Integrated Fabry-Perot cavities as a mechanism for enhancing micro-ring resonator performance
Abstract
We propose and experimentally demonstrate 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 utilizing 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 significantly improved. The device is theoretically analyzed, and practically fabricated on a silicon-on-insulator (SOI) wafer. Experimental results show that up to 11-times improvement in Q factor, together with 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 by the measured spectra of the fabricated devices with different structural parameters.
Keywords
Cite
@article{arxiv.1704.07946,
title = {Integrated Fabry-Perot cavities as a mechanism for enhancing micro-ring resonator performance},
author = {Jiayang Wu and Tania Moein and Xingyuan Xu and Guanghui Ren and Arnan Mitchell and David J. Moss},
journal= {arXiv preprint arXiv:1704.07946},
year = {2017}
}
Comments
9 pages, 6 figures, 33 References