Numerical Simulation and Analysis of A Cost Effective Digital Fibre Optic Link

Simulation study of a cost effective digital fiber optic link comprising of an 850nm VCSEL diode source, a multimode fiber and a PIN photodetector based receiver is reported in this paper. The-characteristics of the VCSEL source are evaluated under DC and Transient conditions. The link performance is evaluated at 1Gb/s, at different link lengths and operating temperatures. For 20 degree celsius ambient temperature, the link output is efficiently detectable upto a length of 600 m. For a fiber length of 600 m, the optical power is observed to be appreciable till a temperature of 40 degree celsius.