Fiber optic SPR sensor for refractive index and temperature measurement based on MMF-FBG-MMF structure

Hu, Tao; Zhao, Yong; Song, An-ning

doi:10.1016/j.snb.2016.06.119

Cited by 140 publications

(38 citation statements)

References 14 publications

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“…In chemical sensing, one sensor type that is frequently employed is the bulk refractive index (RI) sensor or refractometer for quantifying the concentration level of various aqueous solutions, such as sucrose, salt, glycerol, dimethyl sulfoxide (DMSO), methanol, aceto-nitrile, etc. 5 , in addition to measuring other parameters like temperature since the RI of a medium is generally temperature-dependent 6 – 10 . Further, the advent of the sol-gel technique has facilitated the synthesis of bespoke sensitized coatings that can be deposited on the surface of an optical fiber as a thin film in replacement of the cladding 11 – 13 .…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Modeling of Multimode Fiber Sensors for Refractive Index Measurement and Experimental Validation

Apriyanto

Ravet

Bernal

et al. 2018

Sci Rep

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We propose and develop a comprehensive model for estimating the refractive index (RI) response over three potential sensing zones in a multimode fiber. The model has been developed based on a combined ray optics, Gaussian beam, and wave optics analysis coupled to the consideration of the injected interrogating lightwave characteristics and validated experimentally through the realization of three sensors with different lengths of stripped cladding sections as the sensing region. The experimental results highly corroborate and validate the simulation output from the model for the three RI sensing zones. The sensors can be employed over a very wide dynamic RI range from 1.316 to over 1.608 at a wavelength of 1550 nm, with the best resolution of 2.2447 × 10−5 RI unit (RIU) obtained in Zone II for a 1-cm sensor length.

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Section: Introductionmentioning

confidence: 99%

Comprehensive Modeling of Multimode Fiber Sensors for Refractive Index Measurement and Experimental Validation

Apriyanto

Ravet

Bernal

et al. 2018

Sci Rep

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“…Several types of sensors that fulfil the mentioned requirements have been investigated, such as resonant micro-cavities [ 2 , 5 , 6 , 7 , 8 ], photonic crystals [ 9 , 10 , 11 , 12 , 13 , 14 ], ring resonators [ 15 , 16 , 17 ] and fiber-optic sensors, such as Fiber Bragg Gratings (FBG) and Long Period Gratings (LPG) [ 4 , 18 , 19 , 20 ], in general combined with optical spectral readout. Many architectures have been developed and tested: in [ 21 ], for instance, Li et al proposed a fiber-optic Fabry–Perot interferometer (FPI) based on a single-mode fiber ending with an open microcavity with the inner surfaces covered with gold films.…”

Section: Introductionmentioning

confidence: 99%

Spectral Optical Readout of Rectangular–Miniature Hollow Glass Tubing for Refractive Index Sensing

Rigamonti

Bello

Merlo

2018

Sensors

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For answering the growing demand of innovative micro-fluidic devices able to measure the refractive index of samples in extremely low volumes, this paper presents an overview of the performances of a micro-opto-fluidic sensing platform that employs rectangular, miniature hollow glass tubings. The operating principle is described by showing the analytical model of the tubing, obtained as superposition of different optical cavities, and the optical readout method based on spectral reflectivity detection. We have analyzed, in particular, the theoretical and experimental optical features of rectangular tubings with asymmetrical geometry, thus with channel depth larger than the thickness of the glass walls, though all of them in the range of a few tens of micrometers. The origins of the complex line-shape of the spectral response in reflection, due to the different cavities formed by the tubing flat walls and channel, have been investigated using a Fourier transform analysis. The implemented instrumental configuration, based on standard telecom fiberoptic components and a semiconductor broadband optical source emitting in the near infrared wavelength region centered at 1.55 µm, has allowed acquisition of reflectivity spectra for experimental verification of the expected theoretical behavior. We have achieved detection of refractive index variations related to the change of concentration of glucose-water solutions flowing through the tubing by monitoring the spectral shift of the optical resonances.

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“…Surface plasmon resonance (SPR) occurs when an incident light wave excites oscillations of free electrons at the boundary between two materials, which possess opposite signs of real parts of their dielectric functions (most typical examples are metal-dielectric interfaces). Multiparameter fiber-based SPR sensors are usually built in a way to remove part of the fiber's cladding locally, or using D-fibers, 153,154 by coupling light into the cladding 155,156 as shown in Fig. 44, by fiber tapering, or using photonics crystal fibers (PCF) 157 with the goal to allow for local access to the optical field propagating along the fiber.…”

Section: Multiparameter Sensors Based On Combinations Of Interferometmentioning

confidence: 99%

Multiparameter fiber-optic sensors: a review

2019

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Needs for sensor miniaturization, versatile sensing solutions, and improved measurements' performances in difficult operating environments have recently driven considerable research in optical fiber sensor for multiparameter measurements. Multiparameter sensors not only enable new sensors' functionalities, but can also improve achievable measurement performances for some frequently measured parameters considerably. This study provides a review of work in the field of miniature fiber-optic sensors that allows independent and simultaneous measurements of two or more different physical or chemical parameters. Sensor designs and corresponding signal processing schemes are reviewed and compared.

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Fiber optic SPR sensor for refractive index and temperature measurement based on MMF-FBG-MMF structure

Cited by 140 publications

References 14 publications

Comprehensive Modeling of Multimode Fiber Sensors for Refractive Index Measurement and Experimental Validation

Comprehensive Modeling of Multimode Fiber Sensors for Refractive Index Measurement and Experimental Validation

Spectral Optical Readout of Rectangular–Miniature Hollow Glass Tubing for Refractive Index Sensing

Multiparameter fiber-optic sensors: a review

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