A new interferometric sensor with ring-feedback MZI

An interferometric sensor configuration is proposed. This configuration is modified from a conventional Mach-Zehnder interferometer (MZI) with a provision of a feedback path. Such scheme possesses large transmission intensity change with a small phase unbalance between two arms of MZI. This property...

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Bibliographic Details
Published inProceedings of IEEE Sensors 2003 (IEEE Cat. No.03CH37498) Vol. 1; pp. 569 - 572 Vol.1
Main Authors Chung-Yen Chao, Jay Guo, L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Arm
Optical feedback
Optical interferometry
Optical refraction
Optical scattering
Optical sensors
Optical surface waves
Optical variables control
Optical waveguides
Transmission line matrix methods
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Summary:An interferometric sensor configuration is proposed. This configuration is modified from a conventional Mach-Zehnder interferometer (MZI) with a provision of a feedback path. Such scheme possesses large transmission intensity change with a small phase unbalance between two arms of MZI. This property can greatly enhance the sensitivity by one to two order of magnitude compared with a traditional MZI-based sensor. The same configuration can be further enhanced in slope and detection range with introduction of small gain into the feedback path.
ISBN:0780381335
9780780381339
DOI:10.1109/ICSENS.2003.1279002