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Proceedings Paper

Injection-locked passively mode-locked semiconductor laser for optical heterodyne detection using a single axial mode
Author(s): Wangkuen Lee; Michael M. Mielke; Shahab Etemad; Peter J. Delfyett
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Paper Abstract

The optical heterodyne detection for an extremely densely channelized coherent communication systems using phase coherent optical combs is demonstrated by using a passively modelocked semiconductor laser injection locked to a master laser oscillator. The single sideband noise of the heterodyne beat tone at 13.160 GHz was reduced to -123 dBc/Hz at 100 kHz offset from the carrier by exploiting the excellent noise rejection performance of a commercially available microwave bandpass filter. A signal-to-noise ratio of over 65 dB/Hz has been achieved in a single channel filtered from two analog RF signals detuned by only 200 MHz. These results show improved signal-to-noise ratio and superior crosstalk reduction between densely packed neighboring channels via electrical manipulation of the optical heterodyne detection signal.

Paper Details

Date Published: 3 August 2004
PDF: 5 pages
Proc. SPIE 5435, Enabling Photonic Technologies for Aerospace Applications VI, (3 August 2004); doi: 10.1117/12.541692
Show Author Affiliations
Wangkuen Lee, College of Optics and Photonics/Univ. of Central Florida (United States)
Michael M. Mielke, College of Optics and Photonics/Univ. of Central Florida (United States)
Shahab Etemad, Telcordia Technologies, Inc. (United States)
Peter J. Delfyett, College of Optics and Photonics/Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 5435:
Enabling Photonic Technologies for Aerospace Applications VI
Andrew R. Pirich; Michael J. Hayduk; Eric Donkor, Editor(s)

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