We describe light transport in scattering slabs, using P1, P3, and δ-E(4) approximations to radiative transfer equation. We compare these approximations to exact Monte Carlo simulations, present error maps, and define regions of unphysical predictions.
Investigation into multi-pass exposure of 213 nm pulsed UV writing for improved writing response
Authors: Ahmed Q. Salman , Field James W. , Gow Paul C. , Holmes Christopher , Bannerman Rex H.S. , Mennea Paolo L. , Gawith Corin B. E. , Smith Peter G.R. , Gates James C.
Published: November 2022

We demonstrate an increase in achievable refractive index change of 1.2×10-3 in Gedoped silica in writing waveguides and gratings using pulsed 213 nm light to deposit the same total fluence over multiple writing passes.
Polarization Dynamics of Passively Mode-Locked Vertical External-Cavity Surface-Emitting Laser
Authors: Castillo-Pinto Camila , Broda Artur , Muszalski Jan , Song Yufeng , Zhang Han , Panajotov Krassimir
Published: November 2022

We investigate experimentally polarization dynamics of passively mode-locked VECSEL. We demonstrate that the normalized Stokes parameters and degree of polarization are functions of time reaching extreme values at the pulse peaks. Our experiments show that light has vertical, 45° polarization components, and a small amount of circular polarization.
Optimized Cost Function of Multi-Layer Perceptron for Fibre Non-Linear Impairment Mitigation in Coherent 200-Gbps DP-16QAM Transmission System
Authors: Sotomayor Abraham , Pincemin Erwan , Choqueuse Vincent , Morvan Michel
Published: November 2022

We show here that the Huber Cost Function is more efficient than Mean Squared Error metric to train a multi-layer perceptron in strong fibre nonlinear regime for single-channel coherent 200-Gbps Dual-Polarization 16QAM transmission.
A Thin Core Optical Fiber Strain Sensing Setup
Authors: Jauregui-Vazquez D. , Korterik J.P. , Estudillo-Ayala Julián , Offerhaus H. L. , Alvarez-Chavez J.A.
Published: November 2022

An interferometric optical-fiber structure and its strain applications are demonstrated by splicing a conventional single-mode fiber at the end of an interrogation thing-core fiber setup. The sensors show good repeatability, competitive sensitivity, and minimal hysteresis.
High-gain Spontaneous Parametric Down-conversion in Dispersive and Absorbing Nanostructured Systems
Authors: Krstić Aleksa , Setzpfandt Frank , Pertsch Thomas , Saravi Sina
Published: November 2022

We develop a non-perturbative description of spontaneous parametric downconversion in the high-gain regime for nanostructured systems with arbitrary amount of loss and dispersion, and use it numerically to investigate integrated quantum spectroscopy at high gain.
Low Half-Wave-Voltage Lithium Niobate Modulator Using High-K Dielectric Material Cladding
Authors: Alam A. S. , Aitchison J. S.
Published: November 2022

The design of an etched lithium niobate waveguide-based modulator with a high-K dielectric cladding is proposed. Optimized design of the Mach-Zehnder interferometer modulator shows a low half-wave-voltage-length product of ~1.52 V.cm.
Novel femtosecond mid-infrared fiber laser with homemade fiber connectors
Authors: Wang Sheng , Qiao Tian , Wong Kenneth K. Y.
Published: November 2022

A novel self-starting mid-infrared laser scheme was proposed and demonstrated experimentally, simplifying the alignment, and yielding a state-of-the-art 37-nm bandwidth and 2.2-nJ pulse energy output.
Spin and orbital components of the Poynting vector of fundamental core mode in all – solid bandgap fibers
Authors: Alagashev G. K. , Stafeev S. S. , Kotlyar V. V. , Pryamikov A. D.
Published: November 2022

The outflow of fundamental core mode energy for all - solid bandgap fiber is analyzed on the basis of singularities arising in the spin and orbital parts of transverse component of its Poynting vector.
Deep Neural Network for Digital Backpropagation in Few-Mode Optical Fibers
Authors: Tsyplakov Evgeny D. , Milikov Emil A. , Gao Jiexing
Published: November 2022

We propose a deep neural network for compensation of linear and nonlinear interactions in few-mode fibers. We demonstrate that the network can handle six LP modes of an optical fiber with high accuracy.
Four Coherent Dispersive Waves Generation in Dispersion-engineered Si3N4 Slot Waveguide
Authors: Fang Yuxi , Bao Changjing , Wang Zhi , Zhang Weigang , Pan Zhongqi , Yue Yang
Published: November 2022

We propose a novel method to generate four dispersive waves (DWs) by pumping in the normal dispersion regime. It provides the possibility for having an efficient and coherent mid-IR source in the Si3N4 waveguide.
Solution Processed UV-Visible Organic Photodetector with High Responsivity at Low Operating Voltage
Authors: Sahoo Subhamoy , Barah Dhruvajyoti , Xavier Nithin , Dutta Soumya , Ray Debdutta , Bhattacharyya Jayeeta
Published: November 2022

The performance of organic semiconductor photodetectors depends on the choice of materials as the active layers. In this paper, we show that a 1:1 blend of PPDT2FBT-PC71BM blend gives high responsivity of about 0.33 A/W at 660 nm and is operable in the wavelength range of 350 to 720 nm. The causes for high efficiencies at low operating voltages are discussed.
Optimal Positioning of the Nested Elements in Negative Curvature Hollow-core Fibers
Authors: Ordu Mustafa , Akosman Ahmet E.
Published: November 2022

A new negative curvature hollow-core fiber layout with optimally positioned nested elements is presented. Confinement losses of 0.003 dB/km at 1.55 µm are achieved, corresponding to two orders of magnitude improvement compared to conventional designs.
Extremely Dispersive Triple Ring-core Fiber for OAM Mode with Dual Selectable Operating Windows
Authors: Geng Wenpu , Bao Changjing , Zhang Lin , Fang Yuxi , Wang Yingning , Wang Zhi , Liu Weiwei , Ren Yongxiong , Pan Zhongqi , Yue Yang
Published: November 2022

Triple ring-core fiber is designed with two selectable extremely dispersive windows. OAM1,1 mode has a negative dispersion down to -129,964 ps/(nm·km) at 1644.4 nm and -270,017 ps/(nm·km) at 1651 nm with different mode launching locations.
Q-switched pulses in fiber laser based on optical evanescent field interaction with WTe2-graphene saturable absorber
Authors: Li Qianying , Han Mengmeng , Chang Haixin , Li Hongda , Shu Xuewen
Published: November 2022

We demonstrate a Q-switched erbium-doped fiber laser based on WTe2-graphene composite deposited on a tapered fiber. The obtained Q-switching threshold of 25.8mW is reduced by one order of magnitude compared with WTe2 alone.
Underwater FBG temperature sensing for high-power laser
Authors: Gouvea Paula M. P. , Ribeiro Alexandre S. , de Faria G. Vilela , de Moura Luiz F. N. , Ribeiro Natalia , Ribeiro Mario L. P. , Braga Arthur M. B.
Published: November 2022

Reliability of FBG temperature sensors for underwater samples heated by a high-power laser. The sensors installed on the surface of the sample must respond efficiently to its temperature changes while ensuring insulation from the cold surrounding water.
Joint Modulation Format Identification and OSNR Monitoring Based on Stokes Vector Distribution Features
Authors: Pu Zhengyu , Jiang Lin , Yan Lianshan , Yi Anlin , Feng Jiacheng , Pan Wei , Luo Bin
Published: November 2022

We proposed a joint modulation format identification and OSNR monitoring method. Identification accuracies are all 100% and the mean absolute errors of OSNR monitoring are 0.067-dB, 0.118-dB, 0.17-dB, 0.327-dB, 0.345-dB for PDM-QPSK/-8QAM/-16QAM/-32QAM/-64QAM, respectively.
Ignoring the Core-Cladding Interface
Authors: Canning J. , Lancry M. , Zhang J. , Peng G-D.
Published: November 2022

We review recent results analyzing a 3D printed optical fibre and show how ignoring the core-cladding interface to use an effective index approximation when interpreting fibre-based measurements can lead to potential misunderstandings of photo-dependent phenomena, in this case the origin of optical loss in 3D printed fibres.
Improved Opto-electronic Properties of Ultraviolet Laser Diodes by utilizing Step Graded Aluminium concentration in Quantum Barriers
Authors: Ali Shazma , Usman Muhammad , Rasheed Saad
Published: November 2022

The LD design with step graded aluminum concentration from the first quantum barrier (FQB) to the final quantum barrier (LQB) enhances the IQE by 33% and power from 3 mW to 12.2 mW in proposed LD.
Unravelling Excited-State Absorption in NiFe2O4 Nanoparticles
Authors: Aggarwal Naresh , Shinde Pratik V. , Rout Chandra S. , Adarsh K. V.
Published: November 2022

We demonstrate strong nonlinear optical response of excited state absorption (91 ± 8 cm/GW) and negative nonlinearity ((-8.0 ± 0.5) × 10−4 cm2/GW) in NiFe2O4 nanoparticles. The observed nonlinearity is associated with free carrier absorption.
Tunable Dispersive Wave Generation for High Power Supercontinuum Coverage in the Mid-IR and Far-IR Regions
Authors: Ilyas Kiran , Naqvi Qaisar Abbas
Published: November 2022

A dual-core coupled silicon-rich nitride waveguide pumped at telecom wavelength, allowing more power-efficient conversion and dispersive wave engineering in the mid-infrared region up to 7μm wavelength by simulations is demonstrated.
Investigation of carrier-induced bistability in SOI micro-ring resonators for memory applications
Authors: Nikitin Andrey A. , Ryabcev Ilya A. , Ershov Alexander A. , Semenov Alexander A. , Konkin Dmitry A. , Kokolov Andrey A. , Babak Leonid I. , Sheyerman Feodor I. , Ustinov Alexey B.
Published: November 2022

We report on the use of passive micro-ring resonator fabricated with silicon-on-insulator technology for memory applications. We show that the minimal pulse length ensuring the memory operation is limited by 260 ns.
Tilted fiber Bragg grating as Encoder for rapid temperature measurements
Authors: Smith Eric W. , Smelser Christopher W.
Published: November 2022

In this study we demonstrate the use of a tilted fiber Bragg grating as an encoder for sub-millisecond temperature measurements. A similar concept could be extended to include rapid measurements in harsh environments.
Optical sensing of the local glass transition temperature of polymers by TiN:Si structures
Authors: Chernykh E.A. , Kharintsev S.S.
Published: November 2022

We present a new approach to determining the local glass transition temperature (Tg) of a nanosized PMMA polymer deposited on an array of TiN:Si structures by Raman spectroscopy.
Random cladding misalignments and anisotropic deformations in nested hollow-core fibers
Authors: Petry Michael , Habib Md. Selim
Published: November 2022

We analyze the impact of fabrication-based structural imperfections in the cladding elements on the overall guiding performance of hollow-core anti-resonant fibers. The analyzed five-tube fiber exhibits up to 7-fold enhanced single-modeness with increased propagation loss.
SPCR-based spectral broadening in graphene-covered nanowires: a theoretical analysis
Authors: Fierens P. I. , Hernandez S. M. , Linale N. , Grosz D. F.
Published: November 2022

We present a complete analytical description of saturable photoexcited-carrier (SPCR) based broadening in graphene-covered nanowires (GNs), providing physical insight on its dependence on input pulse power and chirp.
THz digital holography: Introduction and practical implementations
Authors: Wan Min , Rong Lu , Healy John J. , Sheridan John T.
Published: November 2022

We review the use of THz radiation in imaging, including in-line and off-axis holographic geometries and homodyne and heterodyne detection operation. We describe physical implementations, processing algorithms and discuss challenges.
Herbal compounds influence on refractive index of neuroblastoma cells based on holographic tomography measurements
Authors: Baczewska Maria , Nowak Natalia , Szymański Jedrzej , Cheng Chau-Jern , Kujawińska Małgorzata
Published: November 2022

Yokukansan (SNY) is a traditional Japanese herbal medicine that is becoming more widely researched for effects on neurodegenerative diseases. In our research we extend the knowledge about the effects of SNY on neuronal cells and we demonstrated for the first time that the effect of different doses of SNY on cell culture can be observed by holographic tomography.
Increasing Diffraction Angle of LCoS Device through Integration with Metasurface
Authors: Chang Xin , Pivnenko Mike , Shrestha Pawan , Wu Weijie , Chu Daping
Published: November 2022

A dielectric Huygens metasurface was designed as a phase gradient and integrated with a phase-only LCoS device, to increase its maximum diffraction angle limited by the pixel size.
Quantitative phase imaging based on single-shot TIE using polarization multiplexing
Authors: Kumar Ravi , Hai Nathaniel , Rosen Joseph
Published: November 2022

A new method for rapid quantitative phase imaging using TIE based on polarization multiplexing has been developed. The technique is well-suited for different types of phase objects, including biological samples, as demonstrated by experimental results.
Tomographic Imaging by Dual Color Incoherent Holographic Lattice Light-Sheet
Authors: Potcoava Mariana , Art Jonathan , Mann Christopher , Alford Simon
Published: November 2022

We present quantitative 3D live nerve cell imaging with subcellular resolution and extended FOV using two-color incoherent holography lattice light-sheet system.
Iterative Single-frame High-bandwidth Complex Wave Retrieval Algorithm
Authors: Luo Gang , Guo Ruiming , Zhou Renjie , Blu Thierry
Published: November 2022

We propose a high-bandwidth complex wave retrieval algorithm from a single off-axis interferogram. A 40% improvement of allowed object wave bandwidth over standard approaches is demonstrated. Despite being iterative, our implementation is efficient.
Multifocal Confocal Fluorescence Microscopy Using Volume Holographic Array Illumination
Authors: Suresh Surag Athippillil , Vyas Sunil , Yeh J. Andrew , Luo Yuan
Published: November 2022

A multifocal confocal fluorescence microscopy system is designed and developed by incorporating photopolymer (PQ-PMMA) based volume holographic optical element in the illumination path for generating multifocal super Gaussian (SG) beam spots to reduce the scanning time.
Measurement and analysis of neuroblastoma cell death with holographic tomography
Authors: Huang Chung-Hsuan , Lai Yun-Ju , Tu Han-Yen , Cheng Chau-Jern
Published: November 2022

This study presents a label-free approach for measurement and analysis of cell death using holographic tomography. Based on different cell sets, the neuroblastoma cell death with starving and apoptosis are demonstrated in three-demonstrational tomographic images.
Single-pixel imaging by terahertz wave
Authors: Liu Jung-Ping , Tsai Kun-Chi , Chen Kun-Huang , Lin Yu-Chih
Published: November 2022

We applied a tera-hertz (THz) beam modulated by a diffuser to raster scan the object target. A complex intermediate pattern is synthesized using multiple raw patterns and then be demodulated by the pre-recorded system point spread function.
Full-Color Holographic Display with Enhanced Image Quality by Iterative Angular-Spectrum Method
Authors: He Zehao , Liu Kexuan , Sui Xiaomeng , Cao Liangcai
Published: November 2022

An iterative angular-spectrum method for phase-only holograms is presented. Convolution errors are considered and eliminated during the iteration. Full-color holographic reconstructions with an average promotion of 3.53 dB in peak signal-to-noise ratio are realized.
Dynamic metasurface holography
Authors: Rho Junsuk
Published: November 2022

The recent development of metasurfaces has enabled to make ultra-compact holographic displays and devices. In this talk, the design methodology, materials selection, multiplexing, dynamic modulation and conventional/practical fabrication for metasurfaces will be discussed in detail.
Perceptual Quality Assessment in Holographic Displays With a Semi-Supervised Neural Network
Authors: Eybposh M. Hossein , Moossavi Aram , Xu Jiayi , Caira Nicholas W. , Pégard Nicolas C.
Published: November 2022

Image quality assessment metrics do not reliably represent human perception of computer-generated holograms, limiting the performance of holographic displays. We developed a neural network with semi-supervised training that accurately predicts how viewers perceive hologram quality.
Advantages of Phase Modulating MEMS for Full 3D Hologram Scene Reconstruction
Authors: Wagner Tim , Leister Norbert , Sahm Hagen , Zozgornik Steffen , Teich Martin , Pleikies Johannes , Stolle Hagen
Published: November 2022

Phase LCOS are established for hologram reconstruction but also have drawbacks. MEMS can have superior modulation quality. An analysis of modulation errors and their impact on hologram reconstruction for full 3d holographic scenes is demonstrated.
Fresnel Incoherent Correlation Holography using Lucy-Richardson-Rosen Algorithm
Authors: Balasubramani Vinoth , Anand Vijayakumar , Reddy Andra Naresh Kumar , Rajeswary Aravind Simon John Francis , Magistretti Pierre J. , Depeursinge Christian , Juodkazis Saulius
Published: November 2022

Fresnel incoherent correlation holography (FINCH) is a super-resolution imaging method which requires at least three camera shots to image an object. In this study, we have demonstrated single-shot FINCH using a recently developed Lucy-Richardson-Rosen algorithm.