Hollow core fiber for secure optical communication
US-2024061169-A1 · Feb 22, 2024 · US
Fault-tolerant distributed fiber optic intrusion detection
US8947232B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8947232-B2 |
| Application number | US-51897107-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2007 |
| Priority date | Dec 29, 2006 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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An intrusion detection system for monitoring a premises includes at least one optical cable that houses at least one optical fiber and extends about the premises. Optical time domain reflectometry (OTDR) means is operably coupled to opposite first and second ends of the at least one optical fiber. The OTDR means includes first signal processing circuitry that analyzes the backscatter signal received via the first end of the at least one optical fiber in order to detect an intrusion of the premises, and second signal processing circuitry that analyzes the backscatter signal received via the second end of the at least one optical fiber in order to detect an intrusion of the premises. The redundancy of intrusions decisions made by the first and second signal processing circuitry can be verified. The system preferably further includes means for detecting a break in the at least one fiber, for identifying location of the break, for outputting to a user the location of the break, and for raising an alarm indicating the break.
First claim
Opening claim text (preview).
What is claimed is: 1. An intrusion detection system for monitoring a premises comprising: an optical cable that extends about the premises and has a first end opposite a second end, the optical cable comprising an optical fiber having a first end opposite a second end; and a highly coherent optical time domain reflectometry means, operably coupled to the first end and the second end of the optical cable, comprising: a highly coherent optical source to generate a first optical…
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Physics · mapped topic
- G08B13/186Primary
Physics · mapped topic
- G01L1/242Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8947232B2 cover?
- An intrusion detection system for monitoring a premises includes at least one optical cable that houses at least one optical fiber and extends about the premises. Optical time domain reflectometry (OTDR) means is operably coupled to opposite first and second ends of the at least one optical fiber. The OTDR means includes first signal processing circuitry that analyzes the backscatter signal rec…
- Who is the assignee on this patent?
- Strong Andrew, Hartog Arthur H, Schlumberger Technology Corp
- What technology area does this patent fall under?
- Primary CPC classification G08B13/186. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).