(特性曲线上的)成比例区段
For the lasers with symmetrical waveguide, the photon absorption of the non-active region material is proportional to the doping concentration of material, which causes serious absorption loss.
对称波导结构激光器中,非有源区材料对光子的吸收与其掺杂浓度成正比关系,吸收损耗比较严重。
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