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Title: 5 Gbit/s direct optical DPSK modulation of a 1530-nm DFB laser

Journal Article · · IEEE Photonics Technology Letters; (USA)
DOI:https://doi.org/10.1109/68.36047· OSTI ID:5419178
 [1]
  1. Bellcore, Red Bank, NJ (US)

In this paper 5 Gbit/s direct optical differential-phase-shift-keying (DPSK) modulation of a 1530-nm distributed feedback laser is demonstrated using injection current modulation with a bipolar signal format. There was no degradation of the optical DPSK signal due to thermal frequency modulation of the laser. This direct DPSK modulation technique avoids the insertion loss and systems complexity of external DPSK modulators.

OSTI ID:
5419178
Journal Information:
IEEE Photonics Technology Letters; (USA), Vol. 1:8; ISSN 1041-1135
Country of Publication:
United States
Language:
English