H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 14/02 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2315416
The object of the present invention is to provide a full-mesh optical wavelength division multiplexing transmission network device which is capable of exhibiting excellent communication quality and being mass produced, by reducing the accumulation number of coherent crosstalk lights, without any modification of constituent components constituting the conventional one. In the full-mesh optical wavelength division multiplexing transmission network device, provided is an N × N wavelength multi/demultiplexer having a periodic wavelength demultiplexing property in input/output combination, which performs input/output from/to first and second I/O port groups for optical signals and allows lightwaves traveling in opposite directions not to interfere with each other within the circuit, thus reducing the accumulation number of coherent crosstalk lights in WDM wavelength lights and improving S/N of a received light. Particularly, by preventing the accumulation of adjacent crosstalk lights, communications with higher quality can be achieved.
Kamei Shin
Kaneko Akimasa
Kato Kuniharu
Suzuki Senichi
Marks & Clerk
Nippon Telegraph And Telephone Corporation
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