Electrical noise power spectrum behavior around threshold in DBR two- or three-section tunable lasers emitting around 1.55 µm

Mikhael Myara; Philippe Signoret; Jean-Philippe Tourrenc; Joel Jacquet; Bernard Pierre Orsal; Robert M. Alabedra

doi:10.1117/12.500091

16 May 2003 Electrical noise power spectrum behavior around threshold in DBR two- or three-section tunable lasers emitting around 1.55 μm

Mikhael Myara, Philippe Signoret, Jean-Philippe Tourrenc, Joel Jacquet, Bernard Pierre Orsal, Robert M. Alabedra

Author Affiliations +

Proceedings Volume 5111, Fluctuations and Noise in Photonics and Quantum Optics; (2003) https://doi.org/10.1117/12.500091
Event: SPIE's First International Symposium on Fluctuations and Noise, 2003, Santa Fe, New Mexico, United States

Abstract

Medium frequency (100kHz - 1MHz) measurements of electrical noise power spectrum densitiy in DBR tunable lasers show particular behaviour around threshold, compared to classical edge-emitting structures. In this paper, we consider structures in which tunability is made by current injection. Standard monomode (SMSR > 40 DB) non tunable DBR lasers Noise Level follow a global shot-noise tendancy, except around the laser threshold current level (called Ith). In these structures, a strong excess of noise is classically established at Ith. Next, at Ith+epsilon, the noise level goes down again to the shot noise level. In DBR tunable lasers, this behaviour is exactly the same, except that epsilon grows up when the current level in the Bragg section gets stronger. The aim of this paper is to establish a link between the 'epsilon' factor and the current level in the Bragg section.

Citation Download Citation

Mikhael Myara, Philippe Signoret, Jean-Philippe Tourrenc, Joel Jacquet, Bernard Pierre Orsal, and Robert M. Alabedra "Electrical noise power spectrum behavior around threshold in DBR two- or three-section tunable lasers emitting around 1.55 μm", Proc. SPIE 5111, Fluctuations and Noise in Photonics and Quantum Optics, (16 May 2003); https://doi.org/10.1117/12.500091

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