Microstructured Optical Fiber Sensors

Liu, Zhengyong; Tam, Hwa Yaw; Htein, Lin; Tse, Ming-Leung Vincent; Lu, Chao

doi:10.1109/jlt.2016.2605124

Cited by 40 publications

(14 citation statements)

References 105 publications

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“…By engineering the geometric structure of the MOFs with various structural parameters, a maximum sensitivity of 21,700 nm/RIU has been achieved [71]. In this line, several different configurations, namely, three-hole, multi-core, grapefruit, and higher-order asymmetric MOFs have been demonstrated [72][73][74][75][76][77][78][79].…”

Section: Specialty Fibersmentioning

confidence: 93%

Recent Advances in Plasmonic Sensor-Based Fiber Optic Probes for Biological Applications

et al. 2019

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The survey focuses on the most significant contributions in the field of fiber optic plasmonic sensors (FOPS) in recent years. FOPSs are plasmonic sensor-based fiber optic probes that use an optical field to measure the biological agents. Owing to their high sensitivity, high resolution, and low cost, FOPS turn out to be potential alternatives to conventional biological fiber optic sensors. FOPS use optical transduction mechanisms to enhance sensitivity and resolution. The optical transduction mechanisms of FOPS with different geometrical structures and the photonic properties of the geometries are discussed in detail. The studies of optical properties with a combination of suitable materials for testing the biosamples allow for diagnosing diseases in the medical field.

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Section: Specialty Fibersmentioning

confidence: 93%

Recent Advances in Plasmonic Sensor-Based Fiber Optic Probes for Biological Applications

et al. 2019

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“…B is the phase birefringence and L is the length of the PM-PCF. Figure 1(b) shows the measured reflection spectrum of the SI using a fiber length of 0.35 m. The fringe spacing obtained is ~9 nm, indicating that the group birefringence (G) of this fiber is ~7.5 × 10 −4 according to the relationship, Δλ = λ 2 /(G⋅L) [27].…”

Section: Fabrication and Principle Of The Si-based Accelerometermentioning

confidence: 95%

Novel accelerometer realized by a polarization-maintaining photonic crystal fiber for railway monitoring applications

Liu¹,

Htein²,

Gunawardena³

et al. 2019

Opt. Express

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In this paper, we present a novel accelerometer based on the Sagnac interferometer configuration using a polarization-maintaining photonic crystal fiber (PM-PCF), which has a sensitivity of ~8 pm/G, and a resonant frequency exceeding 2.5 kHz. The proposed accelerometer is capable of functioning with a constant sensitivity in a large frequency range from 0 to 1 kHz which is much wider than many FBG-based accelerometers. Experimental results obtained from a field test in railway monitoring, demonstrate a broader frequency range for the proposed accelerometer compared to that of the FBG based accelerometer and is comparable to the conventional piezoelectric sensor. The abrupt change in the acceleration measured by the sensor aids in locating any defect or crack present on the railway track. To the best of our knowledge, this is the first demonstration of an accelerometer based on a fiber interferometer aimed for the railway industry. The proposed accelerometer operating at high accelerations (>40 G) and capable of functioning at a broad frequency range, shows significant potential in being used in applications which require detection of strong and fast vibrations, especially in structural health monitoring of trains and railway tracks in real time.

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“…The resulting structure is in the micro scale, so that this type of fibres is named Microstructured Optical Fibres (MOFs) [ 42 , 43 , 44 ]. There are several distributions for the air holes: some of them confine the light through the fibre core, which is employed for high power signal guiding; on the contrary, other distributions force core modes to be coupled into the cladding ones, which is very useful for sensing applications [ 45 ]. There are three main types of MOFs: Hollow Core Fibres (HCF), Suspended Core Fibres (SCF) and Photonic Crystal Fibres (PFC), which are displayed in Figure 14 .…”

Section: Nano and Microstructured Materials For Sensingmentioning

confidence: 99%

Micro and Nanostructured Materials for the Development of Optical Fibre Sensors

Elosúa

Arregui

Villar

et al. 2017

Sensors

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The measurement of chemical and biomedical parameters can take advantage of the features exclusively offered by optical fibre: passive nature, electromagnetic immunity and chemical stability are some of the most relevant ones. The small dimensions of the fibre generally require that the sensing material be loaded into a supporting matrix whose morphology is adjusted at a nanometric scale. Thanks to the advances in nanotechnology new deposition methods have been developed: they allow reagents from different chemical nature to be embedded into films with a thickness always below a few microns that also show a relevant aspect ratio to ensure a high transduction interface. This review reveals some of the main techniques that are currently been employed to develop this kind of sensors, describing in detail both the resulting supporting matrices as well as the sensing materials used. The main objective is to offer a general view of the state of the art to expose the main challenges and chances that this technology is facing currently.

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Microstructured Optical Fiber Sensors

Cited by 40 publications

References 105 publications

Recent Advances in Plasmonic Sensor-Based Fiber Optic Probes for Biological Applications

Recent Advances in Plasmonic Sensor-Based Fiber Optic Probes for Biological Applications

Novel accelerometer realized by a polarization-maintaining photonic crystal fiber for railway monitoring applications

Micro and Nanostructured Materials for the Development of Optical Fibre Sensors

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