发明名称 OPTICAL COMMUNICATION EQUIPMENT
摘要 PURPOSE:To realize the making of a channel into multiple channels extending over a comparatively broad frequencies by starting communication after confirming the fact that the communication by a first transmitter-receiver can be performed between the terminal of a communication opponent by an access control function by a second transmitter. CONSTITUTION:The second transmitter 11j provided side by side with the first transmitter 11g is connected to an optical multiplexer 11h, and the second transmitter 11j sends a signal with specific optical frequency fc in common to each terminal interposing a frequency area between a group of areas with optical frequencies f1-fn. A communication opposite terminal 1N receives the signal with frequency fc from a terminal 11 via a branching filter 1Nk, and it is supplied to a second receiver 1NK. As a result, mutual communication between the terminal 11 and the terminal 1N can be performed by using the optical frequency fc, and it is possible to reserve coherent communication large in capacity from a terminal 11 side by using the first transmitter 11g and the optical frequency fn.
申请公布号 JPH03263944(A) 申请公布日期 1991.11.25
申请号 JP19900063023 申请日期 1990.03.14
申请人 TOSHIBA CORP 发明人 OSHIMA SHIGERU
分类号 H04J14/00;H04B10/27;H04B10/272;H04J14/02;H04L12/44 主分类号 H04J14/00
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