Refractive index sensor with asymmetrical fiber Mach–Zehnder interferometer based on concatenating single-mode abrupt taper and core-offset section

Yin, Guolu; Lou, Shuqin; Zou, Hui

doi:10.1016/j.optlastec.2012.06.032

Cited by 75 publications

(32 citation statements)

References 24 publications

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“…4(b) suggests good congruity between the two parameters with a correlation coefficient value of R 2 ¼ 0:9775. The sensitivity achieved is 1858.0 nm/RIU, which is considerably higher compared to previous studies [3], [8], [22] and comparable to [7] within the same range of RI.…”

Section: Characterization Of Tapered Fibermentioning

confidence: 42%

Sensitive and Specific Protein Sensing Using Single-Mode Tapered Fiber Immobilized With Biorecognition Molecules

et al. 2015

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We examine and demonstrate a biosensor using single-mode tapered fiber that has been immobilized with biorecognition molecules to sense targeted proteins. Interaction of evanescent waves with the external medium surrounding the tapered region produces an interferometric-patterned spectrum, which shifts correspondingly to any changes of refractive index (RI) in the external medium. The proposed setup managed to obtain an RI sensitivity and concentration sensitivity of 2526.8 nm/RIU and 20.368 nm=M, respectively, which, to our knowledge, is highly sensitive when compared with previous studies. The dynamic performance, good specificity, and high sensitivity of the proposed method highlight an immensely beneficial choice for immunological diagnostics.

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Section: Characterization Of Tapered Fibermentioning

confidence: 42%

Sensitive and Specific Protein Sensing Using Single-Mode Tapered Fiber Immobilized With Biorecognition Molecules

et al. 2015

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“…Combinations of these microstructures are able to achieve the fiber-optic interferometric sensors as well. Abrupt fiber taper has been concatenated with FBG [277], LPG [278], offset splicing [279,280], and laser micro-machined spot [281]. In [277], a FBG was inscribed in an abrupt taper.…”

Section: Hybrid Micro-structured Devicesmentioning

confidence: 99%

“…In [279], the combined abrupt taper and offset splicing between two SMFs were used for the simultaneous axial strain and temperature measurement. RI sensing was also realized in a similar structure reported in [280]. In [281], the abrupt taper was combined with a micro-machined spot fabricated by an fs laser.…”

Section: Hybrid Micro-structured Devicesmentioning

confidence: 99%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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Recent developments in fiber-optic sensing have involved booming research in the design and manufacturing of novel micro-structured optical fiber devices. From the conventional tapered fiber architectures to the novel micro-machined devices by advanced laser systems, thousands of micro-structured fiber-optic sensors have been proposed and fabricated for applications in measuring temperature, strain, refractive index (RI), electric current, displacement, bending, acceleration, force, rotation, acoustic, and magnetic field. The renowned and unparalleled merits of sensors-based micro-machined optical fibers including small footprint, light weight, immunity to electromagnetic interferences, durability to harsh environment, capability of remote control, and flexibility of directly embedding into the structured system have placed them in highly demand for practical use in diverse industries. With the rapid advancement in micro-technology, micro-structured fiber sensors have benefitted from the trends of possessing high performance, versatilities and spatial miniaturization. Here, we comprehensively review the recent progress in the micro-structured fiber-optic sensors with a variety of architectures regarding their fabrications, waveguide properties and sensing applications.

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“…The mth resonant wavelength λ m in the transmission spectrum should satisfy the phase condition below [12], [14], [15], [27] …”

Section: Resonant Excitation Of Wgms In Amentioning

confidence: 99%

High-Sensitivity Temperature Sensor Based on a Coated Single-Mode Fiber Loop

Liao

Yang

et al. 2015

J. Lightwave Technol.

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We demonstrate a simple, robust, and highly sensitive temperature sensor based on the resonant excitation of whispering gallery modes in a coated single-mode fiber (SMF) loop that was created by means of bending a standard coated SMF into a loop with a radius of 5 mm. Clear interference fringes were observed in the transmission spectrum of the coated-SMF loop. The resonant wavelength exhibits a linear temperature response at the temperature range from −60°to 10°C, and a quadratic temperature response at the temperature range from 10°to 140°C. Moreover, the coated-SMF loop exhibits an ultrahigh sensitivity of up to −5.22 nm/°C at 120°C, and the sensitivity (i.e., −4.01 nm/°C at 80°C) is two orders of magnitude higher than that of an uncoated-SMF loop (i.e., 0.04 nm/°C at 80°C). Hence, such a coated-SMF loop could be used to develop a temperature sensor with a large measurement range from −60°to 140°C.Index Terms-Bending loss, modal interferometer, optical fiber sensors, whispering gallery mode (WGM).

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Refractive index sensor with asymmetrical fiber Mach–Zehnder interferometer based on concatenating single-mode abrupt taper and core-offset section

Cited by 75 publications

References 24 publications

Sensitive and Specific Protein Sensing Using Single-Mode Tapered Fiber Immobilized With Biorecognition Molecules

Sensitive and Specific Protein Sensing Using Single-Mode Tapered Fiber Immobilized With Biorecognition Molecules

Recent Developments in Micro-Structured Fiber Optic Sensors

High-Sensitivity Temperature Sensor Based on a Coated Single-Mode Fiber Loop

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