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Proceedings Paper

All-fiber tunable MMI fiber laser
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Paper Abstract

We report on a novel tuning mechanism to fabricate an all-fiber tunable laser based on multimode interference (MMI) effects. It is well known that the wavelength response of MMI devices exhibits a linear dependence when the length of the multimode fiber (MMF) section. Therefore, tuning in the MMI filter is achieved using a ferrule (capillary tube of 127 μm diameter) filled with a liquid with a higher refractive index than that of the ferrule, which creates a variable liquid MMF. This liquid MMF is used to increase the effective length of the MMI filter and tuning takes place. Using this simple scheme, a tuning range of 30 nm was easily achieved, with very small insertion losses. The filter was tested within a typical Erbium doped fiber (EDF) ring laser cavity, and a tunable EDF laser covering the full C-band was demonstrated. The advantage of our laser is of course the simplicity of the tunable MMI filter, which results in an inexpensive tunable fiber laser.

Paper Details

Date Published: 28 April 2009
PDF: 5 pages
Proc. SPIE 7339, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V, 73390Q (28 April 2009); doi: 10.1117/12.819078
Show Author Affiliations
J. E. Antonio-Lopez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
A. Castillo-Guzman, Univ. Autonoma de Nuevo Leon (Mexico)
D. A. May-Arrioja, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
R. Selvas-Aguilar, Univ. Autonoma de Nuevo Leon (Mexico)
P. LiKamWa, College of Optics & Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 7339:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications V
Michael J. Hayduk; Peter J. Delfyett; Andrew R. Pirich; Eric J. Donkor, Editor(s)

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