On-line monitor of the mode/polarization-division multiplexed channels on the silicon chip

Yong Liu; Tingge Dai; Yuehai Wang; Jianyi Yang

doi:10.1117/12.2686938

6 August 2023 On-line monitor of the mode/polarization-division multiplexed channels on the silicon chip

Yong Liu, Tingge Dai, Yuehai Wang, Jianyi Yang

Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 127812R (2023) https://doi.org/10.1117/12.2686938
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China

Abstract

We propose a novel silicon on-line monitor of orthogonal modes/polarization, which consists of a Polarization Rotator (PR) and two location-specified photodiodes. The PR converts two polarization states to TE₀ and TE₁ state, which has different field distributions. Two photodiodes located in the different places on the waveguide are designed to analyze the modes. The experiment reveals that the p-n junctions which are located in the different places on the waveguide show different photo responsivity of both the TE₀ and TE₁ modes, because the responsivity is sensitive to optical power density around the depletion area. The power consumptions of both two modes are analyzed by the two sets of orthogonal photocurrent signals acquired from two location-specified photodiodes. The result matches well with the theory. The mode/polarization detector can also be expanded when more orthogonality states and more photodiodes are induced.

Citation Download Citation

Yong Liu, Tingge Dai, Yuehai Wang, and Jianyi Yang "On-line monitor of the mode/polarization-division multiplexed channels on the silicon chip", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 127812R (6 August 2023); https://doi.org/10.1117/12.2686938

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