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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 17,
  • Issue 3,
  • pp. 509-
  • (1999)

Single-Polarization Operation of Fiber Distributed Feedback (DFB) Lasers by Injection Locking

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Abstract

This paper investigated injection locking characteristics of a fiber distributed feedback (DFB) laser operating in dual polarizations, and found that it could operate in a single polarization by injection locking. The locking bandwidth was less than 10 MHz, much narrower than DFB laser diodes as a consequence of longer cavity length and resulting longer photon lifetime. As a more practical method to realize single-polarization operation of the fiber DFB laser, we proposed self-injection locking with a polarization-selective optical feedback composed of a mirror and a polarizer, and demonstrated a stable single-polarization operation.

[IEEE ]

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