Velocity Measurement by Self-Mixing Laser Diode Using Direct Modulation

被引：0
|
作者：
Ibrahim, Amalina Athira [1 ]
Ambran, Sumiaty [1 ]
Ahmad, Fauzan [1 ]
Mikami, Osamu [1 ]
Fujikawa, Chiemi [2 ]
机构：
[1] Univ Teknol Malaysia, Malaysia Japan Int Inst Technol, Dept Elect Syst Engn, Kuala Lumpur 54100, Malaysia
[2] Tokai Univ, Grad Sch Engn, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 2591292, Japan
来源：
2018 IEEE 7TH INTERNATIONAL CONFERENCE ON PHOTONICS (ICP) | 2018年
关键词：
Laser Doppler Velocimeter; self-mixing; laser diode; direct modulation;
D O I：
暂无
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：
Doppler Laser Velocity measurement by self-mixing effect using direct modulation laser diode is proposed to distinguish the direction of the object movement. In order to distinguish the movement direction, assembling the frequency shift device such as an acoustic optic cell in the optical system is imperative. However, the self-mixing scheme does not have the ability to satisfy this condition due to its simple system. Therefore, triangular-wave modulation current with repetition frequency of 250Hz is applied directly to the laser diode. The emission produced a wavelength of 780nm. Target speed of 0.1-0.4 cm/s was measured and its movement direction was distinguished successfully. Both the velocity and moving direction of the target were obtained.
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页数：3
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