Nonlinear optical bistability in microring resonators for enhanced phase sensing

Bibliographic Details
Title: Nonlinear optical bistability in microring resonators for enhanced phase sensing
Authors: Tritschler, Patrick, Schweikert, Christian, Klenk, Rouven H., Abdani, Simon, Sözen, Onur, Vogel, Wolfgang, Rademacher, Georg, Ohms, Torsten, Zimmermann, André, Degenfeld-Schonburg, Peter
Publication Year: 2024
Collection: Physics (Other)
Subject Terms: Physics - Optics, Physics - Applied Physics
More Details: Photonic microring resonators are used in a variety of chip-integrated sensing applications where they allow to measure transmission intensity changes upon external signals with a sensitivity that scales linearly with the Q-factor. In this work, we suggest to exploit the nonlinear self-phase-modulation effect to increase the overall sensitivity by an additional gain factor appearing when the operational point of the nonlinear resonator is chosen just at the cross-over from the mono- to the bistable regime. We present the theoretical idea together with a first proof of concept experiment displaying a gain factor of 22 on a chip-integrated silicon-nitride resonator.
Document Type: Working Paper
Access URL: http://arxiv.org/abs/2408.06247
Accession Number: edsarx.2408.06247
Database: arXiv
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