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Quantum-well laser with integrated passive waveguide fabricated by neutral impurity disordering

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4 Author(s)
Andrew, S.R. ; Dept. of Electron. & Electr. Eng., Glasgow Univ., UK ; Marsh, J.H. ; Holland, M.C. ; Kean, A.H.

Double quantum-well lasers have been fabricated with an integrated low-loss waveguide in which the quantum wells have been intermixed by neutral impurity disordering. Threshold currents of devices with integrated 600- mu m passive guides show an increase of less than 10% over normal Fabry-Perot lasers of the same active length, confirming that the propagation loss in the passive wavelength is significantly reduced by disordering to 4.5+or-2 cm/sup -1/. Comparison with unimplanted devices suggests that the implanted dopant also passivates the waveguide electrically.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:4 ,  Issue: 5 )

Date of Publication:

May 1992

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