Refractive index sensor based on SPR in symmetrically etched plastic optical fibers

Al-Qazwini, Yusser; Noor, A. S. M.; Al-Qazwini, Zaineb; Yaacob, Mohd Hanif; Harun, Sulaiman Wadi; Mahdi, Mohd Adzir

doi:10.1016/j.sna.2016.04.064

Cited by 52 publications

(9 citation statements)

References 19 publications

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“…However, the utilization of these thick core fibers and the elevated number of modes propagated produces wide resonances, which results in a worsening of the FWHM and the resolution of the devices. This can be overcome by reducing the core diameter of the fiber through etching or tapering the fiber . An easy technique that also enables to reduce FWHM by means of attenuating higher order modes as well as enhance evanescent field interaction consist of optical fiber bending, which can couple the propagating modes into the cladding when the optical fiber critical radius is exceeded .…”

Section: Refractometers Based On Thin‐film Resonancesmentioning

confidence: 99%

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

Urrutia

Villar

Zubiate

et al. 2019

Laser & Photonics Reviews

142

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Thanks to the peculiarities of optical fiber and its ability to be combined with nanotechnology, precise and accurate measurements of the changes in optical properties (i.e., refractive index) of the medium surrounding the fiber are becoming possible with a high degree of performance. Thus, optical fiber sensors (OFSs) are increasingly finding applications in biochemistry and biomedicine. Here, all types of optical fiber refractometers are covered, and they are classified into three main groups: interferometers, grating‐based structures, and resonance‐based structures (the resonance is induced by coating the optical fiber sensor with a thin film). The performance of these different structures is compared by means of the most common parameters: sensitivity, full width at half minimum or maximum, figure of merit, and quality factor. The aim here is to provide a reliable and easy‐to‐use tool to compare the performance of the most recent developments on fiber optic refractometers.

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Section: Refractometers Based On Thin‐film Resonancesmentioning

confidence: 99%

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

Urrutia

Villar

Zubiate

et al. 2019

Laser & Photonics Reviews

142

View full text Add to dashboard Cite

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“…In recent years, the POFs-based SPR sensors have attracted more and more attention. Many POFs-based SPR sensors have been reported [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ], for example, Jing et al developed a side-polished macrobending POF-based SPR for RI sensing [ 22 ]. A. Ariadny et al presented a U-shape POF-based SPR sensor for E. coli bacteria detection [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

An Enhanced Plastic Optical Fiber-Based Surface Plasmon Resonance Sensor with a Double-Sided Polished Structure

Liu

Deng

Zheng

et al. 2021

Sensors

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An enhanced plastic optical fiber (POF)-based surface plasmon resonance (SPR) sensor is proposed by employing a double-sided polished structure. The sensor is fabricated by polishing two sides of the POF symmetrically along with the fiber axis, and a layer of Au film is deposited on each side of the polished region. The SPR can be excited on both polished surfaces with Au film coating, and the number of light reflections will be increased by using this structure. The simulation and experimental results show that the proposed sensor has an enhanced SPR effect. The visibility and full width at half maximum (FWHM) of spectrum can be improved for the high measured refractive index (RI). A sensitivity of 4284.8 nm/RIU is obtained for the double-sided POF-based SPR sensor when the measured liquid RI is 1.42. The proposed SPR sensor is easy fabrication and low cost, which can provide a larger measurement range and action area to the measured samples, and it has potential application prospects in the oil industry and biochemical sensing fields.

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“…In recent years, plastic optical fibers (POFs) have been well known for their successful use as optical fiber sensors (OFS) [1,2,3]. These fibers share some attributes with glass optical fibers (GOF), such as immunity to electromagnetic fields, small size and weight, but also allow the production of low-cost sensing systems.…”

Section: Introductionmentioning

confidence: 99%

Refractive Index Sensing with D-Shaped Plastic Optical Fibers for Chemical and Biochemical Applications

Sequeira

Duarte

Bilro

et al. 2016

Sensors

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We report the optimization of the length of a D-shaped plastic optical fiber (POF) sensor for refractive index (RI) sensing from a numerical and experimental point of view. The sensing principle is based on total internal reflection (TIR). POFs with 1 mm in diameter were embedded in grooves, realized in planar supports with different lengths, and polished to remove the cladding and part of the core. All D-shaped POF sensors were tested using aqueous medium with different refractive indices (from 1.332 to 1.471) through intensity-based configuration. Results showed two different responses. Considering the refractive index (RI) range (1.33–1.39), the sensitivity and the resolution of the sensor were strongly dependent on the sensing region length. The highest sensitivity (resolution of 6.48 × 10−3 refractive index units, RIU) was obtained with 6 cm sensing length. In the RI range (1.41–1.47), the length of the sensing region was not a critical aspect to obtain the best resolution. These results enable the application of this optical platform for chemical and biochemical evanescent field sensing. The sensor production procedure is very simple, fast, and low-cost.

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Refractive index sensor based on SPR in symmetrically etched plastic optical fibers

Cited by 52 publications

References 19 publications

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

A Comprehensive Review of Optical Fiber Refractometers: Toward a Standard Comparative Criterion

An Enhanced Plastic Optical Fiber-Based Surface Plasmon Resonance Sensor with a Double-Sided Polished Structure

Refractive Index Sensing with D-Shaped Plastic Optical Fibers for Chemical and Biochemical Applications

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