Extremely High-Efficiency Coupling Method for Hollow-Core Photonic Crystal Fiber

Fan, Danyun; Jin, Zhiqiang; Wang, Guanghui; Xu, Fei; Lu, Yan‐qing; Hu, Dora Juan Juan; Wei, Lei; Shum, Ping; Zhang, Xuping

doi:10.1109/jphot.2017.2697969

Cited by 9 publications

(5 citation statements)

References 13 publications

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“…Furthermore, SMF and PCF can also be connected by inserting an etched SMF tip into the PCF. As per the current reports, this splicing method has a coupling efciency of more than 80% [52]. Also, freespace coupling, fber-to-fber coupling, etc.…”

Section: Fabrication Feasibilities and Potentialmentioning

confidence: 61%

Refractometric Sensing of Protein in Urine by the Photonic Crystal Fiber Biosensor in THz Regime

Rahman,

Mou,

Bhuiyan

et al. 2023

International Journal of Optics

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The presence of albumin in human urine is one of the confirmed early symptoms of kidney dysfunction. A precise urine protein identification process is very important to monitor the kidney’s proper functioning. To identify the presence of albumin in urine, a refractometric protein sensing approach in the photonic crystal fiber (PCF) environment has been introduced here. A PCF geometry with suspended cladding and a circular hollow core has been proposed and investigated in the terahertz (THz) spectrum for protein identification in the liquid samples. Three levels of albumin concentrations in urine (7–125 mg/dl, 250–500 mg/dl, and 1000 mg/dl) are considered to evaluate the sensing performances of the proposed PCF. The numerical investigations are performed on the COMSOL Multiphysics platform where the finite element method (FEM) figures out the numerical outcomes. The performances of the proposed PCF exhibit highly sensitive characteristics for albumin identification in the different albumin concentration levels of urine. The sensitivity shows more than 98.5% for all the tested concentration levels due to the strategic selection of geometrical parameters and proper optimization. Alongside, negligible confinement loss of 10−16 cm−1 is attained at the same operating point of 4.3 THz. Furthermore, dispersion profiles and practical implementation strategies are also investigated and discussed in detail.

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Section: Fabrication Feasibilities and Potentialmentioning

confidence: 61%

Refractometric Sensing of Protein in Urine by the Photonic Crystal Fiber Biosensor in THz Regime

Rahman,

Mou,

Bhuiyan

et al. 2023

International Journal of Optics

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“…To connect the capillary and the incident fiber (Fiber 1), there are two main methods: free space coupling and inserting coupling [73,74]. In the free space coupling configuration, as shown in Figure 13a, the incident laser is coupled by the convergence of the objective lens.…”

Section: Fabrication Methodsmentioning

confidence: 99%

Review on All-Fiber Online Raman Sensor with Hollow Core Microstructured Optical Fiber

Ding

et al. 2022

Photonics

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Raman spectroscopy is widely used for qualitative and quantitative analysis of trace components in scientific fields such as food safety monitoring, drug testing, environmental monitoring, etc. In addition to its demonstrated advantages of fast response, non-destructive, and non-polluting characteristics, fast online Raman detection is drawing growing attention for development. To achieve this desirable capability, hollow core optical fibers are employed as a common transmission channel for light and fluid in the Raman sensor. By enhancing the interaction process between light and matter, the detection sensitivity is improved. At the same time, the Raman spectroscopy signal light collection efficiency is significantly improved. This article summarizes enhancement techniques reported for Raman sensors, followed by a detailed review on fiber-based Raman sensor techniques including theoretical analyses, fabrication, and application based on hollow core photonic crystal fibers and capillary-based hollow core fibers. The prospects of using these fibers for Raman spectroscopy are discussed.

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“…Employing a technique known as splicing, it would be possible to properly couple the sensor with SMF-28. Splicing method that attaches the SMF and the PCF by inserting an etched SMF tip into the PCF has been reported to have an 84.5% coupling efficiency [ 79 ]. Using the Vytran FFS-2000 splicer and the filament fusion method, the SMF and PCF can be aligned using manual-mode translational and rotational alignment [ 80 ].…”

Section: Sensing Performancementioning

confidence: 99%

Design and analysis of a highly sensitive SPR based PCF biosensor with double step dual peak shift sensitivity

Khan¹,

Yeasir²,

Mehjabin³

et al. 2023

Heliyon

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Extremely High-Efficiency Coupling Method for Hollow-Core Photonic Crystal Fiber

Cited by 9 publications

References 13 publications

Refractometric Sensing of Protein in Urine by the Photonic Crystal Fiber Biosensor in THz Regime

Refractometric Sensing of Protein in Urine by the Photonic Crystal Fiber Biosensor in THz Regime

Review on All-Fiber Online Raman Sensor with Hollow Core Microstructured Optical Fiber

Design and analysis of a highly sensitive SPR based PCF biosensor with double step dual peak shift sensitivity

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