Title :
Narrow-beam 1.3 μm superluminescent diode with butt-jointed selectively grown spot-size converter
Author :
Okamoto, H. ; Wada, M. ; Sakai, Y. ; Kawaguchi, Y. ; Kondo, Y. ; Kadota, Y. ; Kishi, K. ; Itaya, Y.
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
fDate :
3/13/1997 12:00:00 AM
Abstract :
A narrow-beam superluminescent diode (SLD) has been developed using a butt-jointed selectively grown spot-size converter and a newly designed absorption region. High output power and low spectral modulation have been achieved. The far field patterns for both the horizontal and vertical direction were as narrow as 10°. The coupling efficiency of the output power into a flat-ended singlemode fibre (4 μm spot size) was as high as -1.9 dB without lenses
Keywords :
light absorption; optical waveguides; semiconductor quantum wells; superluminescent diodes; 1.3 micron; absorption region; butt-jointed spot-size converter; far field patterns; high output power; low spectral modulation; narrow-beam superluminescent diode; selectively grown spot-size converter; strained MQW active region;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970309
