Abstract

Fiber-optic single-point and quasi-distributed evanescent temperature sensors recoated with a blend of poly(methyl methacrylate) and poly(vinylidene fluoride) are proposed. Solid cladding enables the cons truction of small-size, low-cost, relatively wide-range and fast-response temperature sensors. The diameter of the sensor does not exceed the dimensions of the original optical fiber, while the response time of the sensor is $7.4\mathrm{ms}$. Different mass ratios of polymers in the blend enable fine tuning of the applied cladding’s refractive index. This allows the construction of sensors for different temperature ranges, while the application of all-silica graded-index multimode fibers enables the construction of quasi- distributed sensor systems with considerably reduced cross talk.

© 2008 Optical Society of America

Multimode all-fiber quasi-distributed refractometer sensor array and cross-talk mitigation

Marko Kezmah and Denis Ðonlagic
Appl. Opt. 46(19) 4081-4091 (2007)

High temperature fiber sensor with high sensitivity based on core diameter mismatch

Linh Viet Nguyen, Dusun Hwang, Sucbei Moon, Dae Seung Moon, and Youngjoo Chung
Opt. Express 16(15) 11369-11375 (2008)

All-fiber quasi-distributed polarimetric temperature sensor

Denis Donlagic and Miran Lesic
Opt. Express 14(22) 10245-10254 (2006)

Quasi-distributed refractometer using tilted Bragg gratings and time domain reflectometry

Christophe Caucheteur, Marc Wuilpart, Chengkun Chen, Patrice Mégret, and Jacques Albert
Opt. Express 16(22) 17882-17890 (2008)

Low-cost high-sensitivity strain and temperature sensing using graded-index multimode fibers

Yu Liu and Li Wei
Appl. Opt. 46(13) 2516-2519 (2007)