Common optical fibers are randomly birefringent, which results in random polarization of the supercontinuum (SC) generated in such fibers. Random polarization is undesirable for many applications of the SC. The formation of solitons from a pump pulse is one of the principal mechanisms of SC generation. Fiber twisting mitigates the random linear birefringence, which makes twisted fiber attractive for nonlinear applications. In this work we measured the polarization of solitons formed by the pulse breakup process. We found that a circularly polarized 1 ns pump pulse introduced to a twisted Corning SMF-28 fiber produces solitons with a high grade of circular polarization, while in a fiber without twist the polarization of solitons is random.
© 2014 Optical Society of America
Original Manuscript: October 24, 2013
Revised Manuscript: February 14, 2014
Manuscript Accepted: February 19, 2014
Published: March 18, 2014
Ariel Flores-Rosas, Josue I. Peralta-Hernandez, Yazmin E. Bracamontes-Rodríguez, Balder A. Villagomez-Bernabe, Georgina Beltrán-Pérez, Olivier Pottiez, Baldemar Ibarra-Escamilla, Roberto Rojas-Laguna, and Evgeny A. Kuzin, "Observation of a high grade of polarization of solitons generated in the process of pulse breakup in a twisted fiber," J. Opt. Soc. Am. B 31, 821-826 (2014)