Title :
Optical fibre up-taper back-reflector for laser transmitter evaluation
Author :
Benner, A.F. ; Fishman, Dmitry A. ; Presby, H.M.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ
fDate :
11/10/1988 12:00:00 AM
Abstract :
Evaluation of reflection effects on semiconductor laser transmitters is complicated by multipath interference, which causes degradations in bit-error-rate and is independent of laser isolation. The authors have constructed a variable back-reflector utilising optical fibre up-tapers, which eliminates multipath interference effects by reducing spurious reflection levels to below -50 dB. Reflection levels of -50 dB to -16.5 dB into the laser cavity are possible. Results of measurements of reflection effects on several multilongitudinal mode 1.3 μm lasers operating at 1.7 Gbit/s are shown
Keywords :
fibre optics; laser variables measurement; light reflection; optical communication equipment; semiconductor junction lasers; transmitters; 1.3 micron; 1.7 Gbit/s; BER degradation; bit-error-rate; interference elimination; laser transmitter evaluation; multilongitudinal mode; multipath interference; optical fibre up-tapers; reflection effects; semiconductor laser; variable back-reflector;
Journal_Title :
Electronics Letters
