The results showed the absorption band produced by the imperfection, impurity and non diamond phase in films decreased the transmission of the films.
结果表明，膜中的缺陷、杂质和非金刚石相在透射谱中产生吸收带；
2
In fact, the seemingly anomalous dispersion of the impurityband in the first Brillouin zone is a result from band folding.
在第一布里渊区中出现的杂质带的反常色散实际上是能带折叠的结果。
3
The characteristics of photonic forbidden band and impurity mode in doped one-dimensional photonic crystal were investigated by numeral simulated calculation with the method of characteristic matrix.