High performance fiber laser resonator for dual band (C and L) sensing

Sánchez González, Arturo; Pérez Herrera, Rosa Ana; Roldán Varona, Pablo; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sainz, Manuel

doi:10.1109/JLT.2022.3170124

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Identificadores

URI: http://hdl.handle.net/10902/25683

DOI: 10.1109/JLT.2022.3170124

ISSN: 0733-8724

ISSN: 1558-2213

Fecha

2022-08-01

Derechos

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publicado en

Journal of Lightwave Technology, 2022, 40(15), 5273-5279

Editorial

Institute of Electrical and Electronics Engineers Inc.

Enlace a la publicación

https://doi.org/10.1109/JLT.2022.3170124

Palabras clave

Artificially controlled backscattering reflectors

C-band

Erbium-doped fiber laser

L-band

Optical fiber sensor

Single-longitudinal mode

Resumen/Abstract

This work presents an experimental analysis and comparison of the performance of quasi-randomly distributed reflectors inscribed into a single-mode fiber as a sensing mirror both in C- and L-band. Single-wavelength emission has been obtained in either band when using these artificially controlled backscattering fiber reflectors in a ring-cavity fiber laser. Single-longitudinal mode operation with an optical signal to noise ratio (OSNR) of 47 dB and an output power instability as low as 0.04 dB have been measured when employing a C-band optical amplifier. When replaced by an L-band optical amplifier, a single-longitudinal mode behavior has also been obtained, showing an OSNR of 44 dB and an output power instability of 0.09 dB. Regarding their performance as fiber-laser sensing systems, very similar temperature and strain sensitivities have been obtained in both bands, comparable to fiber Bragg grating sensors in the case of temperature and one order of magnitude higher in the case of strain variations.