scholarly journals A Highly Sensitive Refractive Index Sensor Based on a V-Shaped Photonic Crystal Fiber with a High Refractive Index Range

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3782
Author(s):  
Xin Yan ◽  
Rao Fu ◽  
Tonglei Cheng ◽  
Shuguang Li
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
High Refractive Index ◽  
Refractive Index Sensor ◽  
Chemical Production ◽  
Refractive Index Sensitivity ◽  
Crystal Fiber ◽  
Sensing Applications ◽  
Highly Sensitive

This paper proposes a highly sensitive surface plasmon resonance (SPR) refractive index sensor based on the photonic crystal fiber (PCF). The optical properties of the PCF are investigated by modulating the refractive index of a liquid analyte. The finite element method (FEM) is used to calculate and analyze the PCF structure. After optimization, the fiber can achieve high linearity of 0.9931 and an average refractive index sensitivity of up to 14,771.4 nm/RIU over a refractive index range from 1.47 to 1.52, with the maximum wavelength sensitivity of 18,000.5 nm/RIU. The proposed structure can be used in various sensing applications, including biological monitoring, environmental monitoring, and chemical production with the modification and analysis of the proposed structure.

scholarly journals Numerical investigation of a highly sensitive plasmonic refractive index sensor utilizing hexagonal lattice of photonic crystal fiber

2020 ◽  
Vol 18 ◽  
pp. 103313 ◽  
Author(s):  
Md. Mahabubur Rahman ◽  
Md. Aslam Molla ◽  
Alok Kumar Paul ◽  
Md.A. Based ◽  
Md. Masud Rana ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Numerical Investigation ◽  
Photonic Crystal Fiber ◽  
Hexagonal Lattice ◽  
Refractive Index Sensor ◽  
Crystal Fiber ◽  
Highly Sensitive

Numerical investigation of gold plated single-core photonic crystal fiber-based refractive index sensor

2021 ◽  
Author(s):  
Monika Kiroriwal ◽  
Poonam Singal
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Refractive Index Sensor ◽  
Geometrical Parameters ◽  
Refractive Index Sensitivity ◽  
Crystal Fiber ◽  
Simple Geometry ◽  
Bio Imaging ◽  
Index Sensitivity

Surface plasmon resonance (SPR)-based single-core photonic crystal fiber (PCF) biosensor is investigated with external gold coating. All the geometrical parameters such as a gold layer, an analyte layer, a lattice period and cladding air holes are optimized to enhance the sensing ability of the sensor by introducing the finite element method. The designed sensor is able to achieve the highest amplitude sensitivity (AS) of 2258.95 RIU[Formula: see text] with an acceptable refractive index sensitivity (RIS) of 6000 nm/RIU over the analyte refractive index (ARI) span of 1.31–1.40. This sensor can detect a slight index alteration in the sensing medium using a resolution of [Formula: see text] and a high figure of merit (FOM) of 79.01. With the enhanced modal behavior with simple geometry, the resulting sensor can be suitable for real-time monitoring in biological, biochemical and bio-imaging applications.

Highly sensitive miniature photonic crystal fiber refractive index sensor based on mode field excitation

2011 ◽  
Vol 36 (9) ◽  
pp. 1731 ◽  
Author(s):  
Wei Chang Wong ◽  
Chi Chiu Chan ◽  
Li Han Chen ◽  
Zhi Qiang Tou ◽  
Kam Chew Leong
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Refractive Index Sensor ◽  
Crystal Fiber ◽  
Mode Field ◽  
Highly Sensitive ◽  
Field Excitation

scholarly journals Refractive index sensor based on a solid-core photonic crystal fiber interferometer

2019 ◽  
Vol 15 (34) ◽  
pp. 99-105
Author(s):  
Nawras Ali Salman
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Electromagnetic Interference ◽  
General Structure ◽  
Pump Light ◽  
Refractive Index Sensor ◽  
Solid Core ◽  
Crystal Fiber ◽  
Sensing Applications

Photonic crystal fiber interferometers are widely used for sensing applications. In this work, solid core-Photonic crystal fiber based on Mach-Zehnder modal interferometer for sensing refractive index was presented. The general structure of sensor applied by splicing short lengths of PCF in both sides with conventional single mode fiber (SMF-28). To apply modal interferometer theory; collapsing technique based on fusion splicing used to excite higher order modes (LP01 and LP11). Laser diode (1550 nm) has been used as a pump light source. Where a high sensitive optical spectrum analyzer (OSA) was used to monitor and record the transmitted. The experimental work shows that the interference spectrum of Photonic crystal fiber interferometer exhibits good sensitivity to refractive index variations. The response of the PCFI is observed for a range of refractive index values from (1.33 to 1.38), the position of the interference peaks is found to be shifted to longer wavelength with refractive index increasing. A different length of PCFs (2, 3, 4) cm were used, and the maximum refractive index sensitivity of (7.5 pm / RIU) is achieved with a PCF length of 4 cm. This refractive index sensor has distinguished properties as that it small size, high sensitivity, fast response time, design flexibility, and immunity to electromagnetic interference.

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