Accession Number : ADP008184

Title :   Low Frequency Relative Intensity Noise in Self-Pulsating Ridge-Waveguide Quantum Well Lasers,

Corporate Author : IBM CORP HOPEWELL JUNCTION NY EAST FISHKILL LABS

Personal Author(s) : Ovadia, Shlomo ; Lau, Kam Y.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : Self-pulsating (SP) semiconductor lasers are used in optical systems in which optical coherence is undesirable. In particular, their short coherence length (< 10 mm) minimizes their sensitivity to modal noise in a multimode fiber link. In comparison, conventional diode lasers with increasing optical feedback can fall into the coherence collapse regime, characterized by a wide emission spectrum and huge relative intensity noise (RIN) fluctuations. In this work, it is shown that predictions of the RIN of SP ridge-waveguide double quantum well graded-index separate confinement heterostructure (RW DQW-GRINSCH) lasers can be made based on a simple conjecture for a dynamically unstable system, and yield good agreement with experimental data.

Descriptors :   *SEMICONDUCTOR LASERS, *PULSED LASERS, COHERENCE, DIODES, EMISSION, EXPERIMENTAL DATA, FIBERS, MULTIMODE, NOISE, SENSITIVITY, WAVEGUIDES, LOW FREQUENCY.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE