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Continuous-wave operation of 1.5 ¿m distributed-feedback ridge-waveguide lasers

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4 Author(s)
L. D. Westbrook ; British Telecom Research Laboratories, Ipswich, UK ; A. W. Nelson ; P. J. Fiddyment ; J. S. Evans

CW operation of 1.5 ¿m ridge-waveguide DFB lasers is reported for the first time. The ridge-waveguide DFB laser structure offers the prospect of high modulation speeds due to the absence of parasitic capacitances associated with reverse-biased current-blocking layers. These devices also represent the first report of CW operation of DFB lasers fabricated using the hybrid LPE/MOCVD crystal-growth technique and also of DFB lasers with gratings produced by electron-beam lithography.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 6 )