Search query: anti resonant hollow fiber

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abstract: Laser spectroscopy outperforms electrochemical and semiconductor gas sensors in selectivity and environmental survivability. However, the performance of the state of the art laser sensors is still insufficient for many high precision applications. Here, we report mode phase difference photothermal spectroscopy with a dual mode anti resonant hollow core optical fiber and demonstrate all fiber gas (acetylene) detection down to ppt (parts per trillion) and <1% instability over a period of 3 hours. An anti resonant hollow core fiber could be designed to transmit light signals over a broad wavelength range from visible to infrared, covering molecular absorption lines of many important gases. This would enable multi component gas detection with a single sensing element and pave the way for ultra precision gas sensing for medical, environmental and industrial applications. Typically, the performance of the state of the art laser sensors is insufficient for many high precision applications. Here, the authors report mode phase difference photothermal spectroscopy with a dual mode anti resonant hollow core optical fiber and demonstrate acetylene detection with ultra high sensitivity.
author_names: Pengcheng Zhao

Yan Zhao

Haihong Bao

Hoi Lut Ho

Wei Jin

Shangchun Fan

Shoufei Gao

Yingying Wang

Pu Wang
title: Mode phase difference photothermal spectroscopy for gas detection with an anti resonant hollow core optical fiber
venue: Nature Communications
year: 2020

abstract: We report the fabrication and characterization of the first double clad tubular anti resonant hollow core fiber. It allows to deliver ultrashort pulses without temporal nor spectral distortions in the 700 1000 nm wavelength range and to efficiently collect scattered light in a high numerical aperture double clad. The output fiber mode is shaped with a silica microsphere generating a photonic nanojet, making it well suitable for nonlinear microendoscopy application. Additionally, we provide an open access software allowing to find optimal drawing parameters for the fabrication of tubular hollow core fibers.
author_names: Alexandre Kudlinski

Andy Cassez

Olivier Vanvincq

D Septier

A Pastre

Remi Habert

Karen Baudelle

Marc Douay

Vasyl Mytskaniuk

Victor Tsvirkun

Herve Rigneault

Geraud Bouwmans
title: Double clad tubular anti resonant hollow core fiber for nonlinear microendoscopy.
venue: Optics express
year: 2020

abstract: This dataset contains data supporting the results presented in the paper "Birefringent Anti resonant Hollow core Fiber" and the supplementary material. It includes the data used to plot each figure (in .xlsx format) together with simulated data obtained using COMSOL. Hollow core fibres have demonstrated record performance in applications such as high power pulse delivery, quantum computing, and sensing. However, their routine use is yet to become reality. A major obstacle is the ability to maintain the polarisation state of light over a broad range of wavelengths, while also ensuring single mode guidance and attenuation that is low enough for practical applications that require only a few meters of fibre length <1 dB/m) Here we simulated, fabricated and characterized a single mode birefringent anti resonant hollow core fibre. The birefringence was achieved by introducing capillary tubes of different thicknesses, thereby creating reduced symmetry in the structure. The measured group birefringence is in good agreement with the calculated group birefringence from simulations across the fibre guidance band within the telecommunications C band. At 1550 nm, we measured a group birefringence of 4.4E 5, which corresponds to a phase birefringence of 2.5E 5. The measured loss of the fibre was 0.46 dB/m at 1550 nm. The measured polarisation extinction ratio of the fibre at 1550 nm was 23.1 dB (25.7 dB) along the x (y polarisation axis, relating to an h parameter of 9.8E 4 (5.3E 4)
author_names: Stephanos Yerolatsitis

Riley Shurvinton

Peng Song

Ya-ping Zhang

Robert J A Francis-Jones

Kristina R Rusimova
title: Dataset for "Birefringent Anti resonant Hollow core Fiber"
year: 2020

abstract: Optimizing period of tooth spacing could improve the sensitivity in a microbend sensor based on multimode fiber. A new design of anti resonant hollow core fiber has experimentally further improved the microbending sensitivity. (c) 2020 The Author(s)
author_names: Donglai An

Xu Chen

Ying-ying Wang

Shoufei Gao

Xia Yu
title: High sensitivity microbend sensor based on anti resonant hollow core fiber
venue: 2020 Asia Communications and Photonics Conference (ACP) and International Conference on Information Photonics and Optical Communications (IPOC)
year: 2020

abstract: We demonstrate frequency down conversions of femtosecond pulses through dispersive wave generation and degenerate four wave mixing in a gas filled anti resonant hollow core fiber. These are achieved by exploiting the rapid variation of the dispersion in the fiber's transmission band edge. In this approach, the wavelength of the down shifted radiation is governed solely by the thickness of the dielectric wall at the core cladding interface, while other system parameters are accountable only for inducing sufficient nonlinear phase shifts. With the right choice of cladding wall thickness, the concept can be applied directly for generating high power mid infrared femtosecond pulses.
author_names: Trivikramarao Gavara

Md Imran Hasan

Muhammad Rosdi Abu Hassan

Ang Deng

Wonkeun Chang
title: Band edge mediated frequency down conversion in a gas filled anti resonant hollow core fiber.
venue: Optics letters
year: 2020

abstract: We report the generation of phase matched long wavelength radiation at a transmission band edge of an anti resonant hollow core fiber filled with gas. This is achieved with the aid of the resonance induced dispersion change at the band edge.
author_names: Trivikramarao Gavara

Muhammad Rosdi Abu Hassan

Ang Deng

Wonkeun Chang
title: Generation of Long Wavelength Radiation in Gas Filled Anti Resonant Hollow Core Fiber
year: 2020

abstract: Hollow core fibers have demonstrated record performance in applications such as high power pulse delivery, quantum computing, and sensing. However, their routine use is yet to become reality. A major obstacle is the ability to maintain the polarization state of light over a broad range of wavelengths, while also ensuring single mode guidance and attenuation that is low enough for practical applications that require only a few meters of fiber length <1 dB/m) Here we simulated, fabricated, and characterized a single mode birefringent anti resonant hollow core fiber. The birefringence was achieved by introducing capillary tubes of different thicknesses, thereby creating reduced symmetry in the structure. The measured group birefringence is in good agreement with the calculated group birefringence from simulations across the fiber guidance band within the telecommunications C band. At 1550 nm, we measured a group birefringence of 4.4 x 10 5, which corresponds to a phase birefringence of 2.5 x 10 5. The measured loss of the fiber was 0.46 dB/m at 1550 nm. The measured polarization extinction ratio of the fiber at 1550 nm was 23.1 dB (25.7 dB) along the x (y polarization axis, relating to an h parameter of 9.8 x 10 4 (5.3 x 10 4)
author_names: Stephanos Yerolatsitis

Riley Shurvinton

Peng Song

Ya-ping Zhang

Robert J A Francis-Jones

Kristina R Rusimova
title: Birefringent Anti Resonant Hollow Core Fiber
venue: Journal of Lightwave Technology
year: 2020

abstract: Transmission of dark hollow beams is crucial for blue detuned guiding of cold atoms, and it is fundamental for cold atom interferometers. We proposed four anti resonant hollow core fiber structures for transporting dark hollow beam, and then comparing their confinement loss. We chose the fiber structure with simpler structure and lower confinement loss to get fiber samples. Besides we built a fiber coupled system to test the fiber properties. The experimental results show that the fiber can better maintain the light intensity of the hollow beam, which are crucial for guiding atoms.
author_names: Xiaobin Xu

Di Zhao

Fuyu Gao

Yitong Song

He Xu
title: Transmission of a dark hollow beam by anti resonant hollow core fiber
year: 2020

abstract: In this paper we report a mid infrared sensor based on an anti resonant hollow core fiber. A quantum cascade laser operating around 4.53 um is used to target one of the strongest transition of nitrous oxide near 2203.7 cm 1. The system provides 1 second minimum detection limit at single parts per billion level using 3.2 m long fiber with the response time of less than 30 seconds. Presented sensing approach shows a good perspective for compact and sensitive mid infrared fiber based spectrometers.
author_names: Michal Nikodem

Grzegorz Gomolka

Mariusz Klimczak

Dariusz Pysz

Ryszard Buczynski
title: Demonstration of mid infrared gas sensing using an anti resonant hollow core fiber and a quantum cascade laser.
venue: Optics express
year: 2019

abstract: In this paper, we present a laser based sensing inside anti resonant hollow core fiber. A distributed feedback laser diode operating near 2004 nm and a 1.35 m long silica based fiber are used to demonstrate carbon dioxide detection with sensitivity down to ~5 ppmv. Gas exchange time as low as 5 seconds is obtained. This performance was achieved in a very simple optical configuration, without any mirrors or lenses in the setup.
author_names: Michal Nikodem

Grzegorz Gomolka

Mariusz Klimczak

Dariusz Pysz

Ryszard Buczynski
title: Laser absorption spectroscopy at 2 um inside revolver type anti resonant hollow core fiber.
venue: Optics express
year: 2019