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Tunable coupling-induced resonance splitting in a self-coupled silicon ring cavity with robust spectral characteristics

Pandey, Awanish and Selvaraja, Shankar Kumar (2017) Tunable coupling-induced resonance splitting in a self-coupled silicon ring cavity with robust spectral characteristics. In: OPTICS LETTERS, 42 (14). pp. 2854-2857.

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Official URL: http://doi.org/10.1364/OL.42.002854

Abstract

We propose and demonstrate a self-coupled micro-ring resonator for resonance splitting by mutual mode coupling of a cavity mode and a counter-propagating mode in a siliconon-insulator platform. The resonator is constructed with a self-coupling region that can excite a counter-propagating mode. We experimentally study the effect of self-coupling on the resonance splitting, resonance extinction, and quality-factor evolution and stability. Based on the coupling, we achieve 72% of the free spectral range (FSR) splitting for a cavity with an FSR of 2.1 nm with <5% variation in the cavity quality factor. The self-coupled resonance splitting shows a highly robust spectral characteristic that can be exploited for sensing and optical signal processing. (C) 2017 Optical Society of America

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
Department/Centre: Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Depositing User: Id for Latest eprints
Date Deposited: 18 Aug 2017 05:46
Last Modified: 18 Aug 2017 05:46
URI: http://eprints.iisc.ac.in/id/eprint/57645

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