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Proceedings Paper

Experimental determination of power penalty contributions in an optical Costas-type phase-locked loop receiver
Author(s): Dieter F. Hornbachner; Martin A. Schreiblehner; Walter R. Leeb; Arpad L. Scholtz
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Paper Abstract

We designed, realized and tested a 140 Mbit/s P5K optical homodyne receiver using diode-pumped Nd:YAG ring lasers at X = 1.064im. Phase synchronization between the input signal and the local oscillator laser was achieved using a Costas-type phase-locked ioop. Pre-processing of the optical signals to be synchronized was done with a basically lossless six-port 90° hybrid. Each one of the employed front ends was implemented by means of a transimpedance preamplifier and by two InGaAs photodiodes operating in a balanced manner. We report on the receiver configuration, emphasizing the realization of the optical pre-processing unit and the front ends. Furthermore, we present measurement results characterizing the receiver performance by the bit-error rate dependence on optical input signal power. The total degradation of the receiver sensitivity -as compared to the ideal case of shot-noise limitation - was 5.9dB.

Paper Details

Date Published: 9 June 1992
PDF: 9 pages
Proc. SPIE 1635, Free-Space Laser Communication Technologies IV, (9 June 1992); doi: 10.1117/12.59251
Show Author Affiliations
Dieter F. Hornbachner, Technische Univ. Wien (Austria)
Martin A. Schreiblehner, Technische Univ. Wien (Austria)
Walter R. Leeb, Technische Univ. Wien (Austria)
Arpad L. Scholtz, Technische Univ. Wien (Austria)

Published in SPIE Proceedings Vol. 1635:
Free-Space Laser Communication Technologies IV
David L. Begley; Bernard D. Seery, Editor(s)

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