A flat-top steep-edge waveguide photodetector composed of cascaded silicon microring resonators

Jinhua Hu; Yongqing Huang; Xiaofeng Duan; Xinye Fan; Fuquan Hu; Luo Yang; Bing Shen; Qi Wang; Xia Zhang; Xiao-Min Ren

doi:10.1117/12.999483

27 November 2012 A flat-top steep-edge waveguide photodetector composed of cascaded silicon microring resonators

Jinhua Hu, Yongqing Huang, Xiaofeng Duan, Xinye Fan, Fuquan Hu, Luo Yang, Bing Shen, Qi Wang, Xia Zhang, Xiao-Min Ren

Proceedings Volume 8555, Optoelectronic Devices and Integration IV; 85550X (2012) https://doi.org/10.1117/12.999483
Event: Photonics Asia, 2012, Beijing, China

Abstract

In this paper, we proposed a novel photodetector composed of cascaded microring resonators on silicon-on-insulator. In order to enhance the tolerance of signal wavelength drifting in optical communication, the photodetector was designed with a flat-top steep-edge response. In the photodetector, we used polarization insensitive cascaded silicon microring resonators as optical filter cavity, and used a silicon racetrack resonator bonded in p-i-n chip as optical detecting cavity. We used finite element (FE) mode solver, finite different time domain (FDTD), and transfer matrix method (TMM) to simulate the behavior of the polarization insensitive optical filter. With optimized parameters, the photodetector showed high quantum efficiency, narrow line width, and flat-top steep-edge.

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Jinhua Hu, Yongqing Huang, Xiaofeng Duan, Xinye Fan, Fuquan Hu, Luo Yang, Bing Shen, Qi Wang, Xia Zhang, and Xiao-Min Ren "A flat-top steep-edge waveguide photodetector composed of cascaded silicon microring resonators", Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 85550X (27 November 2012); https://doi.org/10.1117/12.999483

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