Single-Mode-Multimode-Single-Mode Optical Fiber Sensing Structure With Quasi-Two-Mode Fibers

This paper reviews some aspects of optical fiber sensors based on a single-mode (SM)-multimode (MM)-SM structure and reports on the realization of temperature sensors in which the MM section is made by a quasi-two mode fiber. Two different realizations are compared that rely on: 1) a bend-insensitiv...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2018-05, Vol.67 (5), p.1223-1229
Main Authors: Olivero, Massimo, Vallan, Alberto, Orta, Renato, Perrone, Guido
Format: Article
Language:English
Subjects:
Fiber optic communications
Fiber optics sensors
Optical communication
Optical fibers
Optical interferometry
Optical refraction
Optical sensors
Periodic structures
Sensor phenomena and characterization
Sensors
single-mode–multimode–single-mode (SMS)-fiber sensors
temperature monitoring
Temperature sensors
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Summary:This paper reviews some aspects of optical fiber sensors based on a single-mode (SM)-multimode (MM)-SM structure and reports on the realization of temperature sensors in which the MM section is made by a quasi-two mode fiber. Two different realizations are compared that rely on: 1) a bend-insensitive fiber operated in the second optical communication window and 2) an SM fiber at 2~\mu \text{m} operated in the third optical communication window. The performances of the sensors are compared with those of similar structures that exploit largely MM sections.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2017.2771998