Abstract

This study proposes a novel algorithm based on the multiple self-mixing interference (MSMI) theory to measure the velocity of a remote target without contact. The principle of MSMI is presented and the corresponding formulas for velocity measurement are derived. Fast Fourier transform is applied to detect signal frequency and calculate velocity values. A low-cost, compact, and easy-to-operate experimental setup is also constructed. Experiments are conducted to validate the correctness of our algorithm. This algorithm can improve resolution more easily than conventional self-mixing interference methods.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Multiple self-mixing interference based on phase modulation and demodulation for vibration measurement

Chunlei Jiang, Xin Wen, Shuxin Yin, and Yunfei Liu
Appl. Opt. 56(4) 1006-1011 (2017)

Rotation velocity measurement based on self-mixing interference with a dual-external-cavity single-laser diode

Chunlei Jiang, Yuhan Geng, Yuwei Liu, Yunfei Liu, Peng Chen, and Shuxin Yin
Appl. Opt. 58(3) 604-608 (2019)

Rotation velocity measurement based on a self-mixing grating interferometer

Taiji Dong, Bingkun Gao, Chen Qing, and Yuhan Geng
Appl. Opt. 59(20) 5930-5936 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics