scholarly journals Dual scaled approach SPR-based PCF RI sensor with ultra-low loss

2021 ◽  
Vol 2070 (1) ◽  
pp. 012109
Author(s):  
Samiha Nuzhat ◽  
Sanjida Sultana ◽  
Faiyaz Bin Hassan ◽  
Shovasis Kumar Biswas ◽  
Mohona Das Gupta ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Hexagonal Lattice ◽  
Confinement Loss ◽  
The Finite Element Method ◽  
Low Loss ◽  
Plasmonic Material ◽  
Crystal Fiber ◽  
Spr Sensor ◽  
Wavelength Sensitivity ◽  
Hexagonal Arrangement

Abstract We demonstrate an ultra-low loss photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR)in this paper. In this refractive index (RI) sensor, we explored hexagonal-arrangement of airholes and employed only two different sizes of it. The formation of airholes makes the confinement loss (CL) surprisingly low. The maximum CL is as low as 10.71 and 28.58 dB/cm for x and y-pol modes, respectively within a range of refractive indices 1.33-1.40. The maximum gained amplitude sensitivity is -1212 RIU−1 and -2430 RIU−1, and the maximum figure of merit is as high as 583 and 467 respectively for x and y-polarization (pol) modes respectively. In addition to that, we got a maximum wavelength sensitivity, Sw of 14,000nm/RIU for both x and y-pol modes with a minimum sensor resolution of 7.143x10−6. Gold is preferred over other materials as the plasmonic material for its inert behaviour and higher chemical stability. The analysis was carried out using the finite element method (FEM). This sensor, with its elegant configuration, fabrication feasibility, ultra-low loss, stands out to be an effective and eminent prospect in the current burgeoning SPR sensor realm and also prompts further creative exploration in its hexagonal lattice arrangements.

scholarly journals Plasmonic Sensor based on Microstructure PCF: Performance Analysis with Outside Detecting Approach

2021 ◽  
Author(s):  
Md. Biplob Hossain ◽  
Md. Nazmus Sakib ◽  
Md. Sanwar Hossain
Keyword(s):  
Figure Of Merit ◽  
High Sensitivity ◽  
The Finite Element Method ◽  
Plasmonic Sensor ◽  
Crystal Fiber ◽  
Polynomial Fit ◽  
Wavelength Sensitivity ◽  
High Figure ◽  
Performance Ability ◽  
The Cost

Abstract In this microarticle, we design a microstructure photonic crystal fiber (PCF) based external sensing surface plasmon resonance (SPR) sensor. The performance of the design is numerically evaluated incorporating the finite element method (FEM) with Perfectly Matched Layer (PML) boundary condition of scattering case. Modal analysis is performed using finer mesh anlaysis. At the optimized thickness (40nm) of chemically stable gold(Au) layer, the ever been maximum reported wavelength sensitivity (WS) and standard amplitude sensitivity (AS) are to 75,000 nm per RIU and 480 per RIU correspondingly. The sensor also exposed high polynomial fit (𝐑𝟐 = 𝟎. 𝟗𝟗) as well as high figure of merit (FoM) of 280.77 per RIU. Since very much high sensitivity, high detecting range and figure of merit, lowing the cost of fabrication, the proposed design can be a pleasant competitor in detection of the analyte refractive index (RI). At the last, to prove performance ability of our designed sensor all the performance parameter calculated results compare with the existing sensors.

Design and Characterization of an Ultra Low Loss, Dispersion-Flattened Slotted Photonic Crystal Fiber for Terahertz Application

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Mohammad Rakibul Islam ◽  
Md. Arif Hossain ◽  
Syed Iftekhar Ali ◽  
Jakeya Sultana ◽  
Md. Saiful Islam
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Single Mode ◽  
Confinement Loss ◽  
Terahertz Frequency ◽  
Frequency Range ◽  
Low Loss ◽  
Material Loss ◽  
Crystal Fiber

AbstractA novel photonic crystal fiber (PCF) based on TOPAS, consisting only rectangular slots is presented and analyzed in this paper. The PCF promises not only an extremely low effective material loss (EML) but also a flattened dispersion over a broad frequency range. The modal characteristics of the proposed fiber have been thoroughly investigated using finite element method. The fiber confirms a low EML of 0.009 to 0.01 cm−1 in the frequency range of 0.77–1.05 THz and a flattened dispersion of 0.22±0.01 ps/THz/cm. Besides, some other significant characteristics like birefringence, single mode operation and confinement loss have also been inspected. The simplicity of the fiber makes it easily realizable using the existing fabrication technologies. Thus it is anticipated that the new fiber has the potential to ensure polarization preserving transmission of terahertz signals and to serve as an efficient medium in the terahertz frequency range.

scholarly journals Efficient Photonic Crystal Fiber Design for Higher OAM Modes with Low Loss Towards Next Generation THz Communication

2021 ◽  
Author(s):  
Bibhatsu Kuiri ◽  
Bubai Dutta ◽  
Nilanjana Sarkar ◽  
Saikat Santra ◽  
Paulomi Mandal ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Confinement Loss ◽  
Solid Core ◽  
Low Loss ◽  
Crystal Fiber ◽  
Fiber Design ◽  
Effective Mode Area ◽  
Mode Purity ◽  
Mode Area

Abstract A newer and efficient solid core with air holes and ring based circular photonic crystal fiber (C-PCF) design is proposed, developed, and studied. The C-PCF structure with a ring core and three layers of air holes is developed to communicate terahertz frequency of the range of 1 THz to 3 THz. Finite element method (FEM) is used to optimize the position, shape and dimensions of air holes and refractive index (RI) of material for the proposed PCF design and check the efficiency to support different orbital angular momentum (OAM) modes for communication. Our novel designed C-PCF supports multiple stable modes with mode purity above 0.9. Confinement loss is in the range of 10-12 dB/cm, highest effective mode area in the order of 1 mm2 is achieved in the investigated study for 3 THz transmission. The study observes that the performance of PCF is strongly dependent on RI of core and cladding.

High birefringent, low loss and flattened dispersion asymmetric slotted core-based photonic crystal fiber in THz regime

2019 ◽  
Vol 33 (20) ◽  
pp. 1950218 ◽  
Author(s):  
Md. Khairum Monir ◽  
Mahmudul Hasan ◽  
Bikash Kumar Paul ◽  
Kawsar Ahmed ◽  
Hala J. El-Khozondar ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Real Life ◽  
Simulation Software ◽  
Confinement Loss ◽  
Low Loss ◽  
Material Loss ◽  
Scattering Loss ◽  
High Birefringence ◽  
Crystal Fiber

This paper proposes a novel model to attain high birefringence and low loss in a slotted core-based photonic crystal fiber (PCF) structure in THz regime. The performance of the proposed PCF has been evaluated by applying finite element method (FEM) with full simulation software COMSOL Multiphysics V-5.1. The proposed model gains good optical properties such as high birefringence of 0.24, low effective material loss (EML) of 0.03 cm[Formula: see text], low confinement loss of 6.5 × 10[Formula: see text] (dB/m), low scattering loss of 2 × 10[Formula: see text] (dB/m) and low bending loss of 7.4 × 10[Formula: see text] (dB/cm). The proposed structure also exhibits the flattened dispersion for wider frequency response. However, the real-life fabrication of the suggested model is highly feasible using the current technology due to the unique shape of circular air holes in the cladding region. The outcomes make the proposed PCF a stronger candidate for polarization-preserving applications such as sensing, communications and filtering operations in THz band.

scholarly journals A Large Detection-Range Plasmonic Sensor Based on An H-Shaped Photonic Crystal Fiber

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1009 ◽  
Author(s):  
Haixia Han ◽  
Donglian Hou ◽  
Lei Zhao ◽  
Nannan Luan ◽  
Li Song ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Direct Contact ◽  
Gold Film ◽  
Fiber Material ◽  
The Finite Element Method ◽  
Plasmonic Sensor ◽  
Detection Range ◽  
Crystal Fiber ◽  
Spr Sensor

An H-shaped photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) sensor is proposed for detecting large refractive index (RI) range which can either be higher or lower than the RI of the fiber material used. The grooves of the H-shaped PCF as the sensing channels are coated with gold film and then brought into direct contact with the analyte, which not only reduces the complexity of the fabrication but also provides reusable capacity compared with other designs. The sensing performance of the proposed sensor is investigated by using the finite element method. Numerical results show that the sensor can work normally in the large analyte RI (na) range from 1.33 to 1.49, and reach the maximum sensitivity of 25,900 nm/RIU (RI units) at the na range 1.47–1.48. Moreover, the sensor shows good stability in the tolerances of ±10% of the gold-film thickness.

scholarly journals A Bimetallic-Coated, Low Propagation Loss, Photonic Crystal Fiber Based Plasmonic Refractive Index Sensor

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3794 ◽  
Author(s):  
Mohammad Al Mahfuz ◽  
Md. Anwar Hossain ◽  
Emranul Haque ◽  
Nguyen Hoang Hai ◽  
Yoshinori Namihira ◽  
...  
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Fem Simulation ◽  
Propagation Loss ◽  
Confinement Loss ◽  
Refractive Index Sensor ◽  
Detection Range ◽  
Plasmonic Material ◽  
Crystal Fiber

In this paper, a low-loss, spiral lattice photonic crystal fiber (PCF)-based plasmonic biosensor is proposed for its application in detecting various biomolecules (i.e., sugar, protein, DNA, and mRNA) and biochemicals (i.e., serum and urine). Plasmonic material gold (Au) is employed externally to efficiently generate surface plasmon resonance (SPR) in the outer surface of the PCF. A thin layer of titanium oxide (TiO2) is also introduced, which assists in adhering the Au layer to the silica fiber. The sensing performance is investigated using a mode solver based on the finite element method (FEM). Simulation results show a maximum wavelength sensitivity of 23,000 nm/RIU for a bio-samples refractive index (RI) detection range of 1.32–1.40. This sensor also exhibits a very low confinement loss of 0.22 and 2.87 dB/cm for the analyte at 1.32 and 1.40 RI, respectively. Because of the ultra-low propagation loss, the proposed sensor can be fabricated within several centimeters, which reduces the complexity related to splicing, and so on.

INFLUENCE OF STRUCTURE PARAMETERS ON THE SUPERCONTINUUM GENERATION OF PHOTONIC CRYSTAL FIBER

2020 ◽  
pp. 161-168
Author(s):  
Hieu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Structural Parameters ◽  
Hexagonal Lattice ◽  
Supercontinuum Generation ◽  
Fused Silica ◽  
Confinement Loss ◽  
Crystal Fiber ◽  
Crystal Fibers ◽  
Fused Silica Glass

In this paper, we report a numerical calculation of the influence of structural parameters on the supercontinuum generation of photonic crystal fibers. A photonic crystal fiber based on the fused silica glass, eight rings of air holes ordered in a hexagonal lattice, is proposed. Guiding properties in terms of dispersion and confinement loss of the fundamental mode are also studied numerically. As a result, the broadband width of the supercontinuum spectrum will increase when the lattice pitch decreases or the diameter of air hole in the cladding increases. However, the coherence of SC will become worse.

scholarly journals Highly Sensitive Graphene-Au Coated Plasmon Resonance PCF Sensor

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 818
Author(s):  
Hongyan Yang ◽  
Mengyin Liu ◽  
Yupeng Chen ◽  
Ling Guo ◽  
Gongli Xiao ◽  
...  
Keyword(s):  
High Performance ◽  
Surface Plasmon Polariton ◽  
Propagation Constant ◽  
Maximum Amplitude ◽  
Structural Parameter ◽  
The Finite Element Method ◽  
Crystal Fiber ◽  
Wavelength Sensitivity ◽  
Highly Sensitive ◽  
New Generation

This paper presents a graphene-Au coated photonic crystal fiber (PCF) sensor in the visible regime. Designing a side-polish D-shaped plane over the PCF’s defect of the periodic air holes can effectively enhance the evanescent field. Graphene on gold can enhance the sensor’s sensitivity because it can stably adsorb biomolecules and increase the propagation constant of the surface plasmon polariton (SPP). Using the finite element method (FEM), we demonstrated that the sensing performance is greatly improved by optimizing the PCF’s geometric structural parameter. The proposed PCF sensor exhibited high performance with a maximum wavelength sensitivity of 4200 nm/RIU, maximum amplitude sensitivity of 450 RIU−1, and refractive index resolution of 2.3 × 10−5 RIU in the sensing range 1.32–1.41. This research provides a potential application for the design a new generation of highly sensitive biosensors.

scholarly journals High sensitive triangular photonic crystal fiber sensor design applicable for gas detection

2021 ◽  
Vol 10 (1) ◽  
pp. 1-5
Author(s):  
A. Abbaszadeh ◽  
S. Makouei ◽  
S. Meshgini
Keyword(s):  
Photonic Crystal ◽  
Gas Sensor ◽  
Photonic Crystal Fiber ◽  
Relative Sensitivity ◽  
Effective Area ◽  
Industrial Applications ◽  
Confinement Loss ◽  
The Finite Element Method ◽  
High Birefringence ◽  
Crystal Fiber

A new triangular photonic crystal fiber with a based microstructure core gas sensor has been proposed for the wavelength range from 1.1μm to 1.7μm. The guiding trait of the proposed structure depends on geometric parameters and wavelength, which are numerically studied by the finite element method. According to the results, the relative sensitivity obtained as high as 75.14% at 1.33μm wavelength. high birefringence and effective area are also obtained by order of 3.75×10-3 and 14.07 μm2 finally, low confinement loss of 1.41×10-2 dB/m is acquired at the same wavelength. The variation of the diameters in the cladding and core region is investigated and the results show that this structure has good stability for manufacturing goals. Since the results show the highest sensitivity at wavelengths around 1.2μm to 1.7μm, which is the absorption line of many gases such as methane (CH4), hydrogen fluoride (HF), ammonia (NH3), this gas sensor can be used for medical and industrial applications.

Sign in / Sign up

Export Citation Format

Share Document