# O-Band Grating Couplers Using Silicon Nitride Structures
## 4 Conclusions
The optimized structural properties and design parameters contribute to high coupling efficiency, while the use of Si\({}_{3}\)N\({}_{4}\) waveguides in PICs provides superior optical properties. Thus, the new design can be superior compared to the classical Si GC for testing Si\({}_{3}\)N\({}_{4}\) photonic chips. From a system view, using our new design instead of the classical Si GC can improve the transceiver chip performances operating within the O-band spectrum. [PERSON] conceptualized the project. [PERSON] offered guidance and direction. [PERSON] devised the device's design. [PERSON] conducted simulations with the assistance of [PERSON]. [PERSON] authored the paper and response letter, and generated the figures. All authors have read and agreed to the published version of the manuscript. This research received no external funding. Institutional Review Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: The link provided below directs you to the article available on the HIT website within the library category: Article Link: [[[https://www.hit.ac.il/](https://www.hit.ac.il/)]([https://www.hit.ac.il/](https://www.hit.ac.il/))]. Conflicts of Interest: The authors declare no conflict of interest. References  
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