Optical 90° Hybrid Based on Cascaded Deformed MMI Couplers with Low Loss and High Balance

Xiangyang Dai, Jieru Zhao,Liyuan Song, Yudan Zhang,Qiaoyin Lu,John F. Donegan,Weihua Guo

2023 Conference on Lasers and Electro-Optics (CLEO)（2023）

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摘要

We present an optical 90° hybrid based on cascaded deformed multi-mode interference couplers. The fabricated hybrid demonstrated the common-mode rejection-ratio >25dB, excess-loss ~1dB, and phase deviation less than ±5° within the wavelength range over 45nm.

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