Abstract : optocoupler is also called optoisolator , it is a semiconductor device which allows electric signal transfers between circuits or systems , meanwhile it can ensure the electric insulation between the circuits or systems each other 光耦合器也称为光隔离器，它是允许电信号在电路或系统之间传输的半导体器件，同时确保这些电路或系统彼此之间电绝缘。
Chapter 2 . an analysis is made on general optical character of spherical grin material and make an example of maxwell fisheye lens model to elaborate the efficiency of imaging and coupling of the grin lens 第二章介绍了一般球梯度折射率光学器件的光线理论，并以maxwell鱼眼微球透镜模型为例研究球梯度微透镜在成像及光耦合方面的性能，显示此类透镜的应用前景。
The present invention provides a wideband wavelength converter with four - wave - mixing , which includes a modulated laser diode , a modulator , a first and second polarized controller , a first , second and third tunable lasers , a optical coupler , a soa wavelength converter and a multiplexer 本发明系提出一种宽频四波混合波长转换装置，其包含调变雷射光源、光调变器、第一及第二极化控制器、第一、第二及第三可调式雷射、光耦合器、半导体光放大器、及一多工器。
High power diode laser array coupling with optical fiber not only make the use of diode laser easier , but also improve the dissymmetry of its output light beam and in the meantime , the output light coupling between the ld sources becomes easier and the power becomes higher 大功率半导体激光器采用光纤耦合输出方式不仅简化了器件的应用,改善了输出光束的非对称性,同时还可以简便地实现多个半导体激光器的光源之间的输出光耦合或组合,得到更高的功率输出。
In part ii a novel designed electronic tongue is developed , which is a multiopto - sensoriccard * based optical ditch system for online liquid detection . compared with traditional e - tongue , the sensing mechanism of our system is based on spectrum analysis technique . three actual measuremental results presented in the thesis demonstrate the validity and advantage of this system 本文将光电子技术和光谱分析技术相结合，区别于已有电子舌系统中，利用化学反应实现液体检测的研制思路，提出了一种利用光谱分析技术的电子舌研制思想，研制了基于集成led和光电二极管阵列的双光路凹型光耦合电子舌系统，所研制的系统具有小体积、低功耗、低成本的特点。
By designing the circuit structure of preamplifier and selecting new elements such as ultra low noise operational amplifier and linear opto - coupler , some difficulties in eeg acquisition is overcome and the common mode rejection ratio ( cmrr ) of preamplifier is highly increased . so eeg can be amplified and detected well 通过对前置放大器等电路结构的精心设计,选用超低噪声的集成运算放大器以及线性光耦合器等新器件,克服了脑电信号采集中经常遇到的一些困难,使前置放大器具有较高的共模抑制比,从而能够较好地放大检测出所需的脑电信号。
Based on acousto - optical coupled wave equation , the momentum mismatch is modified and acousto - electro - optical coupled - wave equations are founded . for one - dimension acousto - electro - optical effects , the momentum mismatch caused by ultrasonic wave is replaced by the summation of mismatch caused by ultrasonic wave and mismatch caused by electric field 根据晶体中光场所遵循的麦克斯韦方程组,以及声场与光场间的参量互作用基本方程出发,在声光耦合波方程的基础上,系统地建立了声电光效应的耦合波方程理论。
