Title :
Effect of laser diode characteristics on the performance of an SCM-OFDM direct detection system
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
fDate :
12/1/1993 12:00:00 AM
Abstract :
This paper describes: the application of the microwave subcarrier multiplexing technique (SCM) in an optical frequency division multiplexing (OFDM) system which employs an optical FM direct detection scheme. Direct frequency modulation of a laser diode offers the advantages of compact optical spectrum and simple driving circuit; it also permits a more effective utilisation of optical channel capacity. The carrier-to-noise ratio performance of each subcarrier channel is evaluated. The effect of laser diode phase noise and relative intensity noise as well as the intermodulation product of subcarrier channels on the overall system performance is analysed and the results presented
Keywords :
frequency division multiplexing; intermodulation; optical links; optical modulation; semiconductor lasers; subcarrier multiplexing; SCM; SCM-OFDM direct detection system; carrier-to-noise ratio performance; compact optical spectrum; direct frequency modulation; intermodulation product; laser diode characteristics; laser diode phase noise; microwave subcarrier multiplexing technique; optical FM direct detection scheme; optical channel capacity; optical frequency division multiplexing; overall system performance; relative intensity noise; simple driving circuit; subcarrier channels;
Journal_Title :
Optoelectronics, IEE Proceedings J
