2003
DOI: 10.1117/12.497232
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Enhanced intensity fluctuations in a laser diode subject to optical feedback

Abstract: The relative intensity noise (RIN) of a semiconductor laser subject to partially coherent optical feedback has been studied both theoretically and experimentally. Good agreement between theory and experiment is obtained, but only if the optical feedback is considered to be partially coherent. At low bias currents there is an almost linear increase in the RIN with optical feedback strength, until stable external cavity operation is obtained. For higher bias currents the behaviour is similar to that of the coher… Show more

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“…5,6 As these two lasers are built from very different technologies, and their RIN are very different : first because the laser number "1" is wavelength stabilized by an FBG (Fiber Bragg Grating) which introduces an additive feedback , thus a noise excess. 7 Secondly, the laser number "2" has a rather chaotical behavior at high biasis, with noise peaks 4 decades higher than the nearest noise level. This is due to a guide dislocation in the cavity and it shows great interest for the amplifier noise study.…”
Section: Pump Lasers Noisementioning
confidence: 99%
“…5,6 As these two lasers are built from very different technologies, and their RIN are very different : first because the laser number "1" is wavelength stabilized by an FBG (Fiber Bragg Grating) which introduces an additive feedback , thus a noise excess. 7 Secondly, the laser number "2" has a rather chaotical behavior at high biasis, with noise peaks 4 decades higher than the nearest noise level. This is due to a guide dislocation in the cavity and it shows great interest for the amplifier noise study.…”
Section: Pump Lasers Noisementioning
confidence: 99%