1) EPS-SSFBG
等效相移超结构光纤光栅
1.
A method of quantitative analysis of the relationship between EPS-SSFBG and optical pulse width was presented.
对OCDMA系统性能与光源占空比的关系进行了理论分析,提出了分析等效相移超结构光纤光栅编解码器的结构参数与光源脉冲宽度关系的定量分析方法,利用MATLAB仿真软件计算分析了光源占空比对编解码器性能的影响。
2.
Based on the introduction of equivalent phase shift superstructure fiber Bragg gratings(EPS-SSFBG),a method of quantitative analysis of the relationship between EPS-SSFBG and optical pulse width is presented.
在介绍等效相移超结构光纤光栅编解码器原理的基础上,提出分析等效相移超结构光纤光栅编解码器的结构参数与光源脉冲宽度关系的定量分析方法,利用MATLAB对光源占空比对于编解码器性能的影响进行了计算机仿真。
2) phaseshifted super-structure fiber grating(SSFBG)
相移超结构光纤光栅
4) superstructure fiber bragg grating
超结构光纤光栅
1.
Study on the Sensing Characteristic of Superstructure Fiber Bragg Gratings;
超结构光纤光栅传感特性的研究
2.
In view of filter principle of superstructure fiber bragg grating theoretically analyzing,the superstructure fiber bragg grating filter has been used in the spectrum measurement of Brillouin scattering.
从理论上分析了超结构光纤光栅的滤波原理,将所研制的超结构光纤光栅滤波器应用于自发布里渊散射测量中,初步实现了自发布里渊散射信号与瑞利散射信号的有效分离及自发布里渊散射谱的测量,并给出了实验系统及实验结果,表明了该方案的可行性。
5) superstructure fiber grating
超结构光纤光栅
1.
Superstructure Fiber Grating Sensor System and Its Application on the Measurement of Oil/gas Down-hole;
油气井中超结构光纤光栅传感器系统的应用研究
2.
The structures and principles of the hybrid frequency/time coding projects are summarized, which are based on multi-wavelength optical FBG, superstructure fiber grating, acoustically tunable optical filters and array wave-guide grating.
基于多波长光纤光栅、超结构光纤光栅、可调谐声光滤波器和阵列波导光栅的时频结合的编/解码方案的结构及原理,分析其可调谐性及可集成,讨论时频结合的编/解码技术的应用前景。
6) superstructured fiber Bragg grating
超结构光纤光栅
1.
A orthogonal quaternary phase OCDMA en/decoder based on superstructured fiber Bragg grating is proposed and realized.
提出并实现了一种基于超结构光纤光栅的正交四相光码分多址编/解码器。
2.
The mathematical model of OCDMA en/decoder based on phase-shifted superstructured fiber Bragg grating(SSFBG) with low reflectivity is presented,and the performance of SSFBG en/decoder is investigated with different input pulse width as well as grating chip length.
给出了低折射率相移超结构光纤光栅(SSFBG)光码分多址编解码器的数学模型,采用自相关峰旁瓣比(P/W)、自互相关峰比(P/C)两个参量作为衡量编解码器性能的主要指标,仿真研究了不同脉宽及不同光栅(码片)长度条件下超结构光纤光栅编解码器的性能,得到了编解码器的P/W、P/C随输入脉冲宽度及编解码器长度的变化曲线。
补充资料：超声频移诊断
超声频移诊断
ultrasonic doppler diagnosis
亦称“D型超声诊断法”。是应用多普勒效应超声探测血液流动和脏器活动的方法。此法可获得因回声频率变化(即多普勒效应)的信号音图、曲线图及多普勒图像。可对血流听诊、测速，获得横断面、纵剖面及侧面投影图。超声心动图可确切显示心脏某一指定部位血流速、向性数据。其最大优点为无损伤、操作简便、迅速、便于重复应用。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条