Title :
Narrow beam 1.3 μm superluminescent diode with butt-jointed selectively grown spot size converter
Author :
Okamoto, Hiroshi ; Wada, Masaki ; Sakai, Yoshiki ; Kawaguchi, Yuki ; Kondo, Yuta ; Kadota, Yoichi ; Kishi, Kotaro ; Itaya, Y.
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa
fDate :
4/24/1997 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 directions were as narrow as 10°. The coupling efficiency of output power into a flat-ended singlemode fibre (4 μm spot size) was as high as -1.9 dB without lenses
Keywords :
superluminescent diodes; 1.3 micron; absorption region; butt-jointed selectively grown spot size converter; coupling efficiency; far field pattern; flat-ended singlemode fibre; narrow beam superluminescent diode; output power; spectral modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970501
