Title :
Laterally gain-coupled 1.57 μm DFB lasers with chromium surface grating and self-aligned Ti/Pt/Au ohmic contact
Author :
Schreiner, R. ; Körbl, M. ; Gräbeldinger, H. ; Gentner, J.L. ; Schweizer, H.
Author_Institution :
4. Phys. Inst., Stuttgart Univ., Germany
fDate :
3/30/2000 12:00:00 AM
Abstract :
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
Keywords :
Bragg gratings; chromium; distributed feedback lasers; gold; ohmic contacts; platinum; titanium; 1.57 micron; 17 mA; Cr; Ti-Pt-Au; continuous wave threshold current; fabrication; gain coupled DFB laser; lateral surface chromium Bragg grating; monomode emission; self-aligned Ti/Pt/Au ohmic contact; sidemode suppression ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000500
