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clamped
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    Simulation of gain clamped L band erbium doped fiber amplifier using single fiber grating
    单根光栅箝制的L-band掺铒光纤放大器模拟
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  “clamped”译为未确定词的双语例句
    Low noise characterization of gain clamped erbium doped fiber ring lasing amplifiers
    增益锁定掺铒光纤环形激光放大器的低噪声特性
短句来源
    All optical Gain clamped in Line Fiber Amplifier for Dynamic Gain Equalization of WDM Networks
    适合WDM网络动态增益均衡的全光增益锁定光纤放大器
短句来源
    On Si (111) substrate, double clamped nano beam with a thickness of 242nm has been fabricated by using KOH anisotropic etching and other conventional MEMS processes.
    在(111)硅衬底上,用KOH选择性腐蚀制作出了厚度约为242nm的双端固支硅纳米梁;
短句来源
    A Simple Drive Method for Active clamped Quasi resonant Converters
    有源钳位准谐振变换器的一种简单驱动电路
短句来源
    A Review of Research on All optical Gian clamped Erbium doped Fiber Amplifier
    全光增益箝制掺饵光纤放大器研究概况
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  clamped
In this paper, the boundary stabilization of the Timoshenko equation of a nonuniform beam, with clamped boundary condition at one end and with bending moment and shear force controls at the other end, is considered.
      
Conformal analysis of fundamental frequency of vibration of elastic clamped plates
      
Finally, taking ellipse elastic clamped plates as an example, the effects on fundamental frequency coefficient caused by eccentric ratio e and area size are analyzed.
      
An ultrasonic linear motor is proposed and fabricated by using the longitudinal and bending vibration double mode bolt-clamped Langevin type transducer to meet high power and speed requirements in the aerospace and semiconductor industries.
      
The concentration convection in an isothermal fluid near an air bubble clamped between the vertical walls of a horizontal channel with a rectangular cross-section is studied experimentally and numerically.
      
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In the present article we propose a new-type design of piezoelectric direct-radiator loudspeaker. The driving system of the speaker is constructed by a circular PZT bimorph, which is clamped on its boundary. An elastical coupling element is utilized between the bimorph and the speaker cone. As a result, the loudspeaker of diameter φ20cm which we prepared is of rather high sensitivity, and its non-uniformity of the frequency response from 200 to 6000 as is lower than 15 db. Besides, We have analyzed the...

In the present article we propose a new-type design of piezoelectric direct-radiator loudspeaker. The driving system of the speaker is constructed by a circular PZT bimorph, which is clamped on its boundary. An elastical coupling element is utilized between the bimorph and the speaker cone. As a result, the loudspeaker of diameter φ20cm which we prepared is of rather high sensitivity, and its non-uniformity of the frequency response from 200 to 6000 as is lower than 15 db. Besides, We have analyzed the vibrating problem of the sandwich type bimorph with an elastieal plate, and also studied the problem of designing the coupling system and cone of the loudspeaker.

文章提出一种新型压电陶瓷直接辐射式扬声器的设计。扬声器的驱动元件是边缘固定的圆形PZT双型弯曲振子,振动——辐射元件是圆锥形纸盆,这两部分之间采用弹性耦合。研制成的φ20厘米口径的扬声器,频响从200到6000赫内不均匀度小于15分贝,灵敏度也较高。文章中对中间夹有弹性板的圆形压电陶瓷双型元件的振动设计作了分析。对纸盆以及耦合系统的设计也进行了探讨。

A method for determining Young’s modulus and residual stress of siliconstress of silicon microstructures isdescribed. The method obtains Young’s modulus and residual stress by measuring first resonance frequencies of silicon cantilever beams and both ends clamped beams fabricated usingmicromachining techniques.The beams are excited by electro-statical force and the resonance frequencies are measuredusing a simple optical measuring apparatus.The results thatof this method is that the measurement setup is...

A method for determining Young’s modulus and residual stress of siliconstress of silicon microstructures isdescribed. The method obtains Young’s modulus and residual stress by measuring first resonance frequencies of silicon cantilever beams and both ends clamped beams fabricated usingmicromachining techniques.The beams are excited by electro-statical force and the resonance frequencies are measuredusing a simple optical measuring apparatus.The results thatof this method is that the measurement setup is very simpleand the fabrication of samples is easy.The results that Young’s modulus of(100)plane〈110〉direction single-crystal silicon thin films is 128GPa and residual stress of that is 74.7MPa was obtained in experiment.

叙述了利用硅悬臂梁和两端固定梁微构件进行硅微薄膜材料的弹性模量和残余内应力的测试方法。本方法利用简单的光学装置,通过测量悬臂梁和两端固定梁的一阶谐振频率,分别嵡蟮阅A亢筒杏嗄谟αΑ1痉椒ú饬肯低臣虻ィ匝谱鞣奖悖臼匝榛竦茫ǎ保埃埃┟妫迹保保埃緧方向单晶硅微薄膜的弹性模量为128GPa。残余内应力为74.7MPa。

In order to achieve the best performance of the gain clamped erbium doped fiber amplifier (EDFA), it is proposed that, by using of the phenomenon that the noise figure of EDFA shows a dip around the shallow saturation region and the effect that high laser power suppresses ASE power strongly, the noise characterization of the gain clamped ring lasing amplifier can be improved. Based on an optical configuration of EDFA with a ring feedback loop, the noise characterization of gain clamped...

In order to achieve the best performance of the gain clamped erbium doped fiber amplifier (EDFA), it is proposed that, by using of the phenomenon that the noise figure of EDFA shows a dip around the shallow saturation region and the effect that high laser power suppresses ASE power strongly, the noise characterization of the gain clamped ring lasing amplifier can be improved. Based on an optical configuration of EDFA with a ring feedback loop, the noise characterization of gain clamped EDFA was investigated experimentally. The results show that wide enough gain clamped dynamic region and low noise figure are achieved simultaneously if the operation point of the amplifier, i.e., the degree of feedback, is chosen properly when the pump and laser lights travel in the same direction as the signal.

为了得到噪声性能优良的增益锁定掺铒光纤放大器,提出利用掺铒光纤放大器噪声指数曲线在浅饱和区有一凹陷的特性以及强激光功率对放大的自发辐射的抑制作用,可以改善增益锁定放大器的噪声特性,并在以反馈环路实现增益锁定的掺铒光纤放大器光路结构上实验研究了不同反馈深度对放大器的噪声特性的影响,结果表明在正向泵浦放大光路中引入同向选频激射,通过适当选择反馈深度即放大器的工作点,可以在获得足够宽的输入信号动态范围的同时获得比反馈锁定前更低的噪声指数。

 
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