Title:
OPTICAL SWITCH DEVICE
Document Type and Number:
Japanese Patent JP2964984
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical switch device reduced in its packaging volume and cost by integrally forming a space switch part and an wavelength switch part.
SOLUTION: An wavelength converter 121 connecting its input terminal to an optical branching unit 131 and connecting its output terminal to an optical coupler 141 acts as an wavelength conveter only when a current is injected into a semiconductor optical amplifier included in its inside, and when a current is not injected, outputs no light. Thereby the converter 121 can be allowed to act as a gate switch by turning on/off the injection current to the amplifier in the converter 121, so that the converter 121 constitutes a switch device having both of an wavelength conversion function and a space switch function. When plural wavelength converters 121 to 123 connected to one optical branching unit 131 are connected to respectively different optical couplers 141 to 143, the device can be provided with an wavelength multiplexing function.
More Like This:
Inventors:
SHIRAGAKI TATSUYA
Application Number:
JP8508597A
Publication Date:
October 18, 1999
Filing Date:
April 03, 1997
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G02F1/313; G02F1/31; G02F2/02; H04Q11/00; H04Q11/02; (IPC1-7): G02F1/31; G02F2/02; H04Q11/02
Domestic Patent References:
| JP6188517A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)