2 January 2018 Spectrum reshaping of micro-ring resonator via an integrated Fabry-Perot cavity
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We investigate the enhancement in the filtering quality (Q) factor of an integrated micro-ring resonator (MRR) by embedding it in an integrated Fabry-Perot (FP) cavity formed by cascaded Sagnac loop reflectors (SLRs). By using coherent interference within the FP cavity to reshape the transmission spectrum of the MRR, both the Q factor and the extinction ratio (ER) can be greatly improved. The device is theoretically analyzed, and practically fabricated on a silicon-on-insulator (SOI) platform. Experimental results show that up to 11-times improvement in Q factor and an 8-dB increase in ER can be achieved via our proposed method. The impact of varying structural parameters on the device performance is also investigated and verified.
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Jiayang Wu, Jiayang Wu, Tania Moein, Tania Moein, Xingyuan Xu, Xingyuan Xu, Guanghui Ren, Guanghui Ren, Arnan Mitchell, Arnan Mitchell, David J. Moss, David J. Moss, } "Spectrum reshaping of micro-ring resonator via an integrated Fabry-Perot cavity", Proc. SPIE 10456, Nanophotonics Australasia 2017, 104560Q (2 January 2018); doi: 10.1117/12.2282641; https://doi.org/10.1117/12.2282641

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