Paper
23 January 2023 Low-loss and high stability standard single mode fiber edge couplers for silicon photonics
Author Affiliations +
Proceedings Volume 12556, AOPC 2022: Optoelectronics and Nanophotonics; 125561A (2023) https://doi.org/10.1117/12.2652019
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China
Abstract
Efficient optical coupling between standard single mode fibers and nanophotonic waveguides has been recognized as a major practical challenge since the early years of photonics. In this work, a low-loss and wide band edge coupler based on subwavelength gratings (SWG) for standard single mode fibers is proposed and demonstrated on 220 nm SOI platform. The edge coupler has a minimum feature size of 130 nm and a 630-m length, which was fabricated in CUMEC’s 200 mm CMOS production facilities. The best coupling losses are 1.60 and 1.95 dB for TE and TMin1500-1600 nm wavelength range, respectively, achieving a minimum PDL of 0.2 dB at 1500 nm. Moreover, by taking advantage of SiN-on-Si integrated process and wafer bonding process, the edge coupler exhibits high process and package reliability, making it attractive for the commercial application.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bowen Li, Bojin Pan, Jiyao Yu, Yu Li, Guowei Cao, and Junbo Feng "Low-loss and high stability standard single mode fiber edge couplers for silicon photonics", Proc. SPIE 12556, AOPC 2022: Optoelectronics and Nanophotonics, 125561A (23 January 2023); https://doi.org/10.1117/12.2652019
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KEYWORDS
Silicon

Waveguides

Silicon photonics

Single mode fibers

Finite-difference time-domain method

Refractive index

Wafer bonding

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