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Appl. Sci. 2018, 8(8), 1337;

Erbium Ring Fiber Laser Cavity Based on Tip Modal Interferometer and Its Tunable Multi-Wavelength Response for Refractive Index and Temperature

Departamento de Electrónica, División de Ingenierías Campus Irapuato-Salamanca, Universidad de Guanajuato, Carretera Salamanca-Valle de Santiago km 3.5 + 1.8 km, Salamanca Gto. 36885, Mexico
Departamento de Física, Facultad de Ciencias Básicas, Universidad Autónoma de Occidente, Calle 25 # 115-85, Cali 760030, Colombia
Departamento de Tecnologías de la Información y Comunicación, Universidad Tecnológica de Salamanca, Avenida Universidad Tecnológica 200, Ciudad Bajío, Salamanca Gto. 36766, Mexico
Catedrático CONACYT, Consejo Nacional de Ciencia y Tecnología (CONACYT), Av. Insurgentes Sur No. 1582, Col. Crédito Constructor, Del. Benito Juárez C.P. 039040, México
Author to whom correspondence should be addressed.
Received: 29 June 2018 / Revised: 24 July 2018 / Accepted: 7 August 2018 / Published: 10 August 2018
(This article belongs to the Section Optics and Lasers)
PDF [3048 KB, uploaded 10 August 2018]


A tunable multi-wavelength fiber laser is proposed and demonstrated based on two main elements: an erbium-doped fiber ring cavity and compact intermodal fiber structure. The modal fiber interferometer is fabricated using the cost-effective arc splice technique between conventional single-mode fiber and microfiber. This optical fiber structure acts as a wavelength filter, operated in reflection mode. When the refractive index and temperature variations are applied over the fiber filter, the ring laser cavity provides several quad-wavelength laser spectra. The multi-wavelength spectra are tuned into the C-band with a resolution of 0.05 nm. In addition, the spectra are symmetric with minimal power difference between the lasing modes involved, and the average of the side mode suppression ratio is close to 37 dB. This laser offers low-cost implementation, low wavelength drift, and high power stability, as well as an effect of easy controllability regarding tuned multi-wavelength. View Full-Text
Keywords: fiber laser; ring laser cavity; tunable multi-wavelength laser fiber laser; ring laser cavity; tunable multi-wavelength laser

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Lopez-Dieguez, Y.; Estudillo-Ayala, J.M.; Jauregui-Vazquez, D.; Herrera-Piad, L.A.; Sierra-Hernandez, J.M.; Garcia-Mina, D.F.; Gallegos-Arellano, E.; Hernandez-Garcia, J.C.; Rojas-Laguna, R. Erbium Ring Fiber Laser Cavity Based on Tip Modal Interferometer and Its Tunable Multi-Wavelength Response for Refractive Index and Temperature. Appl. Sci. 2018, 8, 1337.

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