CUED Publications database

A CMOS analogue predistortion circuit for wideband optical fibre links

Lin, FC and Holburn, DM and Lalithambika, VA and Mears, RJ and Hum, CH and Walker, SD (2004) A CMOS analogue predistortion circuit for wideband optical fibre links. Canadian Conference on Electrical and Computer Engineering, 1. 0245-0248. ISSN 0840-7789

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The laser is a major source of nonlinearity for optical fibre communication systems. In this paper, we propose a CMOS analogue predistortion circuit to reduce laser nonlinearity for wideband optical fibre links. The circuit uses a nonlinearity having the inverse transfer characteristic of the directly modulated vertical cavity surface emitting laser (VCSEL). It is shown by post-layout simulation that the predistortion circuit shows 12dBm improvement in the optical fibre system. The optical fibre transmitter front-end with predistortion lineariser is being fabricated using the austriamicrosystems (AMS) 0.3 5μm CMOS technology.

Item Type: Article
Uncontrolled Keywords: Analogue predistortion Intermodulation distortion Linearisation Optical fibre links QAM-VDSL signals
Depositing User: Cron job
Date Deposited: 16 Jul 2015 14:10
Last Modified: 25 Nov 2015 11:33