包层损耗 caldding absorption 与金属化纸交替重叠绕包的碳黑纸 carbon-loaded paper interlocked with metallized paper ..
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通过模拟，给出基模损耗同芯折射率、光波长和包层空气孔直径之间的一般规律。
After the simulation, the relationship of fundamental mode loss with the core index, wavelength and the diameter of cladding air holes is given.
介电常数虚部大（绝对值），而且包层模序也大时，损耗较大。
The loss is greater when the imaginary part of the complex dielectric constant is bigger and the mode order is higher.
利用光线理论研究光纤弯曲损耗与弯曲半径、纤芯折射中以及包层折射率的关系。
By the theory of ray optics, the bend losses of fiber as function of fiber parameters such as core index, cladding index, core radius and bend radius are set up.
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