The filmindex is higher than that of bulk glass of the same composition as the target, but prepared by rapid quenching from the melt.
薄膜折射率高于与靶成分相同的体型玻璃折射率，而此玻璃是由熔体迅速冷却制得的。
2
ASA Exposure: Index or speed rating that denotes the film sensitivity, defined by the American National Standards Institution.
ASA曝光指数∶由美国国家标准学会规定，标明胶片对光的敏感程度的指数或感光速度。
3
The quantity conditions of film thickness and refractive index control were acquired. The basic facture technics of branched PMPS waveguide circuit was established.