排序方式: 共有56条查询结果,搜索用时 171 毫秒
51.
52.
We demonstrate the generation of supercontinuum(SC)of over 1350 nm by injecting 790-nm,15-rs,74-MHz optical pulses into a 183-mm-long microstructured fiber with combination core and random cladding.The maximum total power of SC is 73 mW with 290-mW pump power from 40× microscope objective.Thewavelength and power ranging in SC as well as the polarization states and waveguide modes of the visiblelight can be tuned by adjusting the input end of MF.In particular,white light has been observed.To ourknowledge,this is the first report of tunable properties in SC generation process using microstructuredfiber with combination core and random cladding. 相似文献
53.
54.
55.
本文分析了语音信号的对称限幅引起的短时FFT谱变异,计算了相同音段在不同程度限幅下的谱相关系数。以及不同音素在同样限幅下的谱相关系数、本文为开发实用语音识别系统提供了依据。 相似文献
56.