Wavelet Transform Based De-noising Method for Self Mixing Interferometry Signals

被引：7

作者：

Sun, Yuan ^{[1
]}

Yu, Yanguang ^{[1
]}

Xi, Jiangtao ^{[1
]}

机构：

[1] Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia

来源：

THIRD ASIA PACIFIC OPTICAL SENSORS CONFERENCE | 2012年 / 8351卷

关键词：

self-mixing interferometry; de-noising; wavelet transform; LINEWIDTH-ENHANCEMENT FACTOR; OPTICAL FEEDBACK; LASER;

D O I：

10.1117/12.915940

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Self-mixing interferometry (SMI) signals are observed from a laser diode (LD) with optical feedbacks induced by an external target. SMI signals carry information related to both of the target and parameters of the LDs. However, the noise contained in SMI signals greatly degrades the applications of the SMI systems. This paper proposes a wavelet transform based de-noising method which can effectively eliminate noise while keeping an SMI waveform less changed. The proposed method is verified by both simulations and experiments.

引用

页数：7

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