Title :
High power narrow divergence DFB laser diode at 1.55 μm
Author :
Jeon, H. ; Mathur, A. ; Ziari, M.
Author_Institution :
SDL Inc., San Jose, CA, USA
fDate :
6/25/1998 12:00:00 AM
Abstract :
Over 115 mW single longitudinal mode laser output was obtained from an InGaAsP MQW DFB waveguide laser diode integrated with a vertically tapered mode expander. The circular cross-sectional laser beam profile with the FWHM divergence angles of 9.5°×13.5° enabled a high coupling efficiency of 63% directly into a lensed singlemode fibre, resulting in a fibre coupled output of over 70 mW
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; infrared sources; laser beams; laser modes; laser transitions; optical fibre couplers; quantum well lasers; waveguide lasers; 1.55 mum; 63 percent; 70 mW; FWHM divergence angles; InGaAsP; InGaAsP MQW DFB waveguide laser diode; circular cross-sectional laser beam profile; fibre coupled output; high coupling efficiency; high power narrow divergence DFB laser diode; lensed singlemode fibre; optical fibre couplers; single longitudinal mode laser output; vertically tapered mode expander;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980923
