Title :
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
fDate :
5/1/2007 12:00:00 AM
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;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2007.894744
