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Generation of a CW Local Oscillator Signal Using a Stabilized Injection Locked Semiconductor Laser

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4 Author(s)
Pezeshki, J. ; Univ. of Maryland, College Park ; Saylors, M. ; Mandelberg, H. ; Goldhar, J.

We explore the technique of injection locking a semiconductor laser with a portion of the received optical signal to regenerate a local oscillator for eventual use with a homodyne receiver. In addition, we show that the injection locking process can be electronically stabilized by using the Modulation Transfer Ratio (MTR) of the slave laser as a monitor, given either a DFB or Fabry-Perot slave laser. We show that this stabilization technique maintains injection lock (given a locking range of ~1 GHz) for laser drift much greater than what is expected in a typical transmission system. In addition, we explore the quality of the output of the slave laser, and analyze its suitability as a local oscillator signal for a homodyne receiver.

Published in:

Lightwave Technology, Journal of  (Volume:26 ,  Issue: 5 )

Date of Publication:

March1, 2008

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