Fundamental Thermal Noise in Distributed Feedback Fiber Lasers

Author

Foster, Scott ; Tikhomirov, Alexei ; Milnes, Mark

Author_Institution

Maritime Operations Div., Defence Sci. & Technol. Organ., Edinburgh

Volume

43

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

378

Lastpage

384

Abstract

A detailed analysis of fundamental thermal frequency noise in distributed feedback fiber lasers (DFB FL) is presented. An expression relating the laser frequency noise spectrum to the spectrum of thermal (temperature) fluctuations in the fiber, accounting for the nontrivial DFB FL mode shape, is derived. A new expression for the thermal fluctuation spectrum of single-mode optical fiber is derived which predicts high-frequency thermal noise 3 dB higher than previously published results. Theoretical predictions are compared against experimental measurements for a well characterized DFB FL. Anomalous 1/f noise at low frequency is discussed

Keywords

1/f noise; distributed feedback lasers; fibre lasers; laser noise; thermal noise; 1/f noise; distributed feedback fiber lasers; fundamental thermal noise; thermal fluctuation; Distributed feedback devices; Fiber lasers; Fluctuations; Frequency; Laser feedback; Laser modes; Laser noise; Noise shaping; Optical fibers; Optical noise; Distributed feedback lasers; laser noise; optical fiber lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2007.894744

Filename

4142864