光学 精密工程
2023, 31(24): 3540
红外与激光工程
2022, 51(10): 20220549
为了运用光子晶体光纤高非线性效应技术获得超宽光谱, 设计了一种基于光子晶体光纤的超连续谱光源, 通过对光子晶体光纤进行塌孔处理后再熔接的方式, 将高峰值功率的窄线宽脉冲光注入高非线性光子晶体光纤, 利用光纤非线性效应实现了光谱展宽。实验结果表明, 该超连续谱光源实现了光谱范围440~2 400 nm, 输出光功率为276 mW。
光子晶体光纤 超连续谱 塌孔处理 photonic crystal fiber (PCF) super continuum spectrum hole collapse treatment
Department of Electrical and Electronic Engineering, Independent University Bangladesh, Dhaka, Bangladesh
photonic crystal fiber (PCF) dispersion nonlinearity optical broadband communication Frontiers of Optoelectronics
2020, 13(4): 433
Electronics and Communication Engineering Discipline, Khulna University, Khulna 9208, Bangladesh
birefringence dispersion polarization maintaining photonic crystal fiber (PCF) polarization-selective devices polarization Frontiers of Optoelectronics
2019, 12(2): 165–173
1 Department of Information and Communication Technology (ICT), Mawlana Bhashani Science and Technology University (MBSTU), Santosh, Tangail 1902, Bangladesh
2 Group of Biophotomatiχ, Santosh, Tangail 1902, Bangladesh
3 Department of Software Engineering (SWE), Daffodil International University, Shukrabad, Dhaka 1207, Bangladesh
photonic crystal fiber (PCF) surface plasmon resonance (SPR) perfectly match layer polarization filter Frontiers of Optoelectronics
2019, 12(2): 157–164
1 北京理工大学 光电学院, 北京 100081
2 北京首钢股份有限公司, 河北 迁安 064400
3 北京理工大学 激光微纳制造研究所, 北京 100081
针对大于500℃的高温环境, 提出了一种可用于高温温度测量的高温光子晶体光纤(PCF)温度传感器。在光子晶体光纤末端熔接一段纯石英无芯光纤构成外腔式光纤法珀腔(EFPI)结构。纯石英无芯光纤在高温下的热膨胀和热光效应使得EFPI的光学腔长发生变化。结合光纤白光干涉测量技术, 通过测量EFPI的腔长得到被测温度。在不同温度环境下, 对腔长为175μm的EFPI光纤温度传感器进行连续测量。测量结果显示, 设计的高温光纤温度传感器在27~1100℃范围内, 腔长-温度三阶拟合精度达到99.95%, 腔长-温度灵敏度为(0.851+0.0023T-0.000000957T2)nm/℃, 其中在1100℃时, 温度测量分辨率为0.225℃。
外腔式法珀腔(EFPI) 光子晶体光纤(PCF) 光纤白光干涉测量 Extrinsic Fabry-Perot Interferometer (EFPI) photonic crystal fiber (PCF) white-light interferometry (WLI)
合肥工业大学,仪器科学与光电工程学院,合肥 230009
利用在PCF的空气孔中进行温敏液体选择填充时,PCF的温敏特性会受到影响这一原理,提出了一种高温度灵敏度的光子晶体光纤(PCF)。运用有限元法(FEM)对填充温敏液体后的PCF的温敏特性进行分析。从温敏液体的选择及改变光纤结构参数两个方面研究了此光子晶体光纤的温敏特性。研究结果显示,用乙醇选择填充空气孔时,在工作波长为1.55 μm时,该PCF的温度灵敏度高达3.37×10-5℃-1,研究结论在PCF温度传感器方面有广泛的应用价值。
光子晶体光纤 乙醇填充 高灵敏度 温度传感 有限元法 photonic crystal fiber (PCF) ethanol-filling high sensitivity temperature sensing finite element method
Author Affiliations
Abstract
1 Department of Information and Communication Technology (ICT), Mawlana Bhashani Science and Technology University (MBSTU), Tangail-1902, Bangladesh
2 Department of Material and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology University (BUET), Dhaka-1000, Bangladesh
This paper proposes a hexagonal photonic crystal fiber (H-PCF) structure with high relative sensitivity for liquid sensing; in which both core and cladding are microstructures. Numerical investigation is carried out by employing the full vectorial finite element method (FEM). The analysis has been done in four stages of the proposed structure. The investigation shows that the proposed structure achieves higher relative sensitivity by increasing the diameter of the innermost ring air holes in the cladding. Moreover, placing a single channel instead of using a group of tiny channels increases the relative sensitivity effectively. Investigating the effects of different parameters, the optimized structure shows significantly higher relative sensitivity with a low confinement loss.
Photonic crystal fiber (PCF) liquid sensor microstructure core sensitivity confinement loss Photonic Sensors
2016, 6(3): 279
天津理工大学 薄膜电子与通信器件重点实验室, 天津 300384
提出了一种基于ZnTe碲酸盐玻璃的单芯光子晶体光纤偏振分束器.在外侧包层纤芯对称位置引入缺陷孔, 使缺陷模和纤芯基模发生耦合以实现光束分离.采用全矢量有限元法对所提出的单芯光子晶体光纤偏振分束器的特性进行研究, 结果表明: 该分束器可以实现1.3 μm和1.55 μm波长光的分离, 并使光束沿X和Y偏振方向同时传播;当光纤长度为15 mm时, 1.3 μm和1.55 μm处的串扰值分别低至-45.1 dB和-40.2 dB, 小于-20 dB的带宽分别为44.2 nm和67.1 nm;在传输波长1.3 μm和1.55 μm处的损耗值为0.063 dB和0.048 dB;偏振分束器在具有低串扰值的同时, 具有较低的限制损耗.
光纤光学 光子晶体光纤 偏振分束器 有限元法 限制损耗 串扰 Fiber optics Photonic crystal fiber(PCF) Polarization splitter Finite element method(FEM) Confinement Loss Crosstalk