Title :
A CMOS analogue predistortion circuit for wideband optical fibre links
Author :
Lin, Fu-Chuan ; Holburn, D.M. ; Lalithambika, Vinod A. ; Mears, Robert J. ; Hum, Chak H. ; Walker, Stuart D.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
Abstract :
The laser is a major source of nonlinearity for optical fibre communication systems. 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 12 dBm improvement in the optical fibre system. The optical fibre transmitter front-end with predistortion lineariser is fabricated using the austriamicrosystems (AMS) 0.35 μm CMOS technology.
Keywords :
CMOS analogue integrated circuits; integrated circuit design; linearisation techniques; nonlinear distortion; nonlinear network synthesis; optical fibre communication; optical transmitters; surface emitting lasers; 0.35 micron; CMOS analogue predistortion circuit; VCSEL; circuit design; directly modulated vertical cavity surface emitting laser; inverse transfer characteristic; linearisation; nonlinearity; optical fibre communication systems; optical fibre transmitter front-end; predistortion lineariser; wideband optical fibre links; CMOS analog integrated circuits; CMOS technology; Circuit simulation; Fiber lasers; Optical fiber communication; Optical fibers; Predistortion; Surface emitting lasers; Vertical cavity surface emitting lasers; Wideband;
Conference_Titel :
Electrical and Computer Engineering, 2004. Canadian Conference on
Print_ISBN :
0-7803-8253-6
DOI :
10.1109/CCECE.2004.1345002
