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).
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.
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.
介绍长周期光纤光栅基本工作原理、器件特性和制备方法，同时对这种器件在光通信和传感系统中的应用状况作了简要概述。
The present paper introduce mainly basic principle, device characteristic and making method of long-period fiber grating and outlines the application status in optical communication and sensor system.
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.
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.
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.
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.
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.
此外还发现，长光栅对应的抖动周期小，因此对信号的影响也小；
The longer the fiber gratings are, the smaller period of dispersion ripples they have, and subsequently the much less the influence on CATV signals.
此外还发现，长光栅对应的抖动周期小，因此对信号的影响也小；
The longer the fiber gratings are, the smaller period of dispersion ripples they have, and subsequently the much less the influence on CATV signals.
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