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Quantum-Well Lasers for High-Speed Optical InformationProcessing

Published online by Cambridge University Press:  21 February 2011

M. C. Wu,
Y. K. Chen,
T. Tanbun-Ek and
R. A. Logan
M. C. Wu
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
Y. K. Chen
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
T. Tanbun-Ek
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
R. A. Logan
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
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Abstract

Monolithic colliding pulse mode-locked (CPM) multiple quantum well lasersgenerating optical pulses as short as 600 femtoseconds are reported. The CPMlaser is built on a single chip of InGaAs/InGaAsP multiple quantum welllaser. The pulse repetition rates are synchronized with an rf synthesizer upto 40 GHz in hybrid mode-locking scheme. In passive mode-locking scheme, arecord high repetition rate of 350 GHz has been achieved. All thesub-picosecond pulses obtained have pulse shapes of sech2 andtransform-limited timebandwidth products between 0.30 to 0.34. This newoptical source is very useful for ultra-high speed optical switching andoptical logic in optical fibers, and ultra-long distance optical solitontransmissions.

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