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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper WL1

Effect of distributed optical reflections on diode laser relative intensity noise

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Abstract

In many wideband systems which operate above 1 GHz the dominant noise component is the laser relative intensity noise (RIN). It is well known that the laser’s Intrinsic BIN can be degraded by optical reflections from components such as connectors, splices, and terminations in fiber-coupled systems.1 These components introduce discrete reflections which cause the fiber to behave as an external Fabry-Perot cavity, producing an intensity noise spectrum which is periodic in the frequency domain. Reflected energy due to Rayleigh scattering in long lengths of fiber can also cause significant degradation of laser RIN. Because Rayleigh scattering is distributed along the fiber, the noise spectrum exhibits no periodic structure and differs in other ways from that produced by a like amount of discrete reflection.

© 1989 Optical Society of America

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