J. Eur. Opt. Soc.-Rapid Publ.
Volume 12, Number 1, 2016
|Number of page(s)||5|
|Published online||04 November 2016|
MMI filters configuration for dual-wavelength generation in a ring cavity erbium-doped fibre laser
Optics Department, Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis Enrique Erro 1, 72824, Puebla, Mexico
2 CONACyT Research Fellow - Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis Enrique Erro 1, 72824, Puebla, Mexico
3 CREOL, The College of Optics and Photonics, University of Central Florida, 32816-2700, Orlando, FL, USA
Accepted: 27 October 2016
Background: Dual wavelength laser generation has been of constant interest due to their applications in optical communications and teraheartz generation. A novel configuration for Dual-wavelength laser generation based on the use of a couple of multimode interference (MMI) filters is demonstrated in a ring cavity Erbium-doped fibre laser.
Methods: The MMI filters consist of a segment of no-core fibre spliced between two SMF-28 single mode fibre segments. The MMI filters configured as a Mach-Zehnder interferometer, are used as transmission spectral filters for simultaneous generation of two laser wavelengths. An optical attenuator is used to adjust the intra-cavity losses for dual-wavelength laser generation.
Results: Laser emission at 1540.4 and 1554 nm for a wavelength separation of ~13.6 nm is obtained. The laser wavelengths output power stability variations with the applied pump power is also experimentally discussed.
Conclusions: The use of MMI filters in the proposed dual-wavelength laser filter is experimentally demonstrated as a reliable device for dual-wavelength generation in fibre lasers.
Key words: Fibre lasers / Multimode interference filter / Dual-wavelength laser / Erbium-doped fibre
© The Author(s) 2016
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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