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Title: VCSEL fault location apparatus and method

Abstract

An apparatus for locating a fault within an optical fiber is disclosed. The apparatus, which can be formed as a part of a fiber-optic transmitter or as a stand-alone instrument, utilizes a vertical-cavity surface-emitting laser (VCSEL) to generate a test pulse of light which is coupled into an optical fiber under test. The VCSEL is subsequently reconfigured by changing a bias voltage thereto and is used as a resonant-cavity photodetector (RCPD) to detect a portion of the test light pulse which is reflected or scattered from any fault within the optical fiber. A time interval .DELTA.t between an instant in time when the test light pulse is generated and the time the reflected or scattered portion is detected can then be used to determine the location of the fault within the optical fiber.

Inventors:
 [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
909401
Patent Number(s):
7218388
Application Number:
11/001,235
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Keeler, Gordon A, and Serkland, Darwin K. VCSEL fault location apparatus and method. United States: N. p., 2007. Web.
Keeler, Gordon A, & Serkland, Darwin K. VCSEL fault location apparatus and method. United States.
Keeler, Gordon A, and Serkland, Darwin K. Tue . "VCSEL fault location apparatus and method". United States. https://www.osti.gov/servlets/purl/909401.
@article{osti_909401,
title = {VCSEL fault location apparatus and method},
author = {Keeler, Gordon A and Serkland, Darwin K},
abstractNote = {An apparatus for locating a fault within an optical fiber is disclosed. The apparatus, which can be formed as a part of a fiber-optic transmitter or as a stand-alone instrument, utilizes a vertical-cavity surface-emitting laser (VCSEL) to generate a test pulse of light which is coupled into an optical fiber under test. The VCSEL is subsequently reconfigured by changing a bias voltage thereto and is used as a resonant-cavity photodetector (RCPD) to detect a portion of the test light pulse which is reflected or scattered from any fault within the optical fiber. A time interval .DELTA.t between an instant in time when the test light pulse is generated and the time the reflected or scattered portion is detected can then be used to determine the location of the fault within the optical fiber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {5}
}

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Works referenced in this record:

Dual-purpose VCSELs for short-haul bidirectional communication links
journal, December 1999


In-situ OTDR measurements for single-mode optical networks with a standard VCSEL
conference, January 2004


Fiber waveguides: a novel technique for investigating attenuation characteristics
journal, January 1976


Monolithic integration of vertical-cavity surface-emitting lasers and wavelength-shifted resonant-cavity photodetectors
conference, January 2001


A simple smart pixel based on a double VCSEL for free space optical interconnects
journal, December 2002


Photon Probe-An Optical-Fiber Time-Domain Reflectometer
journal, March 1977


RCE photodetectors based on VCSEL structures
journal, October 1999


High-density interleaved VCSEL-RCPD arrays for optical information processing
conference, April 2003