26 February 2018 In-fiber modal interferometer based on multimode and double cladding fiber segments for tunable fiber laser applications
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Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 105122R (2018) https://doi.org/10.1117/12.2288460
Event: SPIE LASE, 2018, San Francisco, California, United States
Abstract
We report an in-fiber structure based on the use of a multimode fiber segment and a double cladding fiber segment, and its application as spectral filter in an erbium-doped fiber laser for selection and tuning of the laser line wavelength. The output transmission of the proposed device exhibit spectrum modulation of the input signal with free spectral range of ~21 nm and maximum visibility enhanced to more than ~20 dB. The output spectrum of the in-fiber filter is wavelength displaced by bending application which allows a wavelength tuning of the generated laser line in a range of ~12 nm. The use of the proposed in-fiber structure is demonstrated as a reliable, simple, and low-cost wavelength filter for tunable fiber lasers design and optical instrumentation applications.
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P. Prieto-Cortés, R. I. Álvarez-Tamayo, M. Durán-Sánchez, A. Castillo-Guzmán, G. Salceda-Delgado, B. Ibarra-Escamilla, E. A. Kuzin, A. Barcelata-Pinzón, R. Selvas-Aguilar, "In-fiber modal interferometer based on multimode and double cladding fiber segments for tunable fiber laser applications", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105122R (26 February 2018); doi: 10.1117/12.2288460; https://doi.org/10.1117/12.2288460
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