Wavelength-scanning white-light interferometry with a 3x3 coupler-based interferometer.
A novel white-light interferometry capable of retrieving the absolute optical path difference is presented, in which a 3x3 coupler-based interferometer is employed. The measured phase change is in agreement with that obtained by Fourier transform white-light interferometry. The linear property is also experimentally demonstrated.
Jiang
Yi
Y
Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing, China. bitjy@bit.edu.cn