| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device, system and method in which the same transponder is allowed to achieve a transmission and reception end function and a regenerative repeating function and the wavelength or incoming and outgoing paths for transmission and reception can be freely set remotely. <P>SOLUTION: A transponder (optical transmitter/receiver) has a switch 23, which switches on and off the loop-back of an optical path, to allow the same transponder to achieve a transmission and reception end function on an optical path and a regenerative repeating function at an intermediate point on the optical path. When a new optical path is built, the assignment of the wavelength and the allocation of the incoming and outgoing paths for transmission and reception are set remotely. <P>COPYRIGHT: (C)2010,JPO&INPIT |
