Highly-sensitive and high-resolution all-fiber three-dimensional measurement system.
A practical all-fiber three-dimensional measurement system is demonstrated with an incoherent interferometer at the eye-safe wavelength of 1.55 mum. The sensitivity and axial resolution are as high as 102 dB and 1.4 mum from a few meters' distance, respectively. A rotating scanner is developed for axial scanning, and a wide longitudinal scanning range of 54 mm is demonstrated. The high resolution images of a few samples are clearly obtained at the speed of 52 points/s. Moreover, the resolution, sensitivity, speed, and angle dependence are discussed for measurement of a 100 yen Japanese coin.
Ohta
Takefumi
T
Division of Advanced Science and Biotechnology, Graduate School of Engineering,Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. ohta@photonics.mls.eng.osaka-u.ac.jp
Nishizawa
Norihiko
N
Ozawa
Tetsuya
T
Itoh
Kazuyoshi
K