1995•Electronics LettersRequires access

Mutual injection locking of a fibre laser and aDFBsemiconductor laser

Lisa W. Liou, Mengjie Yu, Takayuki Yoshino, Govind P. Agrawal

Abstract

A fibre laser and a distributed feedback (DFB) laser are coupled through a 50:50 fibre coupler in such a way that the two lasers mutually injection-lock. The DFB laser forces the fibre laser to oscillate in a nearly single longitudinal mode. At the same time, the linewidth of the DFB laser is reduced to below 1.5 MHz because of mutual injection-locking.

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Available abstract

Key concepts: Laser linewidth, Distributed feedback laser, Laser, Materials science, Optics, Injection seeder, Semiconductor laser theory, Fiber laser