@inproceedings{oai:niigata-u.repo.nii.ac.jp:00031070,
 author = {Suzuki, Takamasa and Aizaki, Takatsugu and Sasaki, Osami and Maruyama, Takeo},
 book = {Proceedings of SPIE - the International Society for Optical Engineering, Proceedings of SPIE - the International Society for Optical Engineering},
 month = {Mar},
 note = {A new type of two-wavelength interferometer for the measurement of absolute distance is described. Since the wavelength of the laser diode is temporally multiplexed, only one laser diode light-source is required, thus eliminating the necessity of aligning two independent optical axes. Absolute distance is calculated from the difference of the phases in the interference signals generated by each wavelength. The self-correlation function is applicable in our system for detecting this phase- difference between two kinds of interference signals, thereby, the signal processing is very simple and there is a possibility that the real-time distance measurement becomes possible in our new method., Lasers as tools for manufacturing 2 : Conference : Feb 1997, San Jose, CA},
 pages = {192--199},
 publisher = {International Society for Optical Engineering, SPIE},
 title = {Two-wavelength laser diode interferometer with a time-sharing heterodyne modulation},
 volume = {2993},
 year = {1997}
}