长周期光栅 meaning in English

long-period gratings (lpgs)

Long - period gratings inscribed in photonic crystal fibers
基于光子晶体光纤的长周期光栅
2 several theory analysis methods for properties of fiber gratings are presented including the coupled - mode theory , transfer matrix approach , multi - film method and fourier transfer method . these methods have their own characteristics and scope of application
2介绍了光纤光栅的理论特性分析,并分别利用耦合模理论、传输矩阵法和傅立叶变换法对各类型光纤光栅(布拉格光栅、长周期光栅、啁啾光栅)的光谱特性进行了分析。
2 . several theoretical analysis methods of fiber grating characteristics are presented , including the mode - coupling theory , transfer matrix method , multi - film method and fourier transfer method . the spectra of the fbg and lpg have been analyzed by these methods . the multiplexing techniques and fiber grating demodulation methods are introduced in this dissertation
2 、系统介绍了光纤光栅的理论分析方法,并利用这些方法中的耦合模理论、传输矩阵法和傅立叶变换法对布拉格光栅、长周期光栅、啁啾光栅的光谱特性进行了分析并详细介绍了光纤光栅传感的复用技术和解调技术。