Optical fibre up-taper back-reflector for laser transmitter evaluation

10 November 1988

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 24 (23) , 1417-1418
https://doi.org/10.1049/el:19880968

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. We have constructed a variable back-reflector utilising optical fibre up-tapers, which eliminates multipath interference effects by reducing spurious reflection levels to below −50dB. Reflection levels of −50dB to −16.5dB into the laser cavity are possible. Results of measurements of reflection effects on several multilongitudinal mode 1.3μm lasers operating at 1.7Gbit/s are shown.

Keywords

BIT-ERROR-RATE
INTERFERENCE ELIMINATION
REFLECTION EFFECTS
1.3 MICRON
MULTIPATH INTERFERENCE
LASER TRANSMITTER EVALUATION
MULTILONGITUDINAL MODE
1.7 GBIT/S
OPTICAL FIBRE UP-TAPERS
BER DEGRADATION
VARIABLE BACK-REFLECTOR
SEMICONDUCTOR LASER

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