Theory analysis of the optical mode localized sensing based on coupled ring resonators
Theory analysis of the optical mode localized sensing based on coupled ring resonators
Based on Mason's signal flow graph analysis, an analytical model of the optical mode localization based on coupled ring resonators is established. The correctness of the theoretical model is proved by simulation. High sensitivity and common-mode rejection can be achieved by evaluating the modal power ratio from resonant peaks as sensing output. Based on the four-port structure, two output spectrum with mode localization (asymmetric mode splitting) and symmetric mode splitting allows the high-sensitivity sensing and dual-channel calibration to be carried out simultaneously, which can reduce the sensing errors. Monte-Carlo analysis showed that fabrication imperfection changes less than 6% of the performance in 90% cases, thus the construction of practical sensors is possible with appropriate tuning. The optical mode localized sensing has advantages in sensitivity, accuracy, anti-aliasing compared with conventional micro-mechanical mode localized sensor. Various types of high-sensitive sensor can be constructed through coupling parametric perturbation with measurands in different physical domains.
32505-32522
Feng, Yu
631d9d39-ac55-4282-ab98-5b7d0dd2682e
Wang, Shumeng
c62f0be1-7b4f-4231-a94a-93ef9c9f69f1
Mashanovich, Goran
c806e262-af80-4836-b96f-319425060051
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
27 September 2021
Feng, Yu
631d9d39-ac55-4282-ab98-5b7d0dd2682e
Wang, Shumeng
c62f0be1-7b4f-4231-a94a-93ef9c9f69f1
Mashanovich, Goran
c806e262-af80-4836-b96f-319425060051
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
Feng, Yu, Wang, Shumeng, Mashanovich, Goran and Yan, Jize
(2021)
Theory analysis of the optical mode localized sensing based on coupled ring resonators.
Optics Express, 29 (20), .
(doi:10.1364/OE.434400).
Abstract
Based on Mason's signal flow graph analysis, an analytical model of the optical mode localization based on coupled ring resonators is established. The correctness of the theoretical model is proved by simulation. High sensitivity and common-mode rejection can be achieved by evaluating the modal power ratio from resonant peaks as sensing output. Based on the four-port structure, two output spectrum with mode localization (asymmetric mode splitting) and symmetric mode splitting allows the high-sensitivity sensing and dual-channel calibration to be carried out simultaneously, which can reduce the sensing errors. Monte-Carlo analysis showed that fabrication imperfection changes less than 6% of the performance in 90% cases, thus the construction of practical sensors is possible with appropriate tuning. The optical mode localized sensing has advantages in sensitivity, accuracy, anti-aliasing compared with conventional micro-mechanical mode localized sensor. Various types of high-sensitive sensor can be constructed through coupling parametric perturbation with measurands in different physical domains.
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Accepted/In Press date: 13 August 2021
Published date: 27 September 2021
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Funding Information:
Acknowledgments. The authors thank silicon photonics group for necessary guidance and assistance in the simulations. This work was supported by the Engineering and Physical Sciences Research Council under funding body EPSRC EP/V000624/1.
Publisher Copyright:
© 2021 OSA - The Optical Society. All rights reserved.
Identifiers
Local EPrints ID: 451836
URI: http://eprints.soton.ac.uk/id/eprint/451836
ISSN: 1094-4087
PURE UUID: 63d0cf2f-7758-462b-88e4-c496d66b3616
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Date deposited: 29 Oct 2021 16:34
Last modified: 17 Mar 2024 03:39
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Author:
Yu Feng
Author:
Shumeng Wang
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