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Laterally gain-coupled 1.57 μm DFB lasers with chromium surface grating and self-aligned Ti/Pt/Au ohmic contact

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5 Author(s)
Schreiner, R. ; 4. Phys. Inst., Stuttgart Univ., Germany ; Korbl, M. ; Grabeldinger, H. ; Gentner, J.L.
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A simple method for fabricating gain coupled DFB lasers with lateral surface chromium Bragg gratings and self-aligned low capacitance ohmic contacts is reported. These InGaAsP/InP lasers show monomode emission with a sidemode suppression ratio of 40 dB. For 243 μm long devices a continuous wave threshold current of 17 mA was measured at room temperature

Published in:

Electronics Letters  (Volume:36 ,  Issue: 7 )