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Threshold of a Symmetrically Pumped Distributed Feedback Fiber Laser With a Variable Phase Shift.

Authors :
Barmenkov, Yuri O.
Kir'yanov, Alexander V.
Pérez-Millán, Pere
Cruz, José Luis
Andrés, Miguel V.
Source :
IEEE Journal of Quantum Electronics. Aug2008, Vol. 44 Issue 8, p718-723. 6p. 1 Diagram, 6 Graphs.
Publication Year :
2008

Abstract

In this paper, we study, both theoretically and experimentally, the threshold characteristics of a distributed feedback fiber laser that depend on the value of a phase shift introduced into the fiber Bragg grating structure. We show that as the phase shift possesses a noticeable birefringence, the laser oscillates at any phase shift value. We also reveal that the laser threshold is different for the cavity eigen polarizations and depends on the phase shift value. We derive a simple analytical formula to calculate the laser threshold in the case of π phase shift; this formula can be utilized to estimate a minimal threshold value for the laser with certain active fiber and Bragg grating parameters. The developed theory allows us to fairly model the experimentally measured dependence of the laser threshold on induced phase shift value. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00189197
Volume :
44
Issue :
8
Database :
Academic Search Index
Journal :
IEEE Journal of Quantum Electronics
Publication Type :
Academic Journal
Accession number :
34043787
Full Text :
https://doi.org/10.1109/JQE.2008.923555