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Proceedings Paper

Novel electro-optical predistortion technique and its application in externally modulated CATV transmission systems
Author(s): Kuen-Ting Tsai; Chien Tai; Winston I. Way
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Paper Abstract

Conventional linearization techniques such as electrical pre-distortion or optical feedforward methods have been applied to Mach-Zehnder interferometer (MZI) modulators for CATV transmission systems. However, both methods can only ensure that the output of the MZI modulator meet the standard CATV requirements on composite second-order and composite triple beat, but cannot guarantee a satisfactory end-to-end system linearity. In this paper, we propose and demonstrate a novel linearization technique, which can simultaneously suppress the nonlinear distortions generated in a transmission system and increase the received carrier- to-noise ratio. This technique is based on offsetting the MZI bias voltage from its inflection point. Both analytical and experimental results are presented.

Paper Details

Date Published: 19 June 1998
PDF: 8 pages
Proc. SPIE 3420, Optical Fiber Communication, (19 June 1998); doi: 10.1117/12.312842
Show Author Affiliations
Kuen-Ting Tsai, National Chiao-Tung Univ. (Taiwan)
Chien Tai, National Chiao-Tung Univ. (Taiwan)
Winston I. Way, National Chiao-Tung Univ. (United States)

Published in SPIE Proceedings Vol. 3420:
Optical Fiber Communication
Winston I. Way; Franklin F. Tong; Alan Eli Willner, Editor(s)

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