An optical phase amplification technique for interrogating fiber resonator sensors

We describe a technique for the effective amplification of small phase changes induced by cavity perturbations of a resonant fiber-optic sensor. The scheme utilizes an unbalanced two-beam "read-out" interferometer to monitor weak frequency shifts in a laser source locked to the resonant se...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 7; no. 2; pp. 209 - 211
Main Authors Koo, K.P., Kersey, A.D.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.02.1995
Institute of Electrical and Electronics Engineers
Subjects
Exact sciences and technology
Fiber lasers
Frequency
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Monitoring
Optical fiber sensors
Optical interferometry
Optical ring resonators
Optical sensors
Physics
Resonance
Sensor phenomena and characterization
Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
Stimulated emission
Optical fibers
Sensors
Ring resonator
Experimental study
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Summary:We describe a technique for the effective amplification of small phase changes induced by cavity perturbations of a resonant fiber-optic sensor. The scheme utilizes an unbalanced two-beam "read-out" interferometer to monitor weak frequency shifts in a laser source locked to the resonant sensor. Results are presented using a fiber ring resonator sensor and Mach-Zehnder read-out interferometer with a system phase gain factor of 43.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/68.345925