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Title: Integrated optics reflectometer

An apparatus includes a laser source configured to output laser light at a target frequency, and a measurement unit configured to measure a deviation between an actual frequency outputted by the laser source at a current period of time and the target frequency of the laser source. The apparatus includes a feedback control unit configured to, based on the measured deviation between the actual and target frequencies, control the laser source to maintain a constant frequency of laser output from the laser source so that the frequency of laser light transmitted from the laser source is adjusted to the target frequency. The feedback control unit can control the laser source to maintain a linear rate of change in the frequency of its laser light output, and compensate for characteristics of the measurement unit utilized for frequency measurement. A method is provided for performing the feedback control of the laser source.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1341892
Assignee:
AXONOPTICS LLC (Harrisonburg, VA) CHO
Patent Number(s):
9,557,243
Application Number:
14/944,315
Resource Relation:
Patent File Date: 2015 Nov 18
Research Org:
AXONOPTICS LLC, Harrisonburg, VA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Works referenced in this record:

Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature
journal, August 2008

Electrocaloric Materials for Solid-State Refrigeration
journal, May 2009
  • Lu, Sheng-Guo; Zhang, Qiming
  • Advanced Materials, Vol. 21, Issue 19, p. 1983-1987
  • DOI: 10.1002/adma.200802902