FR2520114B1 - - Google Patents
Info
- Publication number
- FR2520114B1 FR2520114B1 FR8200655A FR8200655A FR2520114B1 FR 2520114 B1 FR2520114 B1 FR 2520114B1 FR 8200655 A FR8200655 A FR 8200655A FR 8200655 A FR8200655 A FR 8200655A FR 2520114 B1 FR2520114 B1 FR 2520114B1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
- G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/39—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is projected from both sides of the fiber or waveguide end-face
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
- G08B13/186—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using light guides, e.g. optical fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Burglar Alarm Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8200655A FR2520114A1 (fr) | 1982-01-18 | 1982-01-18 | Dispositif de localisation d'une cassure d'une fibre optique et utilisation d'un tel dispositif |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8200655A FR2520114A1 (fr) | 1982-01-18 | 1982-01-18 | Dispositif de localisation d'une cassure d'une fibre optique et utilisation d'un tel dispositif |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2520114A1 FR2520114A1 (fr) | 1983-07-22 |
FR2520114B1 true FR2520114B1 (ko) | 1984-08-24 |
Family
ID=9270052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8200655A Granted FR2520114A1 (fr) | 1982-01-18 | 1982-01-18 | Dispositif de localisation d'une cassure d'une fibre optique et utilisation d'un tel dispositif |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2520114A1 (ko) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8520827D0 (en) * | 1985-08-20 | 1985-09-25 | York Ventures & Special Optica | Fibre-optic sensing devices |
GB8709900D0 (en) * | 1987-04-27 | 1987-08-05 | British Telecomm | Surveillance system |
GB8710833D0 (en) * | 1987-05-07 | 1987-06-10 | Porous Plastics Ltd | Microwave heating |
JPH01141331A (ja) * | 1987-11-27 | 1989-06-02 | Anritsu Corp | 光パルス試験器 |
AUPQ012699A0 (en) * | 1999-05-03 | 1999-05-27 | Future Fibre Technologies Pty Ltd | Intrinsic securing of fibre optic communication links |
GB2409942A (en) * | 2004-01-12 | 2005-07-13 | Radiodetection Ltd | Optical time domain reflectometry with non-intrusive modulators |
US9784642B2 (en) | 2008-09-23 | 2017-10-10 | Onesubsea Ip Uk Limited | Redundant optical fiber system and method for remotely monitoring the condition of a pipeline |
CN101441129B (zh) * | 2008-12-25 | 2010-06-09 | 哈尔滨工程大学 | 基于温度实验的光纤环性能测评*** |
GB201020827D0 (en) | 2010-12-08 | 2011-01-19 | Fotech Solutions Ltd | Distrubuted optical fibre sensor |
GB2490179B (en) * | 2011-06-01 | 2013-04-24 | Detection Technologies Ltd | Security system, controller for a security system, transducing cable for a security system and method for detecting a disturbance and determining its location |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1518390A (en) * | 1976-03-30 | 1978-07-19 | Farmaceutici Italia | Doxorubicin thioesters |
GB1497995A (en) * | 1976-04-13 | 1978-01-12 | Standard Telephones Cables Ltd | Fibre optic acoustic monitoring arrangement |
FR2393287A1 (fr) * | 1977-05-31 | 1978-12-29 | Cables De Lyon Geoffroy Delore | Echometre pour la localisation de defauts affectant les conducteurs de lumiere |
-
1982
- 1982-01-18 FR FR8200655A patent/FR2520114A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2520114A1 (fr) | 1983-07-22 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |