US4002898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single mode laser multiterminal optical data communication system
Assignee: United States Department of the Navy
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Filing: 1976-01-26
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Granted: 1977-01-11
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Expires: 1996-01-26
Abstract
Abstract A multiterminal single mode communication system using single mode fibers d a single centrally located laser source. An electro-optical switch at the terminal switches pulses of light from the communication channel to a distribution channel comprising a single mode fiber. Information is switched on by an electrical modulator which controls the light switching of the switches and information is taken off by light detectors.
Inventors
- 👤 A. Fenner Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/27; H04B10/275; H04B10/2755
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
An optical communication system which includes in combination: a plurality of terminals optically connected with each other by a single fiber communication line and a single fiber distribution line; each of said terminals including a communication channel optical waveguide and a distribution channel optical waveguide with said distribution channel optical waveguide optically connected with said single fiber distribution line and said communication channel optical waveguide optically connected with said single fiber communication line; a continuous wave laser for producing a light beam; a single mode optical fiber interconnecting said laser light output with said distribution channel of one terminal; and a light detector at each terminal for detecting light on said communication channel thereby receiving any information on the communication channel.
Claim 2
Dependent Claim
121 words
An optical communication system which includes in combination: a plurality of terminals optically connected with each other by a single fiber communication line and a single fiber distribution line; each of said terminals including a communication channel optical waveguide and a distribution channel optical waveguide with said distribution channel optical waveguide optically connected with said single fiber distribution line and said communication channel optical waveguide optically connected with said single fiber communication line; a continuous wave laser for producing a light beam; a single mode optical fiber interconnecting said laser light output with said distribution channel of one terminal; and a light detector at each terminal for detecting light on said communication channel thereby receiving any information on the communication channel.
Claim 3
Dependent Claim
37 words
An optical communication system as claimed in claim 1 wherein; each terminal includes an electro-optic coupler for coupling optical radiation from said distribution channel to said communication channel and from said communication channel to said distribution channel.
Claim 4
Dependent Claim
54 words
An optical communication system as claimed in claim 2 which includes: a laser light distribution optical waveguide coupler panel for distributing laser light from a single source to a plurality of different distribution channels each of which include a plurality of different terminals, and a repeater detector for all of said different distribution channels.
References Cited (Backward Citations)
US1981999A
Cited
US3953727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |