Research On Linewidth Characteristics And Broadening Mechanism Of Distributed Feedback Fiber Laser
ACTA PHYSICA SINICA(2012)
Abstract
The linewidth characteristics of distributed feedback fiber laser (DFB-FL) is fully explored in this paper. The linewidth broadening effect of DFB-FL induced by self-pulsation, phase-shifted grating, especially lasing window, external disturbance, etc. are extensivly investigated in the paper based on the theoretical derivation and experiment. An effective linewidth compression method is proposed, and a self-injection system of DFB-FL comes up to reduce its linewidth from 35 kHz to less than 10 kHz.
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Key words
distributed feedback fiber laser,self-injection mode-locking,linewidth characteristics
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