1

I have a plot of the power transmitted through a device as a function of wavelength, from 1500 to 1600nm. There is some Fabry-Perot noise, plus I suspect some other regularities. I would like to perform a Fourier analysis of the data, with the final goal of getting a frequency or, better, the cavity length at the origin of any periodicity.

I tried with Fourier, but I would like to correct for the fact that my scan doesn't start from 0, and I couldn't find anywhere the answer to that question. Moreover, I know that the Fourier transform will live in k-space, but I am having some problems in moving to a frequency space. Can anybody give me some hints?

Karsten7
  • 27,448
  • 5
  • 73
  • 134
Samuele Grandi
  • 33
  • 3
  • 1
    Can you post the data you are working with ? – Sektor Aug 06 '15 at 10:01
  • 1
    I put together some information on Fourier [here] (http://mathematica.stackexchange.com/questions/85139/what-do-the-x-and-y-axis-stand-for-in-the-fourier-transformation-in-wolfram-math/85167#85167) this may help. In particular Fourier does not require the x values of your data only the y values. – Hugh Aug 06 '15 at 10:17

0 Answers0