sub.2 in the second fiber with the fiber ends separated longitudinally a certain distance, then measuring the optical power P.sub. 1 in the second fiber with the fiber ends positioned close together for effecting the splice. The attenuation is calculated from the formula ##EQU1## where R ...
The attenuation coefficient of a coaxial cable around 100 MHz is about 30 dB/km, much larger than that for optical fiber. Using the formula then shows that the maximum usable length for the coaxial cable is 3.5 km. This results in a B× L product of 0.35 Gbps × km, about three ...
84 、The spectra below indicate theattenuationof each optical fiber type used in our optical fiber assemblies.───下面的光谱说明了我们的光纤附件中使用的各种光纤类型的衰减情况。 85 、In determining theattenuationfor an areal array we must specify the direction of the wave travel.───在测定一...
The attenuation of the optical fiber is the power loss occurred when optical signals travel along the optical fiber. The unit of the attenuation (A) is dB, and the attenuation can be calculated using the following formula: A = 10 x lgP1/P2. In the formula, A is the att...
The molar concentration of water vapor in the above equations is given by (230)h=hr(psatpr)(papr) where the saturation vapor pressure is calculated using the following equation. (231)psatpr=10−6.8346(TT01)1.261+4.6151 View article Chapter Optical Satellite Communications Optical Fiber Telecommun...
Attenuation is important intelecommunicationsand ultrasound applications because it's critical to determining signal strength as a function of distance. Minimizing the loss of attenuation is important in microwave, wireless and cellular applications because an optical data link depends on modulated light rea...
attenuation的意思是() A.v.减弱 贬值 B.n.减弱 贬值 C.v.降低(数量 力量 价值) 查看答案
3) variation in fiber attenuation 光纤衰减变化值4) variable optical attenuator 可变光衰减器 1. Research on variable optical attenuators based on polymer/SiON waveguides; 聚合物SiON波导的可变光衰减器性能研究 2. Closed-loop control of all-fiber thermooptical variable optical attenuator; 全光纤热...
The principle of carbon fiber composites(CFC) porosity test based on ultrasonic pulse-echo wavelet was depicted.Based on the principle,supposing that the ultrasonic attenuation system was a linear system,the attenuation influencing factors were independent,and there was only void flaw in CFC,an ultras...
Characterization of flexural acoustic waves in optical fibers using a fiber-tip interferometer Parameters such as the acoustic wavelength, attenuation coefficient, and phase velocity are measured for a range of acoustic frequencies around the 2 MHz ... BJ Miguel,HE Erika,NM Yareli,... - 《Measurem...