长周期光纤光栅是一种新型光纤器件。
Long period fiber grating (LPFG) is a new kind of optical fiber element.
介绍了长周期光纤光栅制作技术上的进展。
The progress in fabrication method of long period fiber grating (LPFG) is introduced.
分析研究了长周期光纤光栅轴向的模场变化。
The axial distribution for mode fields of the LPFG is analyzed and researched.
设计了一种基于长周期光纤光栅的电压传感系统。
A kind of fiber voltage sensing system based on long period fiber grating is designed.
金属包层长周期光纤光栅可用于对谐振波长的调谐。
Metal coated long period fiber gratings (LPFG) can be used to change the resonance wavelength.
介绍了长周期光纤光栅的耦合机理、制备方法以及应用。
The paper presents its mode coupling mechanism, the fabrication methods as well as its applications.
介绍了利用飞秒激光器刻写长周期光纤光栅的基本方法。
The main mechanisms of femtosecond laser inscription LPFG are discussed.
长周期光纤光栅的谐振峰中心波长随温度的变化呈线性关系。
The relationship between the resonant wavelength shift of the novel LPFGs and the applied temperature is linear.
其次从耦合模理论出发，建立了长周期光纤光栅的数学模型。
From coupled mode theory, the mathematical model of LPG was established.
对长周期光纤光栅和双锥形光纤之间的倏逝波耦合作用进行了研究。
Evanescent-field coupling based on long-period fiber grating (LPG) and bi-conical tapered fiber is proposed and investigated both theoretically and experimentally.
采用级联多个长周期光纤光栅的方法有效拓宽了长周期光纤光栅反射谱带宽。
An improved method of cascaded long-period fiber gratings (LPFGs) is proposed, which can effectively broaden the resonant spectrum bandwidth of LPFGs.
首次发现了在双折射光纤中写入的长周期光纤光栅存在对偏振不敏感的谐振峰。
A polarization insensitive LPFG operating at a specific wavelength is achieved by writing the LPFG in a birefringence fiber, for the first time.
对采用高频CO2激光脉冲写入的新型长周期光纤光栅的透射谱进行了理论分析。
The transmission spectrum of a novel long period fiber grating written with the high frequency CO2 laser pulses is theoretical analyzed.
研究了高频CO2激光脉冲写入的长周期光纤光栅在扭曲状态下的横向负载特性。
The transverse load characteristics of twisted long-period fiber grating (LPFG) written by high-frequency CO2 laser pulses was demonstrated.
分析了单侧CO2激光脉冲曝光导致长周期光纤光栅横截面折射率分布的不均匀性。
The CO2 laser incident on the fiber result in an asymmetric refractive-index distribution within the cross-section of the LPFG.
新型长周期光纤光栅在波长不敏感方向其谐振峰幅度和它所受的横向压力呈线性关系；
The relationship between the resonant amplitude and the applied transverse load in the wavelength-insensitive orientation of the novel LPFGs is linear, (3).
本文主要研究了聚合物长周期光纤光栅的传感特性及掺偶氮聚合物长周期光纤光栅的制作。
In this paper, we presented a research of the sensing characteristics of polymer Long period grating and its inscribing.
应用耦合模理论和传输矩阵法计算模拟了长周期光纤光栅的透射谱，并对其进行了切趾优化。
Based on the coupled-mode theory, the transfer-matrix method is used to calculate the transmission spectra of phase-shifted long-period fiber gratings (LPFG).
而且这种长周期光纤光栅的谐振波长随温度变化而线性变化，谐振峰幅值对温度变化不敏感。
The resonant wavelength and resonant peak amplitude of the gain equalizer can be tuned by means of adjusting the temperature and transverse load independently.
报道了一种分析长周期光纤光栅(LPFG)透射谱谐振波长和衰减率随弯曲曲率变化的方法。
A method to analyze the resonant wavelength and damping decrement of the transmission spectrum of long period fiber grating (LPFG) with bending curvature was reported.
对于涂覆长周期光纤光栅(LPG)传感元件，涂覆层折射率大于包层折射率时将具有很高的灵敏度。
As the refractive index of the overlay is higher than that of the cladding, the Long Period fiber Grating (LPG) element exhibits high sensitivity.
结果表明：目前比较适合用于偶氮苯聚合物长周期光纤光栅刻写的方法有偏振直写法和振幅掩模法两种。
The results show that it is suitable to write azopolymer long-period optical fiber gratings using the polarization direct writing method and amplitude mask method.
写于载氢光纤上的长周期光纤光栅经过高温退火后 ，对其进行紫外均匀曝光能够有效改变其耦合特性。
UV uniform exposure can effectively vary the coupling characteristics of the annealed long period gratings (LPGs) in hydrogen loaded fiber.
分别采用丙烯酸类聚合物与硅树脂材料实现了长周期光纤光栅（LPFG）的大范围波长调谐与温度补偿。
Both acrylate-based polymer and silicone resin were proposed as recoating materials for broadband wavelength tuning and temperature compensation of LPFG.
机械微弯长周期光纤光栅除了上述优点外还具有可重构、易调节、成本低等优点，成为近些年的研究热点。
Recently, mechanically induced micro-bending long-period fiber grating (MBLPFG), have drawn lots of interests, because it has advantages of being reconfigurable, easy to adjust and low cost.
对长周期光纤光栅传输谱谐振波长的应变特性用耦合模理论进行研究，推导出谐振波长应变灵敏度的解析表达式。
The strain sensitivity characteristic of long-period fibre grating (LPFG) was studied by coupled-mode theory and the strain sensitivity analytic equation of the resonant wavelength was deduced.
分析了长周期光纤光栅(LPG)的啁啾特性和切趾特性，给出了基于LPG的增益平坦滤波器可调的理论依据。
The chirp and apodization characteristics of long-period grating (LPG) are analyzed, and the theoretic foundation of adjustable gain flattening filter based on LPG is provided.
采用长周期光纤光栅均衡滤波器，设计出了光纤长周期光栅（LPG）均衡光纤宽带放大器，并进行了模拟计算。
With the equalizing filter made by long period grating(LPG), we design the flat gain spectra of EDFA.
文中同时对长周期光纤光栅的光谱特性进行分析和数值模拟，为长周期光纤光栅的制作和传感研究提供理论参考。
Theoretical analysis and numerical simulation of transmission spectral characteristics is a good reference to the fabrication and sensor application of LPFG.
并通过与其他方案对比，说明了基于长周期光纤光栅器件的优点，肯定了长周期光纤光栅在通信传感领域的价值。
In comparison with other schemes, advantages of the LPFG based devices and an important role of the LPFG in communication and sensing technology are demonstrated in detail.
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