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Modulation characteristics of a DFB-laser with integrated spot-size converter for efficient laser fiber coupling

Book ·
OSTI ID:536239
; ; ; ; ;  [1];  [2]
  1. Deutsche Telekom AG, Technologiezentrum, Darmstadt (Germany)
  2. Univ. Wuerzburg (Germany). Technische Physik

The RF-modulation emission characteristics of a MQW DFB laser monolithically integrated with a laterally tapered spot-size transformer on InGaAsP/InP were investigated and key results were presented. Despite the relatively simple design of the devices they are characterized by good high speed lasing properties with a direct modulation response exceeding 5 GHz. A simple low loss chip-fiber coupling arrangement with large optical alignment tolerances was demonstrated and is regarded as a particular advantage of these devices. Their experiments confirm the attractivity of this integration concept for low cost laser components in optical transmission systems.

OSTI ID:
536239
Report Number(s):
CONF-960498--; ISBN 0-7803-3283-0
Country of Publication:
United States
Language:
English