Title :
Single-polarization operation of fiber distributed feedback (DFB) lasers by injection locking
Author :
Yamashita, Shinji ; Cowle, Gregory J.
Author_Institution :
Optoelectron. Res. Centre, Southampton Univ., UK
fDate :
3/1/1999 12:00:00 AM
Abstract :
This paper investigated injection locking characteristics of a fiber distributed feedback (DFB) laser operating in dual polarizations, and found that it could operate in a single polarization by injection locking. The locking bandwidth was less than 10 MHz, much narrower than DFB laser diodes as a consequence of longer cavity length and resulting longer photon lifetime. As a more practical method to realize single-polarization operation of the fiber DFB laser, we proposed self-injection locking with a polarization-selective optical feedback composed of a mirror and a polarizer, and demonstrated a stable single-polarization operation
Keywords :
distributed feedback lasers; fibre lasers; laser cavity resonators; laser mirrors; laser mode locking; laser stability; optical fibre polarisation; optical polarisers; 10 MHz; DFB fibre lasers; dual polarizations; fiber DFB laser; injection locking; injection locking characteristics; laser cavity length; locking bandwidth; mirror; photon lifetime; polarization-selective optical feedback; polarizer; self-injection locking; single polarization; single-polarization operation; stable single-polarization operation; Bandwidth; Diode lasers; Distributed feedback devices; Fiber lasers; Injection-locked oscillators; Laser feedback; Laser stability; Mirrors; Optical feedback; Optical fiber polarization;
Journal_Title :
Lightwave Technology, Journal of
