OPTICAL PACKET BUFFER

Japanese Patent JP3566172

B2

PROBLEM TO BE SOLVED: To remove instability caused by oscillation by avoiding the going around of the same wavelength by using a wavelength transducer, to realize miniaturization and integration, and to provide an optical packet buffer which can deal with also the packet with an arbitrary length.
SOLUTION: Signal light from an optical waveguide 103 for input and signal light from a delay loop optical waveguide 102 are multiplexed with an optical coupler 109, are inputted in an array waveguide grating 105 for optical demultiplexing to be branched. Signal light is then outputted to a prescribed output port according to the wavelength of signal light, and is inputted in each wavelength transducer 101a-d. The wavelength of each signal light is transformed into a first wavelength or second wavelength by each wavelength transducer, and the signal light from each wavelength transducer is multiplexed by an array waveguide grating 106 for optical multiplexing. The signal light of the first wavelength is outputted to the delay loop optical waveguide 102, and the signal light of the second wavelength is outputted to the optical waveguide 104 for output.

Takashi Sakamoto
Shigetoshi Matsuoka
Noguchi alone
Akira Okada
Kato Kazutoshi
Yoshihisa Kai
Toshio Ito

JP2000074305A

September 15, 2004

March 16, 2000

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Nippon Telegraph and Telephone Corporation

G02F1/313; G02F1/365; G02F2/02; H04B10/291; H04B10/556; H04L12/70; (IPC1-7): G02F1/313; G02F2/02; H04B10/00; H04L12/56

JP10145391A
JP2000004214A
JP10268370A
JP6110103A
JP8171108A

Hidekazu Miyoshi
Yasuo Miyoshi

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