D. Yb3+-deoped fiber ring laser working at 1053nm with narrow bandwidth was realized by using band-pass filter.2.
D．采用带通滤波器，实现了掺Yb~(3+)光纤环形激光器中心波长为1053nm，窄线宽的激光输出。
参考来源 - 掺Yb～（3+）光纤超短脉冲激光器的研究The wide bandwidth bandpass filter is designed to suppress the fundamental and third harmonic signals.
设计宽带带通滤波器的目的是为了抑制基波和三次谐波。
参考来源 - Q波段宽带四倍频放大组件研究The eight channels of Marr wavelet are implemented by the bandpass filters based second-generation switched-current technology.
文章采用基于第二代开关电流技术的带通滤波器组实现了8通道的Marr小波。
参考来源 - 连续小波变换开关电流电路的实现·2,447,543篇论文数据，部分数据来源于NoteExpress
他的量带通遍天下，他的言语传到地极。
Their line is gone out through all the earth, and their words to the end of the world.
接下来，宽带双反射带通和导向孔箱体也有很好的效率。
Next in line, the wide-bandwidth dual-reflex and the ported enclosure exhibit very good efficiency as well.
带通滤波器的特性通过两个参数表示：带通中心频率和共鸣带宽。
Two parameters are used to specify the characteristics of a BPF: passband centre frequency and resonance bandwidth.
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