a working wavelength 工作波长
B. Developing a 3dB coupler, namely the coupling ratio is 50%, with working wavelength of 1550nm, and testing its parameters.
B．研制工作波长为1550nm的3dB(即分光比为50％)耦合器，并对其参数进行检测。
参考来源 - 熔锥型单模光纤耦合器的传感特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Cut off glass filter has specific properties in spectral transmittance, steadiness, working wavelength selection ect.
截止型玻璃滤光片具有光谱透射特性好，性能稳定，工作波长容易选择等特点。
Theoretical analysis shows that the number of working wavelength will increase with the increment of the harmonic number of the harmonic blazed grating.
理论分析表明，谐闪耀光栅谐振波长数目随谐波数增加而增加，因此可用于多波长斜光束的高效耦合；
For the reason above, regular optical phased array is used only when the size of the modulation unit is smaller than half of the size of the working wavelength.
所以通常规则光学相控阵只用于调制单元的尺寸小于工作波长的一半的情况。
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