• Title : Carrier sense using subcarrier-multiplexed signaling for optical frequency division multiple access
• Author : K. Kitayama
• Journal : IEEE J. Lightwave Technol., vol. 15, pp. 758-765, 1997.
• Abstract : A novel subcarrier multiplexing based carrier sense technique called SCM-CS is proposed and is experimentally demonstrated. It can prevent the contention in optical frequency division multiple access networks that use an access protocol based on a fixed-wavelength transmitter and wavelength-tunable receiver. When two or mode SCM signals on the same subcarrier frequency at different wavelengths simultaneously address the same destination node, SCM-CS detects the sum of the subcarrier frequencies by using RF heterodyne detection and denies the access. SCM=CS permits node access only if the carrier sense is negative which means that the destination mode is idle. In the experiment, SCM-CS is successfully performed for 6.2 Mb/s SCM signals of the subcarrier frequency of 164 MHz with the frequency difference of the optical carriers up to 40GHz.
• Key words : Heterodying, local area networks, optical fiber communication, subcarrier multiplexing, wavelength division multiplexing.

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