Optical adding and dropping device and optical transmission apparatus

摘要

An optical adding and dropping device includes a drop section including an input port and having a through port and a plurality of drop ports set as output ports, a first multiplexer adapted to multiplex light from the through port and light from a plurality of add ports, and a spectrum foot removing section provided on the input side of the first multiplexer and adapted to remove a foot of a spectrum of light to be inputted from the add ports to the first multiplexer. The optical adding and dropping device can be configured at a low cost while it has adding and dropping functions.

主权项

1. An optical adding and dropping device, comprising:
a drop section including an input port and having a through port and a plurality of drop ports set as output ports; a first multiplexer adapted to multiplex light from said through port and light from a plurality of add ports; and a spectrum foot removing section provided on the input side of said first multiplexer and adapted to remove a self-spread of a channel light having a center frequency, the self-spread occurring on the opposite sides of the center frequency of each channel light to be inputted from said add ports to said first multiplexer, wherein the center frequency is a fundamental frequency of the channel light, and sidebands of the fundamental frequency are excluded from the self-spread.