optical modulation的例句大全

Design of the Optical System Moder Boiler Flame Detector in Thermal Power Station Modulation of Photon Energy Spectra from X Ray Units

火焰检测器的光路设计X光机辐射能谱的调制

On-off keying ( OOK) is the main modulation method used in the present optical communication engineering, simple and easy to implement. But its bit error rate is so high that error correcting coding techniques are necessary.

目前无线光通信工程主要采用开关键控调制，该调制简单、易实现，但误码率高，需要引入纠错编码技术。

The influences of BER using different modulation techniques in the weak and strong fluctuation regimes on Wireless Optical Communication systems are discussed. The results show that the subcarrier BPSK modulation is superior to the OOK and subcarrier DPSK modulations in Wireless Optical Communication systems applications.

讨论了弱、强湍流下不同调制技术对误码率的影响，结果表明：副载波BPSK调制在光通信系统应用中较OOK和副载波DPSK调制更具优势。

Study on the Application of Optical Brightening Agent ( OBA) for Color Modulation in Making Coated Paper

荧光增白剂（OBA）应用于铜版纸生产中调色方案的研究

The Optical Fiber TV Transmisson System of Pluse Fequency Modulation

脉冲频率调制光纤电视传输系统

Novel modulation and multiplexing techniques are key technologies which could mitigate the transmission impairments in optical transmission system.

采用新型的光调制和光复用技术可以有效地抑制这些传输损伤的影响，成为高速光传输系统的关键技术之一。

The emphases in this paper is that the modulation and demodulation system of optical fiber sensor is designed and made, and the experiments of temperature characteristic of optical fiber strain sensor are made.

本文的重点是设计F-P光纤传感器的调制解调系统。实验内容包括光纤传感器的温度特性和应变特性实验。

In this pager, the self-phase modulation effect in gain saturated semiconductor optical amplifier and its affect on the shape, phase and spectrum of transmission pulse are analyzed.

本文分析了半导体激光放大器处于增益饱和状态下的自相位调制（SPM）效应，以及SPM效应对传输脉冲波形、相位及频谱的影响。

new modulation formats with high spectral efficiency have been regard as the most effective and economic way to expand the capacity on the refined bandwidth of the present optical fiber communication network.

具有高频谱利用率的新型调制格式被认为是突破现有光纤通信网络带宽限制，实现传输容量扩展的一种经济而有效的关键技术。

When the external electric field is given, the maximum modulation instability growth rates will increase to a maximum then decreases as the incident optical intensity enhances.

在外加电场给定时，调制不稳定性增长率的最大值随入射光强的增大先达到一峰值然后又减小。

in the experiments, in order to obtain the best modulation parameter, several multi-mode ld ( mld) modulation methods and optical fiber interference characteristics under corresponding conditions are investigated.

在实验中，选用不同的电流波形调制，研究了相应条件下的光纤干涉特性，并找到了最佳的调制参数。

effect of self-steepening and modulation instability of optical pulses in decreasing dispersion fibers

自变陡效应与色散缓变光纤中的调制不稳定性

the reference arm of laser interferometer was constituted of pzt groups with modulation and compensation function. the optimal combination of pzt groups and the optical path changes induced by modulation signal and feedback compensation signal are also analyzed.

激光干涉仪参考臂由具有调制和补偿功能的双PZT组构成，分析了双PZT组的最佳组合方式，及其在调制信号和反馈补偿信号作用下对干涉测量仪光程差的改变情况。

the value of degree of modulation can be obtained by m0-η 0 curve so long as the optical diffraction efficiency η 0 has been measured by using a light dynamometer.

只要用光功率计测出零级光衍射效率η0，就能由M0-η0曲线得到其调制度的大小。

ccd as a sampling device, its mtf cannot be measured according strict theory. but in optical engineering of remote sensing, the modulation measurement is still one of the important way for the image quality estimation, especially for camera adjustment.

CCD是采样器件，不能按照严格理论测量MTF，但光学遥感中仍采用调制度测量作为像质评价尤其是相机调试的重要手段。

analysis of the error of polarizing modulation optical transducer

偏振调制型导波光学传感器光路误差分析

generation of ultrashort optical pulse pair based on cross-phase modulation in optical fibers

光纤中基于互相位调制效应的超短光脉冲对的产生

a kind of optical measuring kilowatt-hour meter based the light combination modulation

一种基于组合光调制的光测电度表的设计

the phase diversity reception of the amplitude modulation signal, the application of quadrature amplitude modulation ( qam) signal in the coherent optical system, and the automatic polarization control in the coherent optical system are studied in this thesis.

本文主要对调幅信号的相位分集接收，正交幅度调制（QAM）信号在相干光通信系统中的应用，以及相干光系统中的自动偏振控制技术进行了研究。

research on modulation schemes and automatic polarization control technology in coherent optical communication system

相干光通信系统中调制码型及自动偏振控制技术的研究