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Optical Engineering

Enhanced transmitter linearity for multiple subcarrier optical transmission
Author(s): Tibor Berceli; Ferenc Mernyei
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Paper Abstract

In subcarrier multiplexed optical transmission systems the modulation linearity of the transmitter plays an important role because that nonlinearity gives rise to serious harmonic and intermodulation distortions. Therefore the modulation linearity of the laser has been significantly improved by applying an active matching technique. For that purpose, the microwave impedance of the laser has been measured as a function of the bias current and frequency. Based on the measured data, a nonlinear equivalent circuit has been derived that was used in the matching process. As a result, a significant improvement in the laser modulation linearity has been attained.

Paper Details

Date Published: 1 October 1993
PDF: 6 pages
Opt. Eng. 32(10) doi: 10.1117/12.145397
Published in: Optical Engineering Volume 32, Issue 10
Show Author Affiliations
Tibor Berceli, Research Institute for Telecommunications (Hungary)
Ferenc Mernyei, Technical Univ. of Budapest (Hungary)

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