Potential-Scanning Sensing for Refractive Index Using an Indium Tin Oxide (ITO)-Coated Long-Period Fiber Grating (LPFG)

Okazaki, Takuya; Orii, Tatsuya; Tan, Shin-Yinn; Watanabe, Tomoaki; Taguchi, Akira; Rahman, Fadzilah Abd; Kuramitz, Hideki

doi:10.1080/00032719.2021.1951749

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…All-fiber refractive index (RI) sensors offer many advantages, such as insusceptibility to electromagnetic interference, light weight, small size, corrosion resistance, and high sensitivity; thus, they are widely used in biochemical sensing [1][2][3]. Recently, several types of fiber optic sensors based on fiber Bragg gratings [4,5], long period gratings (LPFG) [6,7], Fabry-Perot interferometers [8,9], fiber optic Sagnac interferometers [10,11], Michelson interferometers [12,13], and Mach-Zehnder interferometers (MZI) capable of RI detection have been proposed [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Temperature-insensitive high sensitivity refractive index sensor based on tapered no core fiber

Lu¹,

Liu²,

Ren³

et al. 2023

Meas. Sci. Technol.

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This study fabricated an ultra-high refractive index sensor based on tapered no-core fiber involving a simple inexpensive process. A splice section of no-core fiber in the middle of single mode fiber was tapered to small diameters. The sensor was sensitive to the surrounding refractive index with a large measurement range of 1.3330–1.4437. The refractive index sensitivity differed with varying wavelengths, with a value of 41916 nm/RIU at approximately 1550 nm. It yielded a low temperature sensitivity of 8.1 pm/°C that can be ignored compared with the refractive index sensitivity. The proposed fiber optic refractive index sensor can be used in many fields such as medicine and biochemical applications.

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