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AssigneeNippon Telegraph and Telephone Corporation
InventorsAtsuko KAWAKITA, Kazutaka HARA, Yasutaka KIMURA, Kenji HORIKAWA, Hiroyuki FURUKAWA
Estimating the term…
An object is to provide an optical communication system and an optical communication method that are capable of, when assigning wavelengths on a per-service basis and providing services on a per-area basis, preventing degradation of signal quality due to linear crosstalk and preventing an increase in cost and size. An optical communication system according to the present invention includes an optical splitter 300 connecting N first ports and M second ports by a combination of 2×2 fiber optical splitters, N and M each being an integer of two or more, where wavelengths of optical signals to be received are limited for each group of optical receivers 106, by using a correlation between a fused extension length of at least one 2×2 fiber optical splitter directly connected to the first port, among the 2×2 fiber optical splitters, and wavelength output characteristics of the second port of the optical splitter 300.
An optical communication system comprising:
An optical communication system comprising:
An optical communication method performed by an optical splitter connecting N first ports and M second ports by a combination of 2×2 fiber optical splitters, N being an integer of two or more, M being an integer of two or more, the method including outputting, to respective ones of the second ports, as a single-wavelength optical signal or a multiplexed-wavelength optical signal, optical signals of different wavelengths input to respective ones of the first ports or a multiplexed-wavelength optical signal input to at least one of the first ports, wherein wavelength output characteristics of the second port of the optical splitter are controlled based on a fused extension length of at least one of the 2×2 fiber optical splitters that is directly connected to the first port, among the 2×2 fiber optical splitters of the optical splitter, and wavelengths of optical signals to be received are limited for each group of the optical receivers connected to the second port of the optical splitter.
Dependencies are inferred from the claim text.