Title :
Optical coupling characteristics of laser diodes to thermally diffused expanded core fiber coupling using an aspheric lens
Author :
Kato, Kuniharu ; Nishi, Isao ; Yoshino, Kaon ; Hanafusa, Hiroaki
Author_Institution :
NTT Opto-Electron. Lab., Ibaraki, Japan
fDate :
5/1/1991 12:00:00 AM
Abstract :
A discussion is presented of the optical coupling characteristics of a 1.3 mu m laser diode to a thermally diffused expanded core (TEC) single-mode fiber coupling using an aspheric lens. The misalignment tolerance width for a 0.5 dB loss increment of the expanded core fiber was enlarged to 8.4 mu m from 1.9 mu m of a nonexpanded core fiber without a remarkable coupling-loss increase. The TEC fibers will make the LD module assembly easier, and reduce the assembly cost.<>
Keywords :
fibre optics; lenses; optical couplers; semiconductor junction lasers; 0.5 dB; 1.3 micron; aspheric lens; assembly cost; coupling-loss increase; laser diodes; misalignment tolerance width; optical coupling; single-mode fiber; thermally diffused expanded core fiber coupling; Assembly; Diode lasers; Glass; Lenses; Optical coupling; Optical fiber communication; Optical fiber devices; Optical losses; Packaging; Thermal expansion;
Journal_Title :
Photonics Technology Letters, IEEE
