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Optics Letters

Optics Letters


  • Vol. 36, Iss. 6 — Mar. 15, 2011
  • pp: 933–935

Balancing interferometers with slow-light elements

Alireza Marandi, Brian T. Lantz, and Robert L. Byer  »View Author Affiliations

Optics Letters, Vol. 36, Issue 6, pp. 933-935 (2011)

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In this Letter we show that interferometers with unbalanced arm lengths can be balanced using optical elements with appropriate group delays. For matched group delays of the arms, the balanced interferometer becomes insensitive to the frequency noise of the source. For experimental illustration, a ring resonator is employed as a slow-light element to compensate the arm-length mismatch of a Mach–Zehnder interferometer. An arm-length mismatch of 9.4 m is compensated by a ring resonator with a finesse of 70 and a perimeter of 42 cm .

© 2011 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(260.2030) Physical optics : Dispersion

ToC Category:
Physical Optics

Original Manuscript: December 7, 2010
Revised Manuscript: February 9, 2011
Manuscript Accepted: February 10, 2011
Published: March 10, 2011

Alireza Marandi, Brian T. Lantz, and Robert L. Byer, "Balancing interferometers with slow-light elements," Opt. Lett. 36, 933-935 (2011)

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