Optical add/drop device
AssigneeFujitsu Limited
InventorsTakuji Maeda, Satoshi Kuroyanagi
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Abstract
Disclosed herein is an optical add/drop device applicable to an optical fiber network. This device includes a plurality of 2×2 switch elements (SE) provided on crosspoints arranged in the form of a matrix. Each of the switch elements switches between a bar state and a cross state. This device further includes input/output ports provided on the rows of the matrix and connected to the optical fiber network, and add/drop ports provided on the columns of the matrix. With this configuration, failure restoration can be easily performed with a simple configuration.
Claims5
An optical add/drop device applicable to an optical fiber network, comprising:
- a plurality of 2×2 switch elements provided on crosspoints arranged in the form of a matrix, each of said switch elements switching between a bar state and a cross state;
- input/output ports provided on the rows of said matrix and connected to said optical fiber network;
- and
- add/drop ports provided on the columns of said matrix.
An optical add/drop device applicable to an optical fiber network for propagating WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths, comprising:
- an optical demultiplexer and an optical multiplexer for relating said optical fiber network to a plurality of wavelength channels;
- and
- a plurality of switch units provided so as to respectively correspond to said plurality of wavelength channels;
- each of said switch units comprising:
- a plurality of 2×2 switch elements provided on crosspoints arranged in the form of a matrix, each of said switch elements switching between a bar state and a cross state;
- input/output ports provided on the rows of said matrix and connected to said optical fiber network;
- and
- add/drop ports provided on the columns of said matrix.
Dependencies are inferred from the claim text.