Design and analysis of birefringent SPR based PCF biosensor with ultra-high sensitivity and low loss

This study presents an investigation on the performance of the sensitivity of a dual spidershaped surface plasmon resonance (SPR)-based photonic crystal fibre (PCF) refractive index sensor having unique design specifications. To evaluate the fibre guiding properties, Finite Element Method is used for utilising the monetarily accessible COMSOL Multiphysics version 5.3a. A gold layer has been used as the plasmonic material surrounding the fibre to ensure chemical stability, and a single fine coating of TiO 2 supported the improvement of gold attachment with the fibre. The structural air holes' design arrangement inside the PCF gives an enhanced sensitivity performance. The proposed PCF-SPR gives extremely reduced confinement losses. Numerous precise investigations on the fibre parameters show the highest amplitude sensitivity of 4233 RIU −1 in detecting the scope of the refractive index (RI) 1.32-1.41. 2.36 � 10 −6 and 1.18 � 10 −5 and are achieved as amplitude resolution and wavelength resolution, respectively. The highest confinement loss found for this sensor is recorded to be 6.22 dB/cm. The RI sensor can lead to the exact identification of organic chemicals and biological analytes for the proposed design specifications, providing good sensitivity with significantly reduced confinement loss.

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“…The amplitude sensitivity (AS) of the sensor is estimated by using the following equation [41]:

{S}_{A}=-\frac{1}{\alpha \left(\lambda ,{\eta }_{a}\right)}\frac{\partial \alpha \left(\lambda ,{\eta }_{a}\right)}{\partial {\eta }_{a}}\,\left({\mathrm{R}\mathrm{I}\mathrm{U}}^{-1}\right)

where ∂α ( λ , η a ) denotes the variation in confinement loss and α ( λ , η a ) denotes confinement loss.…”

Section: Results Analysis and Discussionmentioning

confidence: 99%

Design of a dual spider‐shaped surface plasmon resonance‐based refractometric sensor with high amplitude sensitivity

Khan

Mehjabin

Chowdhury

et al. 2022

IET Optoelectronics

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“…The energy received by the optical fiber probe can be attenuated substantially to even render it undetectable in practice. The minimum losses of the sensors and the corresponding resonance wavelengths 36–102 are calculated and shown in Fig. 10.…”

Section: Numerical Resultsmentioning

confidence: 99%

Detection of kerosene adulteration in automobile fuel by a low-loss surface plasmon resonance (SPR) chemical sensor

Yang

Shi

et al. 2022

Anal. Methods

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“…The proposed system has a wavelength sensitivity of 1000 and 3750 nm/RIU (refractive index unit), respectively, for two channels and which is suitable for the analysis of chemical and biochemical analytes, including POPs, with refractive indexes in the range of 1.30–1.40. Recently, Islam et al have reported the SPR biosensor with hexagonal lattice photonic crystal fiber (PCF) prepared with stable plasmonic material gold (Au) and a thin film of TiO 2 placed on the glass surface to allure the field from the core guided mode and enhance the adhesion of Au on the fiber [ 105 ]. Both x- and y-polarization planes were investigated and provided with high wavelength sensitivity of 16,000 and 17,000 nm/RIU, respectively, with the overall sensing RI range from 1.33 to 1.41, suitable for the detection of unknown biochemical analytes.…”

Section: Other Types Of Optical Sensors For Popsmentioning

confidence: 99%

Advances in Optical Sensors for Persistent Organic Pollutant Environmental Monitoring

Caroleo

Naitana

Zazzo

et al. 2022

Sensors

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Optical chemical sensors are widely applied in many fields of modern analytical practice, due to their simplicity in preparation and signal acquisition, low costs, and fast response time. Moreover, the construction of most modern optical sensors requires neither wire connections with the detector nor sophisticated and energy-consuming hardware, enabling wireless sensor development for a fast, in-field and online analysis. In this review, the last five years of progress (from 2017 to 2021) in the field of optical chemical sensors development for persistent organic pollutants (POPs) is provided. The operating mechanisms, the transduction principles and the types of sensing materials employed in single selective optical sensors and in multisensory systems are reviewed. The selected examples of optical sensors applications are reported to demonstrate the benefits and drawbacks of optical chemical sensor use for POPs assessment.

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Design and analysis of birefringent SPR based PCF biosensor with ultra-high sensitivity and low loss

Cited by 50 publications

References 45 publications

Design of a dual spider‐shaped surface plasmon resonance‐based refractometric sensor with high amplitude sensitivity

Design of a dual spider‐shaped surface plasmon resonance‐based refractometric sensor with high amplitude sensitivity

Detection of kerosene adulteration in automobile fuel by a low-loss surface plasmon resonance (SPR) chemical sensor

Advances in Optical Sensors for Persistent Organic Pollutant Environmental Monitoring

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