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Fabry-Perot resonators with transverse coupling on SOI using loop mirrors

Saber, Md Ghulam, Abadia, Nicolas, Wang, Yun and Plant, David V. 2018. Fabry-Perot resonators with transverse coupling on SOI using loop mirrors. Optics Communications 415 , pp. 121-126. 10.1016/j.optcom.2018.01.054

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Abstract

A novel integrated transversely coupled Fabry-Perot resonator using loop mirrors as the end reflectors are demonstrated via simulations and experiments on the silicon-on-insulator (SOI) platform. The resonator is formed by connecting two loop mirrors to the two output ports of a directional coupler to form the resonant cavity and utilizing the other two ports as the input and the output. Depending on which two ports of the directional coupler are mirrored, two configurations of the resonator can be achieved. The impacts of varying the cavity length and the coupling coefficient of the directional coupler on the output characteristics of the resonators are analyzed. A Q-factor of 28086 and an extinction ratio of 10.04 dB with an insertion loss of 1.9 dB is achieved experimentally for a 1038 μm cavity length and an extinction ratio of 18.14 dB and a Q-factor of 5120 with an insertion loss of 2.12 dB is obtained for a cavity length of 376 μm. The reported resonator offers additional freedom to tune the spectral characteristics.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Elsevier
ISSN: 0030-4018
Date of Acceptance: 23 January 2018
Last Modified: 22 Jul 2019 09:44
URI: http://orca.cf.ac.uk/id/eprint/117175

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