Title:
DISTRIBUTED OPTICAL FIBER DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/002951
Kind Code:
A3
Abstract:
A distributed elongated optica! fiber detection system is provided, having at least one sensitive region, and being capable of detecting the occurrence and locations) of one or more events along its length that cause one or more perturbations in the at least one sensitive region, in one embodiment of the invention, the novel detection system includes, at its first end, an optica! signal source capable of launching a signal in a first signal mode through an optica! fiber waveguide comprising at least one sensitive region along its length, and configured for transmitting at least two signal modes therethrough, toward its second end, A refiecting device, capable of reflecting only signals in a second signs! mode, is positioned at the second end of the waveguide. An occurrence of at ieast one event in at least one sensitive region causes a perturbation in the waveguide sufficient to couple at least a portion of the energy of the forward traveling signal into a second signal mode, such that the signal in the second signal mode is reflected back toward the first end of the waveguide. A detector, capable of detecting at least one characteristic of a reflected signal in the second signal mode, is connected to the first end of the waveguide, such that when the at ieast one event occurs, and a reflected signal in the second signal mode is produced, the detector is capable of determining the quantity of one or more occurring events as well as a location of each of the events along the waveguide lengths, in another inventive embodiment, instead of a reflector, the detector is connected to the second end and detects the signai in the second mode directly.
Inventors:
KOPP VICTOR IL ICH (US)
SINGER JONATHAN (US)
NEUGROSCHL DANIEL (US)
SINGER JONATHAN (US)
NEUGROSCHL DANIEL (US)
Application Number:
PCT/US2009/049336
Publication Date:
March 11, 2010
Filing Date:
June 30, 2009
Export Citation:
Assignee:
CHIRAL PHOTONICS INC
International Classes:
G01M3/28; G01M3/08; G01M3/38
Foreign References:
| US20030174313A1 | 2003-09-18 | |||
| KR20060131942A | 2006-12-20 | |||
| JP2002048676A | 2002-02-15 | |||
| JP2007218720A | 2007-08-30 |
Attorney, Agent or Firm:
ETKIN, Edward (PC228 West End Ave,Suite, Brooklyn NY, US)
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