SCM OPTICAL MULTIPLE-ACCESS NETWORK WITH CASCADED OPTICAL MODULATORS

The authors propose a novel optical multiple-access network with casca ded optical intensity modulators using subcarrier multiplexing (SCM). This network is free from beat noise because each node shares signal l ight from one transmitter laser diode (LD) with the other nodes. The p roperties involved in intermodulation distortion due to cascade connec tion of the optical modulators were analyzed, and the applicability of this network to a video monitoring system was investigated. Results i ndicate that a wide-area monitoring system with 260-km transmission di stance and 52 video terminals is possible with the proposed network.