Quasi-D-Shaped Fiber Optic Plasmonic Biosensor for High-Index Analyte Detection

Monfared, Yashar E.; Hajati, Morteza; Liang, Chao; Yang, Shunchuan; Qasymeh, Montasir

doi:10.1109/jsen.2019.2945003

Cited by 35 publications

(32 citation statements)

References 19 publications

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“…Photonic crystal fibers (PCFs) are a flexible and adjustable class of optical fibers that open the door to new possibilities in nonlinear optics [36], optical sensing [37], and optical imaging [38]. As demonstrated in Figure 12, PCFs have a core that is encircled by a periodic array of air-holes that works as a cladding of the fiber [11].…”

Section: Plasmonic Biosensors Based On Photonic Crystal Fibersmentioning

confidence: 99%

“…As demonstrated in Figure 12, PCFs have a core that is encircled by a periodic array of air-holes that works as a cladding of the fiber [11]. PCFs offer numerous unique features such as the possibility of realizing ultra-flattened dispersion, endlessly single mode operation, low propagation losses, and controllable nonlinearity [36][37][38].…”

Section: Plasmonic Biosensors Based On Photonic Crystal Fibersmentioning

confidence: 99%

“…In D-shaped PCF plasmonic (or SPR based) biosensors, the interaction between fiber mode at the core of the fiber and the plasmonic modes at the surface of nanofilms/nanoparticles depending on the analyte RI can be used to detect an unknown analyte (or the change in analyte physical/chemical characteristics) [37,40]. The air holes of PCF can help with providing flexibility for phase matching (index matching) between fiber mode and plasmonic mode [37,40]. D-shaped PCF biosensors are one of the most popular design concepts in RI sensing as it can provide a great platform for using different plasmonic materials, and detection of analytes with low or high RIs [37,41].…”

Section: D-shaped Pcf-based Plasmonic Biosensorsmentioning

confidence: 99%

“…The air holes of PCF can help with providing flexibility for phase matching (index matching) between fiber mode and plasmonic mode [37,40]. D-shaped PCF biosensors are one of the most popular design concepts in RI sensing as it can provide a great platform for using different plasmonic materials, and detection of analytes with low or high RIs [37,41]. The cross-sectional view of a D-shaped PCF-based plasmonic biosensor is illustrated in Figure 13.…”

Section: D-shaped Pcf-based Plasmonic Biosensorsmentioning

confidence: 99%

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Overview of Recent Advances in the Design of Plasmonic Fiber-Optic Biosensors

Monfared

2020

Biosensors

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Plasmonic fiber-optic biosensors combine the flexibility and compactness of optical fibers and high sensitivity of nanomaterials to their surrounding medium, to detect biological species such as cells, proteins, and DNA. Due to their small size, accuracy, low cost, and possibility of remote and distributed sensing, plasmonic fiber-optic biosensors are promising alternatives to traditional methods for biomolecule detection, and can result in significant advances in clinical diagnostics, drug discovery, food process control, disease, and environmental monitoring. In this review article, we overview the key plasmonic fiber-optic biosensing design concepts, including geometries based on conventional optical fibers like unclad, side-polished, tapered, and U-shaped fiber designs, and geometries based on specialty optical fibers, such as photonic crystal fibers and tilted fiber Bragg gratings. The review will be of benefit to both engineers in the field of optical fiber technology and scientists in the fields of biosensing.

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Section: Plasmonic Biosensors Based On Photonic Crystal Fibersmentioning

confidence: 99%

Section: Plasmonic Biosensors Based On Photonic Crystal Fibersmentioning

confidence: 99%

Section: D-shaped Pcf-based Plasmonic Biosensorsmentioning

confidence: 99%

Section: D-shaped Pcf-based Plasmonic Biosensorsmentioning

confidence: 99%

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Overview of Recent Advances in the Design of Plasmonic Fiber-Optic Biosensors

Monfared

2020

Biosensors

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“…The SC can be further improved if the chosen frequency is closer to ω LP and ω EP . Different from our one-dimensional PC of the multilayer type, PC fibers can also utilized for highly sensitive sensors for temperature sensing application via a Sagnac interferometer [53] or for detection of high refractive index liquid analytes via surface plasmon resonance [54]. The incident angle was selected as 20 • and the purpose was to take a specific incident angle as an example to demonstrate that EPs and CPA-LP can be induced in the parameter space when a TM wave is obliquely incident into the non-Hermitian PCs.…”

Section: Applications and Giant Gh Shiftmentioning

confidence: 99%

Exceptional Points in Non-Hermitian Photonic Crystals Incorporated With a Defect

et al. 2020

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We explored exceptional points (EPs) in one dimensional non-Hermitian photonic crystals incorporated with a defect. The defect was asymmetric with respect to the center. Two EPs could be derived by modulating the normalized frequency and the gain-loss coefficient of defect. The reflection coefficient complex phase changed dramatically around EPs, and the change in complex phase was π at EPs. The electric field of EPs was mainly restricted to the defect, which can induce a giant Goos–Hänchen (GH) shift. Moreover, we found a coherent perfect absorption-laser point (CPA-LP) in the structure. A giant GH shift also existed around the CPA-LP. The study may have found applications in highly sensitive sensors.

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