26 October 2009 Flat-top passband filter based on parallel-coupled double microring resonators in silicon
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Abstract
Optical filters with box-like response were designed and realized based on parallel-coupled double microrings in silicon-on-insulator. The properties of this design are simulated, considering the impact of the center-to-center distance of two rings, and coupling efficiency. Flat-top passband in the drop channel of the fabricated device was demonstrated with a 1dB bandwidth of 0.82nm, a 1dB/10dB bandwidth ratio of 0.51, an out of band rejection ratio of 14.6dB, as well as a free spectrum range of 13.6nm.
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Qingzhong Huang, Xi Xiao, Yuntao Li, Zhiyong Li, Yude Yu, Jinzhong Yu, "Flat-top passband filter based on parallel-coupled double microring resonators in silicon", Proc. SPIE 7516, Photonics and Optoelectronics Meetings (POEM) 2009: Optoelectronic Devices and Integration, 751607 (26 October 2009); doi: 10.1117/12.843401; https://doi.org/10.1117/12.843401
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