Investigación experimental del espejo de lazo óptico no lineal con un acoplador simétrico y una placa retardadora de un cuarto de onda en el lazo

F. Gutiérrez-Zainos, B. Ibarra-Escamilla, E.A. Kuzin, U. Ruíz-Corona, O. Pottiez


We research experimentally the configuration of an non linear optical fiber loop mirror, with a symmetrical coupler, highly twisted low-birefringence fiber and a quarter-wave retarder plate inserted into the loop as polarization controller. The retarder plate is used to create an asymmetry in polarization and the nonlinear polarization rotation is used to produce a differential phase shift between the counter-propagating beams in the fiber loop. It is possible to change the transmission behavior with the rotation of the retarder plate. Some advantages that we get with this configuration, in comparison with others similar devices are high contrast between the maximun and minimun of the transmission and flexibility in the adjustment of its transmission characteristic curve. With this, we have the possibility to use it to reduce the amplitude fluctuations in a train of optical pulses.


Sagnac interferometer; nonlinear optics; fibrer-optic devices

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REVISTA MEXICANA DE FÍSICA, year 67, issue 1, January-February 2021. Bimonthly Journal published by Sociedad Mexicana de Física, A. C. Departamento de Física, 2º Piso, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, Alcaldía Coyacán, C.P. 04510 , Ciudad de México. Apartado Postal 70-348. Tel. (+52)55-5622-4946,, e-mail: Chief Editor: José Alejandro Ayala Mercado. INDAUTOR Certificate of Reserve: 04-2019-080216404400-203, ISSN: 2683-2224 (on line), 0035-001X (print), both granted by Instituto Nacional del Derecho de Autor. Responsible for the last update of this issue, Technical Staff of Sociedad Mexicana de Física, A. C., Fís. Efraín Garrido Román, 2º. Piso, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, Alcaldía Coyacán, C.P. 04510 , Ciudad de México. Date of last modification, January 4, 2021.

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