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Light advancement and delay by linear filters with close to zero resonant transmittance

Light advancement and delay by linear filters with close to zero resonant transmittance
Light advancement and delay by linear filters with close to zero resonant transmittance

Filters operated close to the critical coupling were reported to be capable of an increase and decrease of the group velocity. The published examples are ring resonators (feedback-based filter) and Mach-Zehnder filters (no feedback filters). Here we show that these linear filters have, within certain bandwidth, identical filtering characteristics, although they are based on completely different filtering principles. Further, we demonstrate experimentally a long period fiber grating as another no-feedback filter that is capable to perform similar filtering characteristics when operated close to the critical coupling condition. This scheme may be of interest due to inherently large bandwidth provided by long-period fiber grating based filters. In the example given here, filters compatible with systems operating at repetition rates up to 40 GHz are demonstrated.

Ooptical signal processing, Optical fiber devices, Optical filters, Slow wave structures
0733-8724
3708-3713
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Čtyroký, Jiří
1a8cfc78-d014-48d6-a2b5-b9764f7a859a
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Čtyroký, Jiří
1a8cfc78-d014-48d6-a2b5-b9764f7a859a

Slavík, Radan and Čtyroký, Jiří (2008) Light advancement and delay by linear filters with close to zero resonant transmittance. Journal of Lightwave Technology, 26 (23), 3708-3713. (doi:10.1109/JLT.2008.2004567).

Record type: Article

Abstract

Filters operated close to the critical coupling were reported to be capable of an increase and decrease of the group velocity. The published examples are ring resonators (feedback-based filter) and Mach-Zehnder filters (no feedback filters). Here we show that these linear filters have, within certain bandwidth, identical filtering characteristics, although they are based on completely different filtering principles. Further, we demonstrate experimentally a long period fiber grating as another no-feedback filter that is capable to perform similar filtering characteristics when operated close to the critical coupling condition. This scheme may be of interest due to inherently large bandwidth provided by long-period fiber grating based filters. In the example given here, filters compatible with systems operating at repetition rates up to 40 GHz are demonstrated.

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More information

Published date: 2008
Additional Information: Funding Information: Manuscript received April 14, 2008. Current version published January 28, 2009. This work was supported in part by the Grant Agency of AS CR under Contract B200670601 and by the Czech Science Foundation under Contract 102/07/0999. Copyright: Copyright 2009 Elsevier B.V., All rights reserved.
Keywords: Ooptical signal processing, Optical fiber devices, Optical filters, Slow wave structures

Identifiers

Local EPrints ID: 456654
URI: http://eprints.soton.ac.uk/id/eprint/456654
ISSN: 0733-8724
PURE UUID: 067fe209-c6ad-4df9-9f71-f6041cc29db8
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

Catalogue record

Date deposited: 05 May 2022 17:00
Last modified: 06 May 2022 01:41

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Contributors

Author: Radan Slavík ORCID iD
Author: Jiří Čtyroký

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