variable optical attenuator造句
例句与造句
- The design of the transmissive variable optical attenuator
透射型电可调光衰减器的设计 - Polymer - based variable optical attenuator
聚合物热光可变光衰减器 - The temperature character of a novel variable optical attenuator
新型可变光衰减器的温度特性研究 - Variable optical attenuator is one of the key devices in wavelength - division multiplexing systems
可变光学衰减器( voa )是波分复用系统的关键器件之一。 - This paper introduces the principal theory , process and test technology of variable optical attenuator
本文分析了集成化可变光学衰减器的工作原理、工艺制作和测试技术。 - It's difficult to find variable optical attenuator in a sentence. 用variable optical attenuator造句挺难的
- This thesis presents a study on the non - silicon based mems optical switch and variable optical attenuator . by fully utilizing the available micro - machining capability , we developed a series of devices based on electrical discharge machining technique
在阅读国内外相关文献的基础上，利用实验室现有条件，制作了一系列器件，并对器件进行了性能测试与分析。 - The content of the thesis is classified into three parts . the first part summarizes the modern tecchnoligies for optical switches and variable optical attenuators , analyzes the pros and cons of the techniques involved
第一部分主要研究了现有光开关及可调光衰减器的实现技术，对各种技术的优点及缺点进行了分析，并对光开关及可调光衰减器技术现状进行了概述。 - The last part of the thsis presents a novel fast response digital variable optical attenuator . this device is driven by two electromagnetic driving units rather not stepper motors . a wide attenuation ( 40db ) was fully digitized and can be set by a certain number of driving pulses
论文最后针对现有数字可调光衰减器均由步进电机驱动，体积庞大，造价高昂且速度缓慢的缺点，利用微反射单元设计了一种高速数字式可调光衰减器。 - We had fabricated the variable optical attenuator of mmi structure with ridge wave - guide structure and also studied the reactive iron etching of silicon . at last , we tested the variable optical attenuator and draw some conclusions . after testing , we can draw a conclusion that the technology parameter of the device is ideal
在分析y分支和多模干涉器型( mmi )的光学衰减器结构的基础上，采用脊形波导结构制作了mmi结构的可变光学衰减器，并对硅的刻蚀技术进行了研究和探讨，最后对制得的器件进行了测试研究。 - Electro - optical curves for lc cells have been analyzed and it has been shown mat a large attenuation range and a shallow attenuation slope can be achieved simultaneously for a variable optical attenuator based on a parallel - aligned lc cell with an appropriate surface anchoring strength . as compared with the existing liquid crystal - based voa structure ( using two cascaded lc cells with a particular material ) , the present structure is simple and has no special requirement for the lc materials
提出了基于弱锚定平行排列液晶盒的可变光衰减器(衰减范围大、衰减曲线下降平缓以保证调节精度) ，与己有液晶型可变光衰减器结构(选用特定液晶材料、两个液晶盒级联结构)相比较，本论文提出的基于弱锚定平行排列液晶盒的可变光衰减器结构简单，同时对于液晶材料无特殊要求。 - The third part introduces the design , fabrication , analysis and testing of serveral types of variable optical attenuators . we have designed a micro - machining based voa that consists of an electromagnetically actuated gold - coated silicon mirror rotating around a 100 # am diameter shaft and a miniature driven coul . the voa is capable of fast dynamic response ( < 2ms ) , great dynamic range ( 0 ~ 35db ) , and low return loss ( < 55db )
论文利用有限元分析软件ansys对该器件进行工作曲线分析及动态响应分析，分析结果与实测结果接近，实测结果表明，驱动电压0 8v ，工作范围0 35db ，动态响应时间为2ms ，插入损耗小于0 . 8db ，回波损耗小于- 50 . 5db 。 - Based on the above background and under the support of tianjin natural science foundation project : intelligent fiber amplifiers and light sources , tianjin natural science foundation project : ( c + l ) broadband fiber amplifier and nankai - delta ( tianjin ) project : development of gain flattened erbium - doped fiber amplifiers , this dissertation is mainly focused on the study of novel gc - edfa , gain and nf ( noise figure ) improvement of edfa , light sources , multi - wavelength fiber laser and voa ( variable optical attenuator )
基于以上背景,在天津市重点基金项目? ?智能型光纤放大器和光源的研究、天津市重点基金项目? ? ( c + l )超宽带掺杂光纤放大器和南开-达尔泰(天津)项目? ?开发增益平坦的掺铒光纤放大器的支持下,本论文主要围绕新型gc - edfa 、 edfa性能的优化、增益控制用光源、多波长光纤激光器以及可调光衰减器等课题进行了理论和实验研究。 - In wavelength division multiplexing ( wdm ) optical communication networks , power equalization and adjustment between channels demand variable optical attenuator ( voa ) be capable of providing low power consumption , low insertion loss , polarization independence , integration compatibility and flatness in a wide wavelength range . among the presented voas , thermo - optic type owns superior polarization dependence upon electro - optic one , and thermo - optic voa can be driven with much lower power than micro - electro - mechanic system ( mems )
在波分复用( wdm )光通信网络中，多信道间的功率均衡和调整需要具有良好特性的光可变衰减器( voa ) ，这些特性包括：低功耗、低插入损耗、偏振无关、易于集成以及大波长范围内的通带平坦性。 - Meanwhile , with the development of wdm / dwdm communication systems , more and more attention is paid on the edfas with broader bandwidth , good gain and noise feature , and gain clamping , etc . according to the tianjin natural science foundation project : intelligent fiber amplifiers and light sources , the tianjin natural science foundation project : ( c + l ) broadband fiber amplifier and the nankai - delta ( tianjin ) project : development of gain flattened erbium - doped fiber amplifiers , this dissertation is mainly focused on the study of novel gain - clamped edfa , light sources , multi - wavelength fiber laser and variable optical attenuator for gain - clamped usage , gain and noise improvement of edfa , and broadband edfa
Wdm / dwdm通信系统的发展又需要edfa具有更大的带宽、优良的增益和噪声特性和增益控制等功能。基于上面的情况,并结合天津市重点基金项目? ?智能光纤放大器光源的研究、天津市重点基金项目? ? ( c + l )超宽带掺杂光纤放大器和南开-达尔泰(天津)项目? ?开发增益平坦的掺铒光纤放大器等课题,论文主要围绕新型增益控制edfa 、增益控制用光源、多波长激光器及可调光衰减器、 edfa性能优化和超宽带edfa等方面进行了理论和实验研究。 - The wavelength dependence of the directional couplers is modeled and with this model optimal designs of planar wavelength circuits based on mach - zehnder interferometers and their cascaded forms are presented . liquid crystals are widely used in optical information processing technologies . optical devices based on liquid crystals , such as variable optical attenuators ( voas ) , switches and tunable filters , have been introduced into the area of optical communications recently
在基于级联mach - zehnder干涉仪的宽带器件设计中，本论文建立了定向耦合器波长敏感性的近似模型，并在此基础上提出了通过对初始结构(即不考虑定向耦合器波长敏感性的设计结果)做微扰来确定宽带器件结构参数的设计方法。