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US4923265A
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Light triggering switch
Assignee: KDDI Corp
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Filing: 1988-10-18
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Granted: 1990-05-08
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Expires: 2008-10-18
Abstract
Abstract A light triggering switch is disclosed 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. An electrically-controlled optical switch 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 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
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:27
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
84 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterized by the provision of: a branching filter for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch which converts the optical control signal after being branched by the branching filter 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
84 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterized by the provision of: a branching filter for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch which converts the optical control signal after being branched by the branching filter 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
107 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterized by the provision of: an optical memory section having a function of storing one of input optical signals which has no priority for the output optical path; a branching filter for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch which converts the optical control signal after being branched by the branching filter into an electrical signal and switches the optical signal toi the desired output optical path in accordance with the intensity of the converted electrical signal.
Claim 4
Dependent Claim
107 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterized by the provision of: an optical memory section having a function of storing one of input optical signals which has no priority for the output optical path; a branching filter for branching a portion of an optical control signal of a predetermined wavelength; and an electrically-controlled optical switch which converts the optical control signal after being branched by the branching filter into an electrical signal and switches the optical signal toi the desired output optical path in accordance with the intensity of the converted electrical signal.
Claim 5
Dependent Claim
81 words
A light triggering switch which switches an optical path of an input optical signal including an optical control signal to a desired output optical path, characterized by the provision of: a branching filter for branching a portion of the 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 optical control signal after being branched by the branching filter.
Claim 6
Dependent Claim
81 words
A light triggering switch which switches an optical path of an input optical signal including an optical control signal to a desired output optical path, characterized by the provision of: a branching filter for branching a portion of the 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 optical control signal after being branched by the branching filter.
Claim 7
Dependent Claim
99 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterized by the provision of: an optical memory section having a function of storing one of input optical signals which has no priority for the output optical path; 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 optical control signal after being branched by the branching filter.
Claim 8
Dependent Claim
99 words
A light triggering switch which switches the optical path of an input optical signal to a desired output optical path, characterized by the provision of: an optical memory section having a function of storing one of input optical signals which has no priority for the output optical path; 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 optical control signal after being branched by the branching filter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |