16 May 2003 Correlation between tuning section electrical noise and optical amplitude fluctuations in DBR two- and three-section tunable lasers emitting around 1.55 μm
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Proceedings Volume 5111, Fluctuations and Noise in Photonics and Quantum Optics; (2003) https://doi.org/10.1117/12.500080
Event: SPIE's First International Symposium on Fluctuations and Noise, 2003, Santa Fe, New Mexico, United States
Abstract
Most common monomode tunable laser diodes use carriers injection to change a bulky semi-conductor material's optical index (through absorption), with the aim of switching the emission wavelength, thanks to the phasis comb spectrum or Bragg filtering evolution. This index change existe in the active, phase and Bragg section. Independently, current injection in a laser diode involves the existance of a fundamental shot noise and of excess 1/f noise. This noise power creates optical index fluctuations in all of the 3 sections, and so modulates the laser's light field. As there is a close link between absorption and refraction index in semiconductors, through Kramers-Kronig relationships this modulation has an influence on both phase and amplitude of the laser field. The aim of this paper is to establish the correlations existing between electrical shot noise and 1/f noise of the tuning sections and the laser field's optical noise.
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Mikhael Myara, Philippe Signoret, Jean-Philippe Tourrenc, Joel Jacquet, Bernard Pierre Orsal, Robert M. Alabedra, "Correlation between tuning section electrical noise and optical amplitude fluctuations in DBR two- and three-section tunable lasers emitting around 1.55 μm", Proc. SPIE 5111, Fluctuations and Noise in Photonics and Quantum Optics, (16 May 2003); doi: 10.1117/12.500080; https://doi.org/10.1117/12.500080
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