Effect of nonlinear wavelength scanning to Fourier transform white-light interferometry

The effect of nonlinear wavelength scanning to Fourier transform white-light interferometry was examined. A Mach-Zehnder interferometer was interrogated, and the absolute optical path difference was measured. The experimental results show that the nonlinearity of the Fabry-Perot tunable filter has no effect on the measurement. A measuring discrimination of 3 nm is achieved. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 426–432, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24097