By adjusting the difference of refractive index of the double layer film, singlemodeoperation can be realized with a certain waveguide thickness.
通过改变外延生长工艺来调节两层薄膜的折射率,可在一定波导的厚度范围内实现单模传输。
2
Condition for singlemodeoperation of DBR fibre laser is given based on rate equations theory. We apply it to the design by analyzing characteristics of grating reflectivity and some approximation.
With ideal communication method, strong diagnosis ability, single set of equipment and redundancy mode, it has been proved that FSC system has an easy operation and good security.