EP0313388A2
Expired / Lapsed
EP
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Light triggering switch
Assignee: KDDI Corp
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Filing: 1988-10-21
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Granted: —
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Expires: 2008-10-21
Abstract
Abstract A light triggering switch for switching the optical path of an input optical signal to a desired output optical path. A portion of an optical control signal of a predetermined wavelength is branched by a branching filter (41,). An electrically-controlled optical switch (54) is provided for converting the branched optical control signal into an electrical signal and for switching the optical signal to the desired output optical path in accordance with the intensity of the converted electrical signal. In place of the electrically-controlled optical switch, a nonlinear reflector type optical switch (40) may be provided for switching the optical signal to the desired output optical path in accordance with the intensity of the branched optical control signal.
Inventors
- 👤 Katsuyuki Utaka
- 👤 Masanobu Fujioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 23:24
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/0001; H04Q11/0003; G; G02; G02F; G02F1/00; G02F1/29; G02F1/31; G02F1/313
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterised by the provision of: a branching filter (41) for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch (54) which converts the branched optical control signal into an electrical signal and switches the optical signal to the desired output optical path in accordance with the intensity of the converted electrical signal.
Claim 2
Dependent Claim
80 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterised by the provision of: a branching filter (41) for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch (54) which converts the branched optical control signal into an electrical signal and switches the optical signal to the desired output optical path in accordance with the intensity of the converted electrical signal.
Claim 3
Dependent Claim
103 words
A light triggering switch which switches the optical path of an input signal to a desired output optical path, characterised by the provision of: an optical memory section (44) having a function of storing one of input optical signals which has no priority for the output optical path; a branching filter (41) for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch (54) which converts the branched optical control signal into an electrical signal and switches the optical signal to the desired output optical path in accordance with the intensity of the converted electrical signal.
Claim 4
Dependent Claim
103 words
A light triggering switch which switches the optical path of an input signal to a desired output optical path, characterised by the provision of: an optical memory section (44) having a function of storing one of input optical signals which has no priority for the output optical path; a branching filter (41) for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch (54) which converts the branched optical control signal into an electrical signal and switches the optical signal to the desired output optical path in accordance with the intensity of the converted electrical signal.
Claim 5
Dependent Claim
70 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterised by the provision of: a branching filter for branching a portion of an optical control signal of a predetermined wavelength; and a nonlinear reflector type optical switch which switches the optical signal to the desired output optical path in accordance with the intensity of the branched optical control signal.
Claim 6
Dependent Claim
70 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterised by the provision of: a branching filter for branching a portion of an optical control signal of a predetermined wavelength; and a nonlinear reflector type optical switch which switches the optical signal to the desired output optical path in accordance with the intensity of the branched optical control signal.
Claim 7
Dependent Claim
96 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterised by the provision of: an optical memory section (44) having a function of storing one of input optical signals which has no priority for the output optical path; a branching filter (41) for branching a portion of an optical control signal of a predetermined wavelength; and a nonlinear reflector type optical switch (40) which switches the optical signal to the desired output optical path in accordance with the intensity of the branched optical control signal.
Claim 8
Dependent Claim
96 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterised by the provision of: an optical memory section (44) having a function of storing one of input optical signals which has no priority for the output optical path; a branching filter (41) for branching a portion of an optical control signal of a predetermined wavelength; and a nonlinear reflector type optical switch (40) which switches the optical signal to the desired output optical path in accordance with the intensity of the branched optical control signal.
References Cited (Backward Citations)
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