24 October 2017 A tunable optical 90° hybrid composed of a 2×4 MMI, a 2×2MMI coupler, and a Heater pad
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Proceedings Volume 10460, AOPC 2017: Optoelectronics and Micro/Nano-Optics; 104600N (2017) https://doi.org/10.1117/12.2283509
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
A tunable optical 90° hybrid composed of a 2 × 4 multimode interference (MMI), a 2 × 2 MMI coupler and a heater pad is proposed, and a set of formulas was deduced for calculation the light intensity output of the device. The simulation has been performed, and the results show agreement with analytical predication. In the wavelength range of c band, the imbalances are below 0.04dB, the excess loss is less than 0.45 dB, and the phase deviations are below 3°. The fabrication tolerance of width as high as 0.3μm, which is larger than traditional optical 90° hybrid.
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Weihua Liu, Xiqu Chen, Chao Fan, "A tunable optical 90° hybrid composed of a 2×4 MMI, a 2×2MMI coupler, and a Heater pad", Proc. SPIE 10460, AOPC 2017: Optoelectronics and Micro/Nano-Optics, 104600N (24 October 2017); doi: 10.1117/12.2283509; https://doi.org/10.1117/12.2283509
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