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Design considerations in optical add/drop multiplexers based on grating-assisted null couplers

Design considerations in optical add/drop multiplexers based on grating-assisted null couplers
Design considerations in optical add/drop multiplexers based on grating-assisted null couplers
The performance of a fully optimized optical add/drop multiplexer (OADM), based on null couplers and tilted Bragg gratings, is studied in detail. It is shown that maximization of the device performance involves three main optimization steps. First, the waveguide asymmetry (V2 /V1 ratio) should be optimized in order to minimize the extinction ratio of the unwanted mode at the null coupler waist. Second, the coupler taper shape should he optimized in order to further minimize the aforementioned extinction ratio. Third, the grating tilt angle and relative width can be also optimized to give negligible backreflections at the input port and minimize radiation losses. The results show that the proposed high-performance OADM configuration can meet stringent telecom specifications.
0733-8724
92-104
Riziotis, C.
a2037f27-c711-46c3-bec4-2293fca6f0e0
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Riziotis, C.
a2037f27-c711-46c3-bec4-2293fca6f0e0
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701

Riziotis, C. and Zervas, M.N. (2001) Design considerations in optical add/drop multiplexers based on grating-assisted null couplers. IEEE Journal of Lightwave Technology, 19 (1), 92-104. (doi:10.1109/50.914490).

Record type: Article

Abstract

The performance of a fully optimized optical add/drop multiplexer (OADM), based on null couplers and tilted Bragg gratings, is studied in detail. It is shown that maximization of the device performance involves three main optimization steps. First, the waveguide asymmetry (V2 /V1 ratio) should be optimized in order to minimize the extinction ratio of the unwanted mode at the null coupler waist. Second, the coupler taper shape should he optimized in order to further minimize the aforementioned extinction ratio. Third, the grating tilt angle and relative width can be also optimized to give negligible backreflections at the input port and minimize radiation losses. The results show that the proposed high-performance OADM configuration can meet stringent telecom specifications.

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Published date: 2001
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 13730
URI: http://eprints.soton.ac.uk/id/eprint/13730
ISSN: 0733-8724
PURE UUID: 26c0b3c0-ceb8-45c8-a8cb-6c03e6638771
ORCID for M.N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

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Date deposited: 06 Jan 2005
Last modified: 28 Oct 2022 01:35

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Contributors

Author: C. Riziotis
Author: M.N. Zervas ORCID iD

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