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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 9314–9323

Experimental demonstration of impedance match locking and control for coupled resonators

David S. Rabeling, Jong H. Chow, Malcolm B. Gray, and David E. McClelland  »View Author Affiliations


Optics Express, Vol. 18, Issue 9, pp. 9314-9323 (2010)
http://dx.doi.org/10.1364/OE.18.009314


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Abstract

We describe and verify the dynamic behavior of a novel technique to optimize and actively control the optical impedance matching condition of a coupled resonator system. The technique employs radio frequency modulation and demodulation to interrogate the reflection amplitude response of the coupled cavity system. The sign and magnitude of the demodulated signal is used in a closed loop feedback system which controls the coupling condition of a three-mirror resonator. This was done by actuating on the spacing between two of mirrors, effectively using the pair as a variable reflectivity compound mirror. We propose that this technique can be used for controlling the signal bandwidth of next-generation gravitational wave detectors, as well as optimizing circulating optical carrier power in the instrument.

© 2010 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.4555) Optical devices : Coupled resonators

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: March 3, 2010
Revised Manuscript: April 8, 2010
Manuscript Accepted: April 13, 2010
Published: April 20, 2010

Citation
David S. Rabeling, Jong H. Chow, Malcolm B. Gray, and David E. McClelland, "Experimental demonstration of impedance match locking and control for coupled resonators," Opt. Express 18, 9314-9323 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-9-9314


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References

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