Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 40, Issue 16, Pages 5654-5659Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2022.3178963
Keywords
Couplings; Couplers; Reflection; Gratings; Optical fiber couplers; Fiber gratings; Diffraction gratings; Grating coupler; integrated photonics; multi-core fiber; silicon photonics; vertical coupling
Funding
- National Research and Development Program [2018YFB2200200]
- National Natural Science Foundation of China [62135012, 62105107]
- Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang [2021R01001]
- Guangdong Basic and Applied Basic Research Foundation [2021A1515012215]
- Fundamental Research Funds for the Central Universities [2021QNA5001]
Ask authors/readers for more resources
The study presents and demonstrates a high-performance grating coupler array for coupling a silicon photonic chip to a multi-core fiber vertically, with low coupling loss, low back reflection, low channel non-uniformity, and effective crosstalk. These improved results are attributed to the design of embedding the diffractive grating in a one-port cavity formed by reflecting Bragg gratings and a metal mirror.
High performance grating coupler array for coupling of a silicon photonic chip to a multi-core fiber mounted perfectly vertical to the chip surface is proposed and demonstrated. Experimental results show a low coupling loss of -0.8 dB with 1-dB bandwidth of 47 nm, a low back reflection of <-15.8 dB in about 40 nm wavelength range, a channel non-uniformity of 0.9 dB, and crosstalk of <-40 dB. These improved results attribute to the design of embedding the diffractive grating in a one-port cavity formed by partially and perfectly reflecting Bragg gratings on the silicon chip and a metal mirror on the chip surface.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
