HIGH-SPEED OPTICAL NETWORK FOR ASYNCHRONOUS MULTIUSER ACCESS APPLYINGPERIODIC SPECTRAL CODING OF BROAD-BAND SOURCES

The authors experimentally demonstrate robust asynchronous optical mul tiuser access using spectrally encoded broadband sources. In a system experiment, four transmitters operate simultaneously at 155.52 and 77. 76Mbit/s in an optically amplified tree network with standard singlemo de fibres. A BER of 10(-10) is achieved without an error floor using a tunable balanced receiver. This technique is suitable for application in arbitrary fibre network architectures.