Open AccessSpontaneous pump depolarization in ultralong cavity Raman fiber laser amplifiers
Author(s) -
Giuseppe Rizzelli,
Pedro Corredera,
Juan Diego Ania-Castañón
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.027842
Subject(s) - optics , optical amplifier , materials science , laser , polarization (electrochemistry) , raman spectroscopy , amplified spontaneous emission , optoelectronics , depolarization , raman amplification , fiber laser , semiconductor laser theory , amplifier , raman scattering , physics , medicine , chemistry , cmos , endocrinology
We present an experimental demonstration of polarization-independent performance in a forward and backward-pumped 2nd-order ultralong cavity Raman laser amplifiers with highly polarized pumps. Our findings show that the depolarization of the Stokes component due to gain saturation leads to polarization-insensitive performance in terms of output gain and relative intensity noise in the signal. These results pave the way for the use of individual highly polarized low-RIN semiconductor laser diodes in Raman-amplified optical communications.