Three-wavelength mode converter based on three-cascaded tilted sampled Bragg gratings

Xintao Zeng; Yuxin Ma; Ziming Hong; Hongji Wang; Pinghui Wu; Yuechun Shi; Xiangfei Chen

doi:10.1117/12.2620608

26 July 2022 Three-wavelength mode converter based on three-cascaded tilted sampled Bragg gratings

Xintao Zeng, Yuxin Ma, Ziming Hong, Hongji Wang, Pinghui Wu, Yuechun Shi, Xiangfei Chen

Proceedings Volume 12278, 2021 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing; 122780T (2022) https://doi.org/10.1117/12.2620608
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

By expanding the reconstruction-equivalent-chirp (REC) technique into two-Dimensional (2D) grating, we designed a three-wavelength mode converter with three-cascaded tilted sampled Bragg gratings (3C-TSBG). Theoretical simulation results show that the presented 3C-TSBG can realize three-wavelength conversion between the fundamental transverse electric mode (TE0) and the first-order transverse electric mode (TE1). In addition, the mode-conversion wavelength can be tuned by changing the period and tilted angle of the cascaded sampled gratings. More importantly, compared with the cascaded tilted Bragg gratings (C-TBG), the 3C-TSBG can improved the error tolerance and wavelength control accuracy. Therefore, the proposed 3C-TSBG has potential applications in reconfigurable mode-division-multiplexing communication systems and other areas where programmable mode conversion is required.

Citation Download Citation

Xintao Zeng, Yuxin Ma, Ziming Hong, Hongji Wang, Pinghui Wu, Yuechun Shi, and Xiangfei Chen "Three-wavelength mode converter based on three-cascaded tilted sampled Bragg gratings", Proc. SPIE 12278, 2021 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing, 122780T (26 July 2022); https://doi.org/10.1117/12.2620608

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KEYWORDS

Bragg gratings

Phase matching

Optical design

Waveguides

Finite-difference time-domain method

Refractive index

Silicon

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