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- Two methods were introduced to modify the end of fiber and try to get the expanded mode field diameter (MFD) in this work. 介绍了两种对光纤端面进行修饰以扩大模场直径(MFD)的方法(加热扩散法和熔接透镜光纤法)。
- This system has high accuracy of measurement, high automatization and can be easy to be operated by measuring the mode field diameter of the PMF two principal axes. 并通过两种典型的保偏光纤两个主轴的模场直径的测量实验证明该测试系统具有测量精度高、自动化程度高和操作简单等特点,在保偏光纤对轴、熔接等领域有一定参考意义。
- Based on the results, we have proved the relationship between fibers' effective area and mode field diameter, that is supplied by the ITU-T Recommendation. 并在实验测试的基础上,验证了ITU-T文件中有关光纤有效面积与模场直径间的关系。
- The principles and devices of the offset joint method for the measurement of mode field diameter of single mode fibers, which is one of the recommendations by CCITT, are described, and the experimental results are presented. 论述了用横向错移法测量单模光纤模场直径的测量原理、测量装置和测量结果,该方法是国际电信电报咨询委员会(CCITT)所推荐的单模光纤模场直径测量方法之一。
- The output mode field diameter(MFD)and divergence angle are predicted by empirical equations, simulated by finite-difference beam propagation method(FD-BPM)numeric tool, and experimentally observed. 利用射线理论和经验公式给出了TLF基模光斑和发散角;
- Measurement of Mode Field Diameter of Single-Mode Optical Fiber 单模光纤模场直径的测量
- The field artillery pounded away at the for tress. 野战炮兵连续炮击那座要塞。
- A New Kind of Mode Field Diameter Measuring System for Single-mode Fiber 新型单模光纤模场直径测试系统
- The crowd cheered as the teams entered the field. 球队入场时观众们为之欢呼。
- On the map the drains of each field are laid sown. 地图上标有每一块地的排水沟。
- Right-handed batters usually hit to left field. 右撇子击球手把球打到左外野。
- Mode Field Diameter Measurement - Variable Aperture Method in the Farfield 模场直径测量。远场可变孔径法
- The runaway horse was cornered in a field. 那匹跑掉的马在田地里被圈住了。
- Tent is used by camper and by soldier in the field. 露营的人和战地的士兵用帐篷。
- The children had a field day with their new toys. 孩子们玩新玩具玩得十分开心。
- An oil well blew out in the oil field. 油田里有一口油井发生井喷。
- He is an adventurer in financial field. 他是金融领域的投机者。
- The castle frowned down upon the field. 城堡呈威压之势俯视原野。
- The peasants fertilize the field by using manure. 农民们施肥来使土地肥沃。
- The field of operations has been staked out. 军事演习的区域已经划定。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries