Recent advances in photonic crystal fiber-based sensors for biomedical applications

Rachana, Maddala; Charles, Ipshitha; Swarnakar, Sandip; Krishna, Sabbi Vamshi; Kumar, Santosh

doi:10.1016/j.yofte.2022.103085

Cited by 34 publications

(5 citation statements)

References 84 publications

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“…The strain sensitivity of 2.57 pm/µN for the frequencies lying in the range of 1-3 Hz [76]. A double-core photonic crystal fiber-based sensor with interrogation based on low coherence interferometry was reported for temperature measurement [77,78].…”

Section: Interferometric Sensorsmentioning

confidence: 99%

Novel Wearable Optical Sensors for Vital Health Monitoring Systems—A Review

2023

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Wearable sensors are pioneering devices to monitor health issues that allow the constant monitoring of physical and biological parameters. The immunity towards electromagnetic interference, miniaturization, detection of nano-volumes, integration with fiber, high sensitivity, low cost, usable in harsh environments and corrosion-resistant have made optical wearable sensor an emerging sensing technology in the recent year. This review presents the progress made in the development of novel wearable optical sensors for vital health monitoring systems. The details of different substrates, sensing platforms, and biofluids used for the detection of target molecules are discussed in detail. Wearable technologies could increase the quality of health monitoring systems at a nominal cost and enable continuous and early disease diagnosis. Various optical sensing principles, including surface-enhanced Raman scattering, colorimetric, fluorescence, plasmonic, photoplethysmography, and interferometric-based sensors, are discussed in detail for health monitoring applications. The performance of optical wearable sensors utilizing two-dimensional materials is also discussed. Future challenges associated with the development of optical wearable sensors for point-of-care applications and clinical diagnosis have been thoroughly discussed.

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Section: Interferometric Sensorsmentioning

confidence: 99%

Novel Wearable Optical Sensors for Vital Health Monitoring Systems—A Review

2023

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“…Photonic Crystal Fibres (PCFs), recently, have been utilised in sensing applications, other than their common use in optical communication, imaging, and many more [1][2][3]. PCFs have been implemented to measure and detect temperature, chemicals, pressure, liquid, gas, and so on [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Unsafe food additive sensing through octagonal-core photonic crystal fibre sensor

2023

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To detect food additives, a simple photonic crystal fibre design based on an octagonal hole and hollow circular cladding holes in two layers has been introduced. The numerical study of the design is conducted by simulation in the COMSOL Multiphysics software with the infiltrated test analytes: saccharin, sorbitol, and butyl acetate, operating in the wavelength variation from 1.6 to 4.0 µm. The performance of the proposed sensor is determined by analysing the principal optical parameters: effective refractive index, power fraction, relative sensitivity, confinement loss, chromatic dispersion, propagation constant, V-parameter, spot size, and beam divergence. At the optimal wavelength of 2.0 µm, the sensor design depicts high relative sensitivities of 98.06% for saccharin, 97.05% for sorbitol, 95.81% for butyl acetate, and 3.82 × 10−23 dB/m for saccharin, 3.44 × 10−22 dB/m for sorbitol, and 1.81 × 10−21 dB/m for butyl acetate for confinement loss, which is extremely low. Hence, the proposed food additive sensor is suitable for actual sensing applications based on these obtained results.

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“…PCFs are silica or polymer microstructured waveguides with plenty of air holes positioned in the cladding area of the fiber [4]. In PCFs, light can be steered either by the photonic band gap (PBG) phenomena [5,6] or through the effective index mechanism connected to the modified total internal reflection (MTIR) [7,8]. The propagation characteristics of PCF can be fine-tuned, offering additional functions, by adding other gases, liquids, or solid materials into the air holes [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel 1x4 Two-Dimensional Demultiplexer Based on Multicore Photonic Crystal Fiber

Harrat,

Debbal,

Ouadah

2023

International Journal of Electronics and Telecommunications

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This work suggests a brand-new 1*4 two-dimensional demultiplexer design based on multicore photonic crystal fiber. Numerical models show that the optical signals can be separated in a photonic crystal fiber construction using optical signals with wavelengths of 0.85, 1.1, 1.19, and 1.35 µm injected on the center core and separated into four cores. The innovative design switches different air-hole positions using pure silica layers throughout the length of the fiber to regulate the direction of light transmission between layers.Wavelength demultiplexers are essential parts of optical systemic communications. They serve as a data distributor and can use a single input to produce multiple outputs. The background material is frequently natural silica, and air holes can be found anywhere throughout the length of the fiber as the low-index components.The simulation results showed that after a 6 mm light propagation, the four-channel demux can start to demultiplex.

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Recent advances in photonic crystal fiber-based sensors for biomedical applications

Cited by 34 publications

References 84 publications

Novel Wearable Optical Sensors for Vital Health Monitoring Systems—A Review

Novel Wearable Optical Sensors for Vital Health Monitoring Systems—A Review

Unsafe food additive sensing through octagonal-core photonic crystal fibre sensor

Design of a Novel 1x4 Two-Dimensional Demultiplexer Based on Multicore Photonic Crystal Fiber

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