Design of multi-wavelength demultiplexing coupler based on DBS algorithm

Yutai Chen; Junbo Yang

doi:10.1117/12.2654956

15 December 2022 Design of multi-wavelength demultiplexing coupler based on DBS algorithm

Yutai Chen, Junbo Yang

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 124784I (2022) https://doi.org/10.1117/12.2654956
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

The optical coupler can couple the light from the fiber into the waveguide, and the wavelength demultiplexer can split light into different wavelengths. Both devices play a very important role in optical chips, and combing them together can further reduce the chip footprint and improve the operating efficiency. In this work, based on the direct-binary-search (DBS) inverse design algorithm, we design two metamaterial couplers that can realize multi-wavelength demultiplexing. The two devices are based on silicon on insulator (SOI) and cover an ultra-compact footprint of 3.6 μm × 3.6 μm. The first device can couple and split 1310 nm and 1550 nm light into two separate waveguides with the coupling efficiencies of 0.26 and 0.27, respectively. The second device can couple and split 1310 nm ,1490 nm and 1550 nm light into three separate waveguides with the coupling efficiencies of 0.25, 0.2 and 0.23，respectively. The large number of guide-mode resonances in the device leads to this effect. The two couplers, especially for the three-wavelength demultiplexing coupler, can be used as splitter for monolithically silicon integrated transceivers at the main optical fiber communication wavelength of 1310 nm, 1490 nm and 1550 nm, which potentially meets the low-cost and ultra-compact requirements for future passive optical networks.

Citation Download Citation

Yutai Chen and Junbo Yang "Design of multi-wavelength demultiplexing coupler based on DBS algorithm", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 124784I (15 December 2022); https://doi.org/10.1117/12.2654956

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