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

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 Modulati...

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Bibliographic Details
Published in:Journal of lightwave technology 2008-03, Vol.26 (5), p.588-599
Main Authors: Pezeshki, J., Saylors, M., Mandelberg, H., Goldhar, J.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Distributed feedback lasers
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fabry-Perot
Fundamental areas of phenomenology (including applications)
homodyne detection
Information, signal and communications theory
Injection locking
Injection-locked oscillators
Integrated optics. Optical fibers and wave guides
Laser stability
Lasers
Local oscillators
Modulation
Modulation, demodulation
Monitoring
Monitors
Optical and optoelectronic circuits
optical fiber communication
Optical fiber communications
Optical modulation
Optical receivers
Optical telecommunications
Optics
Oscillators
Physics
Receivers
Repeaters
semiconductor laser
Semiconductor lasers
Semiconductor lasers
laser diodes
Signal and communications theory
Signal generators
Stabilization
Telecommunications
Telecommunications and information theory
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Description
Summary: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.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2007.912528