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Applied Optics

Applied Optics


  • Vol. 51, Iss. 12 — Apr. 20, 2012
  • pp: 2075–2080

Robust and environmental insensitive fiber optic Sagnac interferometer for microwave photonic applications

Erwin H. W. Chan  »View Author Affiliations

Applied Optics, Vol. 51, Issue 12, pp. 2075-2080 (2012)

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A technique that allows a fiber optic Sagnac interferometer based microwave photonic device to be implemented using non-polarization maintaining components inside the Sagnac loop while still obtaining an output that is insensitive to changes in environmental conditions is presented. It is based on inserting the non-polarization maintaining components in between a polarization beam combiner and a Faraday rotator mirror inside the loop. The technique also introduces a phase bias to the light propagating inside the loop. Experimental results demonstrate that the discretely and continuously tunable Sagnac loop based signal processors implemented using non-polarization maintaining components have an environmentally insensitive frequency response.

© 2012 Optical Society of America

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(260.5430) Physical optics : Polarization
(350.4010) Other areas of optics : Microwaves
(250.4745) Optoelectronics : Optical processing devices

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: January 10, 2012
Manuscript Accepted: February 25, 2012
Published: April 18, 2012

Erwin H. W. Chan, "Robust and environmental insensitive fiber optic Sagnac interferometer for microwave photonic applications," Appl. Opt. 51, 2075-2080 (2012)

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