Optical apparatus and optical cross connect apparatus

摘要

An optical apparatus is disclosed wherein increase of the number of wavelength selective switches provided for a standby system can be suppressed The optical apparatus includes a plurality of upstream side optical devices (101 to 104) and a plurality of downstream side optical devices (111 to 114) configured such that a plurality of output ports (#21 to #24) to be set as output destinations of light from a plurality of input ports (#11 to #14) can be changed over for each wavelength. An upstream side standby switch (121) is connected at a plurality of inputs thereof individually to the input ports (#11 to #14) and can change over an output of light from the inputs for each wavelength. A downstream side standby switch (122) is connected at an input thereof to the output of the upstream side standby switch (121) and at a plurality of outputs thereof individually to the output ports (#21 to #24) and can output light from the input to the plural outputs thereof.