Refractive index sensing and filtering characteristics of side-polished and gold-coated photonic crystal fiber with a offset core

Wang, Yujun; Li, Shuguang; Yu, Pan

doi:10.1016/j.optlastec.2020.106759

Cited by 44 publications

(11 citation statements)

References 15 publications

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“…Then, the solution domain is divided into 28 276 element grids by using Comsol Multiphysics software for solution calculation. The mode loss can be calculated as [18] α…”

Section: Methodsmentioning

confidence: 99%

A High‐Sensitivity Refractive Index Sensor Based on an External Gold Coating of a Square‐Lattice Photonic Crystal Fiber

Wang

2021

Physica Rapid Research Ltrs

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A high‐sensitivity square‐lattice photonic crystal fiber (PCF) refractive index (RI) sensor based on an external gold coating is proposed. This design eliminates the limitations of selective coating and liquid penetration in the micrometer holes, and avoids the side polishing of D‐type fibers. The effects of air hole diameter and gold film thickness on the sensing performance are studied in detail using the full vector finite element method (FV‐FEM). In addition, the sensing performance of the gold‐coated PCF under the optimized parameters is compared with that of PCF with the same air hole diameter and a gold grating. The results show that the proposed PCF has a higher structural tolerance to the air hole diameter, which improves the manufacturing feasibility. Moreover, the gold‐coated PCF has a maximum sensitivity of 31 000 nm RIU−1 and a resolution of 3.23 × 10−6 RIU in the RI measurement range of 1.34–1.49. The maximum sensitivity of the gold‐grating PCF with lower loss is 30 000 nm RIU−1 in the RI detection range of 1.38–1.46, and the resolution is 3.33 × 10−6 RIU. Low loss is beneficial for extending the length of the fiber, which is convenient for practical implementation. Thus, it has potential applications in biomolecular and biochemical analysis.

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“…Then, the solution domain is divided into 28 276 element grids by using Comsol Multiphysics software for solution calculation. The mode loss can be calculated as [18] α…”

Section: Methodsmentioning

confidence: 99%

A High‐Sensitivity Refractive Index Sensor Based on an External Gold Coating of a Square‐Lattice Photonic Crystal Fiber

Wang

2021

Physica Rapid Research Ltrs

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“…The relative dielectric constant of the gold material (εm) can be calculated by the Drude-Lorentz model [29] ,…”

Section: Design Of the Ss-dc-pcf Pbsmentioning

confidence: 99%

Simple structure dual-core photonic crystal fiber polarization beam splitter covering the O + E + S + C + L + U band based on the surface plasmon resonance effect

Yuan

Qiu

et al. 2021

J. Opt. Soc. Am. B

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In this paper, a simple structure dual-core photonic crystal fiber (SS-DC-PCF) polarization beam splitter (PBS) based on the surface plasmon resonance (SPR) effect and symmetric dual-core coupling mode theory is proposed. For the proposed SS-DC-PCF-1 PBS, the coupling lengths (CLs) and coupling length ratio (CLR) are analyzed, and the variations of the normalized output powers with the propagation length are investigated for the chosen wavelengths 1.434, 1.451, and 1.469 µm. The extinction ratio in cores A and B are compared at the three splitting lengths (SLs) 170, 173, and 176 µm. When the optimal SL is 176 µm, the splitting bandwidth (SB) is 255 nm (1.437–1.692 µm), and the insertion loss (IL) is less than 0.043 dB. The regulations of the CLs and CLR with the change of the structure parameters are analyzed. For the proposed SS-DC-PCF-2 PBS, the optimal SL is 232 µm, the SB is 201 nm (1.249–1.450 µm), and the IL is less than 0.042 dB. Finally, it is demonstrated that the total SB of the proposed SS-DC-PCF-1 PBS and SS-DC-PCF-2 PBS is 443 nm (1.249–1.692 µm), which can cover the O + E + S + C + L + U band, even if the gold film thickness changes by ± 1 n m . The proposed SS-DC-PCF PBS has excellent performances, such as ultrashort SL, ultrawide SB, ultralow IL, and good error-tolerance rate. It will have important applications in all-fiber optical systems.

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“…Optical fiber sensors are an important part of modern sensors. They have the advantages of small volume, anti-electromagnetic interference, multi-parameter sensing, high safety and remote monitoring [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. These characteristics make them very suitable for application in the fields of biomedicine, the petrochemical industry, aerospace, etc.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Sensing Application of Phase Shifted Bragg Grating Sensors

Sun

Zeng

et al. 2022

Materials

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As a special kind of Bragg grating, phase-shifted fiber Bragg grating (PS-FBG) has attracted extensive attention because of its extremely narrow transmission window and excellent sensing performance. The main purpose of this manuscript is to discuss the PS-FBG with special sensing characteristics and explore the influence of different inscription technologies on the sensing characteristics of PS-FBG by comparing the existing inscription methods. The sensing characteristics, advantages and disadvantages of PS-FBG with different structures are analyzed.

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Refractive index sensing and filtering characteristics of side-polished and gold-coated photonic crystal fiber with a offset core

Cited by 44 publications

References 15 publications

A High‐Sensitivity Refractive Index Sensor Based on an External Gold Coating of a Square‐Lattice Photonic Crystal Fiber

A High‐Sensitivity Refractive Index Sensor Based on an External Gold Coating of a Square‐Lattice Photonic Crystal Fiber

Simple structure dual-core photonic crystal fiber polarization beam splitter covering the O + E + S + C + L + U band based on the surface plasmon resonance effect

Fabrication and Sensing Application of Phase Shifted Bragg Grating Sensors

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