Open AccessHigh speed cross-amplitude modulation in concatenated SOA-EAM-SOA
Author(s) -
C. S. Cleary,
Robert Manning
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.014338
Subject(s) - impulse response , amplitude modulation , amplitude , optics , modulation (music) , impulse (physics) , wavelength , amplified spontaneous emission , phase modulation , physics , signal (programming language) , materials science , frequency modulation , laser , radio frequency , telecommunications , acoustics , computer science , phase noise , mathematical analysis , mathematics , quantum mechanics , programming language
We observe a near-ideal high speed amplitude impulse response in an SOA-EAM-SOA configuration under optimum conditions. Full amplitude recovery times as low as 10 ps with modulation depths of 70% were observed in pump-probe measurements. System behavior could be controlled by the choice of signal wavelength, SOA current biases and EAM reverse bias voltages. Experimental data and impulse response modelling indicated that the slow tail in the gain response of first SOA was negated by a combination of cross-absorption modulation between pump and modulated CW probe, and self-gain modulation of the modulated CW probe in both the EAM and second SOA.