| 1. | The design of the transmissive variable optical attenuator
透射型电可调光衰减器的设计 |
| 2. | Polymer - based variable optical attenuator
聚合物热光可变光衰减器 |
| 3. | The temperature character of a novel variable optical attenuator
新型可变光衰减器的温度特性研究 |
| 4. | 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。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | 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。 |
