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Modeling and experimental demonstration of ultracompact multiwavelength distributed Fabry-Pérot fiber Lasers

Modeling and experimental demonstration of ultracompact multiwavelength distributed Fabry-Pérot fiber Lasers
Modeling and experimental demonstration of ultracompact multiwavelength distributed Fabry-Pérot fiber Lasers

This paper presents a complete model for the design and optimization of multiwavelength distributed Fabry-Pérot (DFP) fiber lasers that are made by superimposing two chirped fiber Bragg gratings in a photosensitive codoped erbium-ytterbium (Er-Yb) fiber. The model is based on a matrix formulation of coupled-mode equations taking into account the chirped grating superstructure and including a spectrally resolved gain medium. The performed analysis reveals that the signal power of each channel is strongly localized near a minimum of the superstructured-grating envelope. As a consequence, the overlap between the power distributions in neighboring cavities is small, thus reducing the effect of cross-gain saturation and allowing a high number of channels in a short piece of fiber. The simulations also show how the saturation of the cross-relaxation mechanism between ytterbium and erbium leads to flat output spectra without the need for an additional equalization scheme such as a complex grating apodization profile. Furthermore, to validate the theoretical model, we present the experimental realization and characterization of a multiwavelength laser emitting in a single-mode and single-polarization over 16 wavelengths spaced by 50 GHz and with a total output power of 52 mW.

Distributed feedback lasers (DFB), Optical fiber Bragg gratings, Optical fiber lasers
0733-8724
44-53
Brochu, Guillaume
ff869d3a-928b-483b-90d3-0ed92013d9e1
LaRochelle, Sophie
6eb03bba-3246-4462-9544-90cecc52a9e4
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Brochu, Guillaume
ff869d3a-928b-483b-90d3-0ed92013d9e1
LaRochelle, Sophie
6eb03bba-3246-4462-9544-90cecc52a9e4
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d

Brochu, Guillaume, LaRochelle, Sophie and Slavík, Radan (2005) Modeling and experimental demonstration of ultracompact multiwavelength distributed Fabry-Pérot fiber Lasers. Journal of Lightwave Technology, 23 (1), 44-53. (doi:10.1109/JLT.2004.840345).

Record type: Article

Abstract

This paper presents a complete model for the design and optimization of multiwavelength distributed Fabry-Pérot (DFP) fiber lasers that are made by superimposing two chirped fiber Bragg gratings in a photosensitive codoped erbium-ytterbium (Er-Yb) fiber. The model is based on a matrix formulation of coupled-mode equations taking into account the chirped grating superstructure and including a spectrally resolved gain medium. The performed analysis reveals that the signal power of each channel is strongly localized near a minimum of the superstructured-grating envelope. As a consequence, the overlap between the power distributions in neighboring cavities is small, thus reducing the effect of cross-gain saturation and allowing a high number of channels in a short piece of fiber. The simulations also show how the saturation of the cross-relaxation mechanism between ytterbium and erbium leads to flat output spectra without the need for an additional equalization scheme such as a complex grating apodization profile. Furthermore, to validate the theoretical model, we present the experimental realization and characterization of a multiwavelength laser emitting in a single-mode and single-polarization over 16 wavelengths spaced by 50 GHz and with a total output power of 52 mW.

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More information

Published date: January 2005
Additional Information: This work was supported in part by the Quebec Government, the Canada Research Chair Program, and TeraXion Inc.
Keywords: Distributed feedback lasers (DFB), Optical fiber Bragg gratings, Optical fiber lasers

Identifiers

Local EPrints ID: 456630
URI: http://eprints.soton.ac.uk/id/eprint/456630
ISSN: 0733-8724
PURE UUID: 345e825b-cff4-4790-8626-5457e6f29bd0
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

Catalogue record

Date deposited: 05 May 2022 16:59
Last modified: 06 May 2022 01:41

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Contributors

Author: Guillaume Brochu
Author: Sophie LaRochelle
Author: Radan Slavík ORCID iD

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