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Investigations of repetition rate stability of a mode-locked quantum dot semiconductor laser in an auxiliary optical fiber cavity

Author: Breuer, S. · Elsäßer, W. · McLnerney, J.G. · Yvind, K. · Pozo Torres, J.M. · Bente, E.A.J.M. · Yousefi, M. · Villafranca, A. · Vogiatzis, N. · Rorison, J.
Type:article
Date:2010
Institution: TNO Industrie en Techniek
Source:IEEE Journal of Quantum Electronics, 2, 46, 150-157
Identifier: 275961
Keywords: Electronics · Laser absorbers · Laser resonators · Laser stability · Semiconductor lasers · Industrial Innovation · Physics & Electronics · NI - Nano Instrumentation · TS - Technical Sciences

Abstract

We have investigated experimentally the pulse train (mode beating) stability of a monolithic mode-locked multi-section quantum-dot laser with an added passive auxiliary optical fiber cavity. Addition of the weakly coupled (∼ - 24 dB) cavity reduces the current-induced shift dv / dl of the principal peak in the RF spectrum (the effective pulse repetition frequency) by more than an order of magnitude, from -39.5 to - 2.3 kHz/mA. The rms timing jitter of the pulse train is simultaneously reduced from 1.4 to 0.9 ps. © 2009 IEEE.