- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Methanol-Filled Hybrid Photonic Crystal Fiber with High Birefringent and Negative Dispersion
摘要： A unique hexagonal lattice structure of silica-based solid core photonic crystal fiber (PCF) surrounded by array of air holes is proposed. The cladding portion of the structure consists of five rings where core is made up of 11 small rings filled with methanol. Three different-shaped structures are used to analyze the effect on PCF parameters where the first structure uses circular air holes in cladding and core, the second structure consists of circular air holes in cladding and elliptical air holes in core, and the last structure was designed by using elliptical air holes in both cladding and core. Optical properties birefringence, confinement loss, and negative dispersion have been found theoretically and compared. A novel and relatively simple approach depicts the results that attain high birefringence, low confinement loss, and negative dispersion. It is found that the presence of elliptic air holes instead of circular air holes in the core region and the cladding brings higher birefringence, low confinement loss, and highly negative dispersion.
关键词： Photonic crystal fiber,Effective refractive index,Dispersion,Birefringence,Confinement loss
更新于2025-09-23 15:19:57
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All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 μm Region
摘要： A realistic implementation of an all-fiber CO2 sensor, using 74 cm of hollow core photonic crystal fiber (HC-PCF) as the cavity for light/gas interaction, has been implemented. It is based on CO2 absorbance in the 2 μm region. The working range is from 2% to 100% CO2 concentration at 1 atm total pressure and the response time obtained was 10 min. Depending on the concentration level, the sensor operates at one of three different wavelengths (2003.5 nm, 1997.0 nm and 1954.5 nm) to maintain a high sensitivity across all the working range.
关键词： gas,sensor,tunable laser,carbon dioxide monitoring,fiber bragg grating,photonic crystal fiber
更新于2025-09-19 17:15:36
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Broadband Dispersion Compensation of Single Mode Fiber by using Modified Decagonal Photonic Crystal Fiber having High Birefringence
摘要： This paper presents a highly birefringent dispersion compensating microstructure modified decagonal photonic crystal fiber for broadband transmission communication system. According to simulation, negative dispersion coefficient of ?610 ps/(nm.km) and a relative dispersion slope (RDS) close to that of single mode fiber of about 0.0036 nm-1 with birefringence of the order 2.1×10-2 was obtained at 1550 nm. The variation of structural parameters is also studied to evaluate the tolerance of the fabrication. Moreover, effective area, residual dispersion, effective dispersion, confinement loss, and nonlinear coefficient of the proposed modified decagonal photonic crystal fiber (M-DPCF) are also mentioned and discussed.
关键词： Photonic crystal fiber,Birefringence,Dispersion compensating fiber,Effective mode area,Residual dispersion,Full-vector Finite Element Method
更新于2025-09-19 17:15:36
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Highly sensitive and temperature-compensated fiber bending sensing based on directional resonance coupling in photonic crystal fibers
摘要： A highly sensitive bending sensor with temperature-compensation based on magnetic fluids (MF) infiltrated photonic crystal fiber (PCF) is presented. Specific cladding air-holes are filled with MF material to form defective channels and introduce new degrees of freedom for fiber sensing. The structure designed in such way can achieve simultaneous measurement of bend-curvature and bend-direction with temperature compensation. The bending sensitivity can reach to ?6.544 nm/m?1 with a high linearity within the range of curvature from ?10 m?1 to 10 m?1. The proposed two-dimensional (2D) bending vector sensor cannot only improve the sensing precision and measurement range, but also reduce the metrical difficulty and simplify the process.
关键词： Photonic crystal fiber,Directional resonance coupling,Bending sensor
更新于2025-09-19 17:15:36
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[IEEE 2019 Workshop on Recent Advances in Photonics (WRAP) - Guwahati, India (2019.12.13-2019.12.14)] 2019 Workshop on Recent Advances in Photonics (WRAP) - Picosecond Fundamental Soliton Pulse Compression in Self-similarly designed Chalcogenide Taper Photonic Crystal Fiber
摘要： We numerically demonstrate a pulse compression scheme to compress picosecond fundamental soliton at 2500 nm using Self-similarly designed chalcogenide tapered photonic crystal fiber. Exponentially decreasing dispersion along the length of the fiber act as a tool for the compression process. Dynamics of propagating fundamental soliton has been studied by utilizing nonlinear Schr?dinger equation. Quality analysis has also been investigated for different fiber length to achieve efficient compression condition to achieve high quality IR regime pulses.
关键词： Photonic crystal fiber,Chalcogenide fiber,Supercontinuum generation,Pulse Compression,self-similar Analysis
更新于2025-09-19 17:13:59
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-1-5753907Highly Sensitive Plasmonic Sensor Based on a Dual-Side Polished Photonic Crystal Fiber for Component Content Sensing Applications
摘要： A plasmonic sensor based on a dual-side polished photonic crystal fiber operating in a telecommunication wavelength range is proposed and investigated numerically by the finite element method (FEM). We study the effects of structural parameters on the sensor’s performance and analyze their tuning effects on loss spectra. As a result, two configurations are found when the analyte refractive index (RI) changes from 1.395 to 1.415. For configuration 1, an RI resolution of 9.39 × 10?6, an average wavelength sensitivity of 10,650 nm/RIU (the maximum wavelength sensitivity is 12,400 nm/RIU), an amplitude sensitivity of 252 RIU?1 and a linearity of 0.99692 are achieved. For configuration 2, the RI resolution, average wavelength sensitivity, amplitude sensitivity and linearity are 1.19 × 10?5, 8400 nm/RIU, 85 RIU?1 and 0.98246, respectively. The combination of both configurations can broaden the wavelength range for the sensing detection. Additionally, the sensor has a superior figure of merit (FOM) to a single-side polished design. The proposed sensor has a maximum wavelength sensitivity, amplitude sensitivity and RI resolution of the same order magnitude as that of existing sensors as well as higher linearity, which allows it to fulfill the requirements for modern sensing of being densely compact, amenable to integration, affordable and capable of remote sensing.
关键词： fiber design,surface plasmon resonance,photonic crystal fiber,sensor
更新于2025-09-16 10:30:52
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Tm/Al co-doped silica glass prepared by laser additive manufacturing technology for 2 μm photonic crystal fiber laser
摘要： In this work, we demonstrated the Tm/Al co-doped silica glass fabricated by the laser additive manufacturing technology for the first time. The measurements show that the glass was doped with Tm3+ concentration of 1.64 wt% without any crystallization. The Tm3+ and Al3+ were uniformly distributed and no additional defects were introduced during the fabrication process. The glass exhibits low hydroxyl content level of 11.56 ppm. Using the prepared silica glass as the core rod, a Tm/Al co-doped photonic crystal fiber (PCF) was fabricated and performed 13.9 % slope efficiency with nearly 600 mW output laser power. This novel technology provides an alternative method to fabricate Tm-doped fiber materials with high homogeneity and large core size, promoting the further spread and development of 2 μm fiber lasers.
关键词： Tm-doped fiber,silica glass,laser additive manufacturing,photonic crystal fiber
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Numerical study on a proposed photonic crystal fiber with large modal separation
摘要： We investigate the characteristics of optical modes in a new designed hollow-core photonic crystal fiber (PCF), including the large effective refractive index difference between four vector beams and chromatic dispersion.
关键词： chromatic dispersion,Modal separation,effective refractive index,photonic crystal fiber
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Temperature Sensor Based on Mach-Zehnder Interferometer with Corroded Photonic Crystal Fiber
摘要： A temperature sensor by using a corroded photonic crystal fiber (PCF) based on Mach-Zehnder interferometer (MZI) is proposed and experimentally demonstrated. It fabricated by sandwiching a corroded PCF between two standard single mode fibers (SMFs) with the original region of the air holes of the PCF transforming into a hexagonal ring air cavity. The proposed sensor is linearly responsive to temperature within the range from 25°C to 100°C, with the sensitivity of 2.9 pm/°C, which makes it a highly promising for practical high temperature monitoring application.
关键词： Photonic crystal fiber,Temperature,Mach-Zehnder interferometer
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Design of a low-dispersion ring-core photonic crystal fiber supporting 26 OAM modes
摘要： We propose a new photonic crystal fiber structure to support 26 orbital angular momentum (OAM) modes from 1.25μm to 1.95μm. It has been proven that this fiber has good performance by the numerical analysis, such as low confinement loss, and relatively flat chromatic dispersion. The fiber has only two-layer of air holes, which makes it easier to be manufactured. What’s more, the fiber has a more stable physical structure, the triangular arrangement of air holes which can guarantee the air holes hardly deforms.
关键词： ring-core photonic crystal fiber,orbital angular momentum
更新于2025-09-16 10:30:52