Self-mixing modulation of semiconductor laser wavelength for detection of motion direction

Kuo-Tong Ma; Chin-Kuei Li; I. M. Vincent Chiu; Mason Yen; Wai William Wang; Kelvin Lee

doi:10.1117/12.645716

28 February 2006 Self-mixing modulation of semiconductor laser wavelength for detection of motion direction

Kuo-Tong Ma, Chin-Kuei Li, I. M. Vincent Chiu, Mason Yen, Wai William Wang, Kelvin Lee

Proceedings Volume 6115, Physics and Simulation of Optoelectronic Devices XIV; 611527 (2006) https://doi.org/10.1117/12.645716
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

The wavelength of a semiconductor laser diode (LD) is modulated using the self-mixing effect to create the undulation wave. In order to determine the direction of a moving target, the number of undulations is added to the undulations of detected Doppler frequency shift. These modulated undulations are generated through the difference between the rising and falling counts of a triangular modulated current waveform of LD. A theoretical model is proposed to relate the wavelength modulation and current modulation of LD to predict the number of undulations so that the direction of a moving target can be determined.

Citation Download Citation

Kuo-Tong Ma, Chin-Kuei Li, I. M. Vincent Chiu, Mason Yen, Wai William Wang, and Kelvin Lee "Self-mixing modulation of semiconductor laser wavelength for detection of motion direction", Proc. SPIE 6115, Physics and Simulation of Optoelectronic Devices XIV, 611527 (28 February 2006); https://doi.org/10.1117/12.645716

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