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基于自聚焦误差检测和光路可逆原理,分析并实验证明了利用一种多功能全息透镜来测量类镜表面平整度的可行性。实验结果表明其测量精度可达微米量级。 相似文献
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Aiming at the problem of
dynamically gain imbalance in cascaded amplification WDM system,a series of dynamically
gain equalized Erbium-doped fiber power booster and inline amplifier were designed and
built,in which the population inversion was controlled.The equalisation transmission was
demonstrated by using this kind of EDFA. 相似文献
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