Title:
LIGHT RECEIVING DEVICE, OPTICAL TRANSMITTER AND LIGHT SEPARATING METHOD
Document Type and Number:
Japanese Patent JP3495150
Kind Code:
B2
Abstract:
PURPOSE: To provide miniaturized, lightened, stable, polarization dependency reduced and high-efficiency demultiplexing in comparison with the optical demultiplexer of a conventional optical TDM.
CONSTITUTION: This light receiving device is provided with an optical waveguide 2 for propagating time sequential signal light pulse trains, plural optical gates 4 inserted and arranged at the prescribed positions of the optical waveguide 2 so as to switch a transmission mode and a light reception mode corresponding to the presence/absence of a trigger light pulse, mode switching part for switching the respective optical gates 4 from the transmission mode to the light reception mode by transmitting the trigger light pulse to the respective optical gates 4 so as to photodetect a prescribed slot contained in the signal light pulse train at the respective plural optical gates 4, and reading circuit 9 for reading the respective slots photodetected by the respective optical gates 4 as parallel electric signals.
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Inventors:
Nobuo Suzuki
Application Number:
JP21474495A
Publication Date:
February 09, 2004
Filing Date:
August 23, 1995
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G02F1/015; H01L27/15; H01L31/0264; H04J14/08; (IPC1-7): H04J14/08; G02F1/015; H01L27/15; H01L31/0264
Domestic Patent References:
| JP5102515A |
Other References:
【文献】小柳修爾,オプトロニクス 光技術用語辞典,日本,株式会社オプトロニクス社,p.130,p.263
Attorney, Agent or Firm:
Takehiko Suzue