The shift for resonance wavelengths is produced with environmental temperature and external refractive index.
环境温度、外部折射率指数的变化会导致谐振波长位移。
The noise characteristics of an IEC LD depend mainly on the lengths of the active region and the external cavity and on the changes in the refractive index.
指出IEC LD的噪声特性主要取决于有源区和外腔的长度及折射率的变化。
When crystal is affected by the external electric field, there will be changes in the refractive index.
某些晶体受到外加电场的作用，其折射率将发生变化。
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