variable attenuator 中文意思是什麼

variable attenuator 解釋
可變衰減器
  • variable : adj 1 易變的，變化無常的，無定的 （opp constant steady）。2 可變的，能變的；變換的。3 【數學】變...
  • attenuator : n. 【物理學】衰減器。
  1. Two - step - 20dbx2 and variable attenuator

    二段式固定衰減器- 20dbx2以及可調式衰減器
  2. Verification regulation of 0hz 30mhz variable attenuator

    0hz 30mhz可變衰減器檢定規程
  3. The design of the transmissive variable optical attenuator

    透射型電可調光衰減器的設計
  4. Two - step - 20db x 2 and variable attenuator

    二段式固定衰減器- 20db x 2以及可調式衰減器
  5. 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

    論文最後針對現有數字可調光衰減器均由步進電機驅動，體積龐大，造價高昂且速度緩慢的缺點，利用微反射單元設計了一種高速數字式可調光衰減器。
  6. In general, the thesis covers the following aspects : first, in accordance with the property of variable tuning optical attenuator ( voa ), which is analyzed and discovered through diffraction theory, selected block plate and made attenuator, and achieved satisfactory effect by experiment in light transportation circuit

    針對可調型機械擋光衰減器的擋光特點，從衍射理論的角度分析和發現該器件的衰減特徵，並根據該特徵選擇擋光片，製作了衰減器。在傳輸光路上試用，獲得了較好的效果。
  7. 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

    提出了基於弱錨定平行排列液晶盒的可變光衰減器（衰減范圍大、衰減曲線下降平緩以保證調節精度） ，與己有液晶型可變光衰減器結構（選用特定液晶材料、兩個液晶盒級聯結構）相比較，本論文提出的基於弱錨定平行排列液晶盒的可變光衰減器結構簡單，同時對于液晶材料無特殊要求。
  8. 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 ）的光學衰減器結構的基礎上，採用脊形波導結構製作了mmi結構的可變光學衰減器，並對硅的刻蝕技術進行了研究和探討，最後對制得的器件進行了測試研究。
  9. Fibre optic interconnecting devices and passive components - basic test and measurement procedures - examinations and measurements - accuracy and repeatability of the attenuation settings of a variable attenuator

    光纖互聯裝置和無源部件.基本試驗和測量程序.第3 - 14部分:檢查和測量.不同衰減器的衰減裝置的準確性和可重復性
  10. Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 14 : examinations and measurements - accuracy and repeatability of the attenuation settings of a variable attenuator

    光纖互聯裝置和無源部件.基本試驗和測量步驟.第3 - 14部分:檢查和測量.不同的衰減器的衰減裝置的準確性和可重復性
  11. Variable optical attenuator is one of the key devices in wavelength - division multiplexing systems

    可變光學衰減器（ voa ）是波分復用系統的關鍵器件之一。
  12. 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

    在閱讀國內外相關文獻的基礎上，利用實驗室現有條件，製作了一系列器件，並對器件進行了性能測試與分析。
  13. Polymer - based variable optical attenuator

    聚合物熱光可變光衰減器
  14. The temperature character of a novel variable optical attenuator

    新型可變光衰減器的溫度特性研究
  15. This paper introduces the principal theory, process and test technology of variable optical attenuator

    本文分析了集成化可變光學衰減器的工作原理、工藝製作和測試技術。
  16. 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 )

    在波分復用（ wdm ）光通信網路中，多通道間的功率均衡和調整需要具有良好特性的光可變衰減器（ voa ） ，這些特性包括：低功耗、低插入損耗、偏振無關、易於集成以及大波長范圍內的通帶平坦性。
  17. 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 )

    基於以上背景，在天津市重點基金項目? ?智能型光纖放大器和光源的研究、天津市重點基金項目? ? （ c + l ）超寬帶摻雜光纖放大器和南開-達爾泰（天津）項目? ?開發增益平坦的摻鉺光纖放大器的支持下，本論文主要圍繞新型gc - edfa 、 edfa性能的優化、增益控制用光源、多波長光纖激光器以及可調光衰減器等課題進行了理論和實驗研究。
  18. 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通信系統的發展又需要edfa具有更大的帶寬、優良的增益和噪聲特性和增益控制等功能。基於上面的情況，並結合天津市重點基金項目? ?智能光纖放大器光源的研究、天津市重點基金項目? ? （ c + l ）超寬帶摻雜光纖放大器和南開-達爾泰（天津）項目? ?開發增益平坦的摻鉺光纖放大器等課題，論文主要圍繞新型增益控制edfa 、增益控制用光源、多波長激光器及可調光衰減器、 edfa性能優化和超寬帶edfa等方面進行了理論和實驗研究。
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