To take EDFA for example, the dissertation introduces the principle and structure of fiber amplifier, and analyzes its property: gain and bandwidth, gain saturation, amplifier noise and gain spectra. It also discusses the factors that affect the gain and noise characteristics, such as the length of fiber, pump power, the input signal optical power, signal wavelength, etc. And it gives cheap shoes blog 2010 methods and directions that could improve the property of EDFA, which is good for the fiber amplifier design and optimization.For the requirement of China Electronics Technology Group Corporation for the 34th Research Institute, the standardizing EDFA that could be used in practical application is designed and made: with cascade amplifying, the gain of optical power could reach wedding dresses 2010 30dBm; and the micro control module could reasonably and intelligently judge and control the pump switch and warning signals. The design and optimization of fiber amplifier in the blog wedding dresses 2010 internal arrangement, dimension, fa?ade, and interface are also necessary, so the fiber amplifier could steadily and properly run in the practical working environment.The experiment tests the polo shirts shop major functional indicators of the amplifier. The signal output at 1552nm is about 826mW, when pump cheap polo shirts wavelength is 975nm, pump power is 3×3W. It basically achieves the request of 30dBm. And the micro control module could automatically control the pump laser diode according to the signal input, output and other warning signals.
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