Why are the fringes obtained with Fabry Perot interferometer are sharper than that obtained by Michelson interferometer?


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  • $\begingroup$ Are they? Please explain what you mean. $\endgroup$ – garyp Apr 13 '17 at 16:56
  • $\begingroup$ @garyp By sharper I mean, the ratio of maximum intensity (bright fringe) to minimum intensity (dark fringe) is greater in Fabry Perot interferometer compared to Michelson. $\endgroup$ – mobifz96 Apr 21 '17 at 12:24
  • $\begingroup$ The "dark" fringe in a Fabry-Perot can be very "bright", and the "dark" fringe in a Michaelson can be zero. So I'm still not sure what you are getting at. $\endgroup$ – garyp Apr 21 '17 at 13:00

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