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Title: Fiber optic security seal including plural Bragg gratings

Abstract

An optical security system enables the integrity of a container seal to be remotely interrogated. A plurality of Bragg gratings is written holographically into the core of at least one optical fiber placed about the container seal, where each Bragg grating has a predetermined location and a known frequency for reflecting incident light. A time domain reflectometer is provided with a variable frequency light output that corresponds to the reflecting frequencies of the Bragg gratings to output a signal that is functionally related to the location and reflecting frequency of each of the Bragg gratings. 2 figs.

Inventors:
Issue Date:
OSTI Identifier:
6903308
Patent Number(s):
5351324 A
Application Number:
PPN: US 8-120113
Assignee:
Univ. of California, Alameda, CA (United States)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Patent File Date: 10 Sep 1993
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; CONTAINERS; SECURITY SEALS; DESIGN; BRAGG REFLECTION; DIFFRACTION GRATINGS; HOLOGRAPHY; OPERATION; OPTICAL FIBERS; FIBERS; GRATINGS; PHYSICAL PROTECTION DEVICES; REFLECTION; SEALS; 055001* - Nuclear Fuels- Safeguards, Inspection, & Accountability- Technical Aspects

Citation Formats

Forman, P R. Fiber optic security seal including plural Bragg gratings. United States: N. p., 1994. Web.
Forman, P R. Fiber optic security seal including plural Bragg gratings. United States.
Forman, P R. Tue . "Fiber optic security seal including plural Bragg gratings". United States.
@article{osti_6903308,
title = {Fiber optic security seal including plural Bragg gratings},
author = {Forman, P R},
abstractNote = {An optical security system enables the integrity of a container seal to be remotely interrogated. A plurality of Bragg gratings is written holographically into the core of at least one optical fiber placed about the container seal, where each Bragg grating has a predetermined location and a known frequency for reflecting incident light. A time domain reflectometer is provided with a variable frequency light output that corresponds to the reflecting frequencies of the Bragg gratings to output a signal that is functionally related to the location and reflecting frequency of each of the Bragg gratings. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {9}
}