@inproceedings{oai:niigata-u.repo.nii.ac.jp:00031047, author = {Suzuki, Takamasa and Iwana, Tatsuo and Sasaki, Osami}, book = {Proceedings of SPIE - the International Society for Optical Engineering, Proceedings of SPIE - the International Society for Optical Engineering}, month = {Feb}, note = {This paper describes a range-finder that uses two feedback loops. Each feedback loop is respectively used to control the phase and the modulation-amplitude in a sinusoidal phase-modulating interference signal. It enables us to perform unambiguous measurement and real-time processing on the interference signal. Also external disturbance superimposed on the interference signal is eliminated by the feedback control. A distributed-Bragg-reflector laser diode that has wide range in wavelength-tuning allows us to improve the measurement accuracy., Two- and three-dimensional vision systems for inspection, control, and metrology : 29-30 October 2003 : Providence, Rhode Island, USA. : Oct 2003, Providence, RI}, pages = {120--126}, publisher = {International Society for Optical Engineering, SPIE}, title = {Modulation-amplitude-locked laser diode interferometry for distance measurement}, volume = {5265}, year = {2004} }