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给出了作为波导半径函数的弯曲损耗，讨论了小透光孔径波导的优越性，提出了射频（ＲＦ）溅射镀膜的一种新方法，然后用这种方法作成长度相同、导光孔径不同的几个样品，最后测定了几个样品的光透射率，并对其进行了分析比较。
The bending loss as a function of waveguide radius is given. The superiority of the small aperture waveguide is discussed. A new method of radio frequency (RF) sputter coating is proposed. Then the length of the waveguide is the same and the aperture of the light guide is different Of several samples, and finally measured the light transmittance of several samples, and its analysis and comparison.