Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering

We look into the use of the intracavity backscattering in twin-coupled traveling wave microresonators (TWMRs) to generate enhanced coupled-resonator-induced transparency (CRIT) and optical Fano resonance (OFR). Intracavity backscattering makes it possible to either generate a single CR...

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Main Authors: Ang, Thomas Y. L., Ngo, Nam Quoc
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2012
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Online Access:https://hdl.handle.net/10356/94695
http://hdl.handle.net/10220/7974
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-946952020-03-07T13:57:30Z Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering Ang, Thomas Y. L. Ngo, Nam Quoc School of Electrical and Electronic Engineering Photonics Research Centre DRNTU::Engineering We look into the use of the intracavity backscattering in twin-coupled traveling wave microresonators (TWMRs) to generate enhanced coupled-resonator-induced transparency (CRIT) and optical Fano resonance (OFR). Intracavity backscattering makes it possible to either generate a single CRIT peak or a pair of CRIT peaks within one free spectral range in the transmission spectrum. The distance between the twin-CRIT peaks can be tuned by controlling the intracavity backscattering strength. Also, the use of intracavity backscattering allows the simultaneous production of both fast and slow light effects. In addition, it is found that the symmetric CRIT peaks can be reshaped into asymmetric OFR line shapes either by using TWMRs with different intracavity backscattering strengths when one input is launched into the circuit or by modulating the phase/amplitude difference between the dual contrapropagating inputs, which are launched into the circuit in the presence of intracavity backscattering. These allow switching between CRIT and OFR to be realized in the absence of gain or phase tuning elements in the cavities, unlike conventional twin-coupled TWMR systems. Published version 2012-05-15T08:04:33Z 2019-12-06T19:00:31Z 2012-05-15T08:04:33Z 2019-12-06T19:00:31Z 2012 2012 Journal Article Ang, T. Y. L. & Ngo, N. Q. (2012). Enhanced coupled-resonator-induced transparency and optical Fano resonance via intracavity backscattering. Journal of the Optical Society of America B, 29(5), 1094-1103. https://hdl.handle.net/10356/94695 http://hdl.handle.net/10220/7974 10.1364/JOSAB.29.001094 en Journal of the optical society of America B © 2012 Optical Society of America. This paper was published in Journal of the Optical Society of America B and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following DOI: [http://dx.doi.org/10.1364/JOSAB.29.001094].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 10 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Ang, Thomas Y. L.
Ngo, Nam Quoc
Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
description We look into the use of the intracavity backscattering in twin-coupled traveling wave microresonators (TWMRs) to generate enhanced coupled-resonator-induced transparency (CRIT) and optical Fano resonance (OFR). Intracavity backscattering makes it possible to either generate a single CRIT peak or a pair of CRIT peaks within one free spectral range in the transmission spectrum. The distance between the twin-CRIT peaks can be tuned by controlling the intracavity backscattering strength. Also, the use of intracavity backscattering allows the simultaneous production of both fast and slow light effects. In addition, it is found that the symmetric CRIT peaks can be reshaped into asymmetric OFR line shapes either by using TWMRs with different intracavity backscattering strengths when one input is launched into the circuit or by modulating the phase/amplitude difference between the dual contrapropagating inputs, which are launched into the circuit in the presence of intracavity backscattering. These allow switching between CRIT and OFR to be realized in the absence of gain or phase tuning elements in the cavities, unlike conventional twin-coupled TWMR systems.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Ang, Thomas Y. L.
Ngo, Nam Quoc
format Article
author Ang, Thomas Y. L.
Ngo, Nam Quoc
author_sort Ang, Thomas Y. L.
title Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
title_short Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
title_full Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
title_fullStr Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
title_full_unstemmed Enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
title_sort enhanced coupled-resonator-induced transparency and optical fano resonance via intracavity backscattering
publishDate 2012
url https://hdl.handle.net/10356/94695
http://hdl.handle.net/10220/7974
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