Abstract
In any wavelength-division multiple-access (WDMA) network using wavelength-tunable receivers, a control channel is required for providing the receiving node with information as to which wavelength(s) carry the incoming data packets. Typical control protocols for achieving this control function include the use of (a) a common signaling wavelength shared by all nodes,1 (b) a subcarrier-multiplexed (SCM) fixed-wavelength channel with central control,2 (c) subcarrier pilot tones,3 (d) an SCM header superposed on baseband payload,4 and (e) SCM control channels without central control.5 Experimental demonstrations based on protocols (b), (c), and (d) have recently been reported.2-4 In this paper a WDMA network based on protocol (e) is experimentally demonstrated. In the network an acousto-optic tunable filter is used at the receiving node for wavelength selection. Commercially available TAXIChip® integrated circuits and a microprocessor-based controller are used for SCM control-header conversions and processing.
© 1994 Optical Society of America
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