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18 June 2014 Laser line wavelength sensor based in a dual-wavelength fiber laser with a Hi-Bi loop Sagnac interferometer
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Abstract
We present an experimental method for straight forward dual wavelength Erbium doped fiber linear cavity laser characterization based in laser line spectrum behavior due to the Hi-Bi FOLM transmission spectrum wavelength displacement by temperature variations in the fiber loop. The laser operation is for a single and dual mode, obtained through the adjustment of the cavity losses by the Sagnac interferometer spectrum wavelength displacement due to the temperature variation of the fiber loop. The method allow determine the laser operation from a single emission line and a two emission lines simultaneously through the Sagnac transmittance spectrum optical power variations measurement due to wavelength spectrum shifting for each laser wavelength generated separately and overlapping these obtained spectrums.
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M. Durán Sánchez, R. I. Álvarez Tamayo, O. Pottiez, E. A. Kuzin, B. Ibarra-Escamilla, A. González-García, and A. Barcelata Pinzón "Laser line wavelength sensor based in a dual-wavelength fiber laser with a Hi-Bi loop Sagnac interferometer", Proc. SPIE 9098, Fiber Optic Sensors and Applications XI, 909816 (18 June 2014); https://doi.org/10.1117/12.2050742
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