Abstract

Several optical Code Division Multiplexing (CDM) networks based on Spread Spectrum (SS) transmission techniques have been proposed over the past ten years.^1–5 In this paper we describe and demonstrate experimentally a SS system which is combined with optical Frequency Division Multiplexing (FDM) in order to maximise the number of active users in the network. The system employs BPSK (Binary Phase Shift Keying) modulation format and uses at the receiver a narrow passband Fabry-Perot optical filter along with direct detection and post detection thresholding.

© 1995 IEEE