Title :
Influence of certain system impairments on the performance of optically preamplified receivers
Author :
Fyath, R.S. ; McDonald, A.J. ; O´Reilly, J.J.
Author_Institution :
Sch. of Electron. Eng. Sci., Wales Univ., Bangor, UK
fDate :
10/27/1989 12:00:00 AM
Abstract :
Presents an analysis of the performance degradation of optically preamplified receivers under the influence of certain system impairments. Specific issues addressed in detail include: the influence of the extinction ratio associated with the incoming optical signal, input and output amplifier coupling losses, and frequency mismatch between the signal and the amplifier peak gain. The results show that these new receivers are more susceptible to the input signal extinction ratio than are conventional PIN or APD receivers, especially when a narrow bandwidth filter is used. The input coupling loss has a greater influence on the receiver performance than does the output coupling loss. In addition, as one expects, any deviation in the signal frequency from the amplifier peak gain results in a significant degradation in receiver performance, increasing with facet reflectivity and amplifier gain
Keywords :
laser beam applications; optical communication equipment; semiconductor junction lasers; APD; PIN; amplifier coupling losses; coupling loss; extinction ratio; facet reflectivity; narrow bandwidth filter; optical communication equipment; optically preamplified receivers; semiconductor lasers; system impairments;
Conference_Titel :
Optical Amplifiers for Communications, IEE Colloquium on
