Title :
Design, simulation and performance analysis of a 40 Gbps transimpedance amplifier for optical fiber links
Author :
Rashed, Mohammad G. ; Madubata, Christian D.
Author_Institution :
Dept. of Electr. Eng., Tuskegee Univ., AL, USA
Abstract :
This paper presents the design of a 40 Gbps BiCMOS transimpedance amplifier for use as the front-end preamplifier stage of an optical communication receiver system. The design is modeled using Pspice. Stability is achieved using a shunt-shunt feedback circuit. This feedback circuit is also used to improve the bandwidth of the amplifier. A shunt inductor peaking technique is used to further extend the bandwidth. Analytical expressions were developed for the transfer functions of the input stage, output stage and the overall amplifier. Frequency response curves were obtained for each stage using MATLAB. The performance of the designed amplifier was analyzed and evaluated with respect to gain, bandwidth and noise using developed analytical models and Pspice simulation results. This amplifier is stable, provides good gain and should be suitable for OC-768 SONET applications.
Keywords :
BiCMOS integrated circuits; SPICE; amplifiers; circuit feedback; frequency response; optical engineering computing; optical fibre communication; optical receivers; stability; 40 Gbit/s; BiCMOS transimpedance amplifier; MATLAB; OC-768 SONET; Pspice; frequency response curve; front-end preamplifier stage; optical communication receiver system; shunt inductor peaking technique; shunt-shunt feedback circuit; transfer functions; Analytical models; Bandwidth; BiCMOS integrated circuits; Feedback circuits; Optical amplifiers; Optical design; Optical fiber amplifiers; Optical fibers; Performance analysis; Semiconductor optical amplifiers;
Conference_Titel :
System Theory, 2004. Proceedings of the Thirty-Sixth Southeastern Symposium on
Print_ISBN :
0-7803-8281-1
DOI :
10.1109/SSST.2004.1295694
