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Determination of a physical state of an optical device

  • US 20050230607A1
  • Filed: 04/14/2005
  • Published: 10/20/2005
  • Est. Priority Date: 04/16/2004
  • Status: Active Grant
First Claim
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1. A method of determining a physical state of an optical device with the steps of:

  • coupling a first optical signal to the optical device, wherein a first optical property of said first optical signal is varied according to a first function over the time, measuring a second optical property over the time of a first response signal returning from the optical device in response to the first optical signal and establishing a first result function of said second optical property in dependence of the first optical property of the first optical signal, coupling a second optical signal to the optical device, wherein the first optical property of said second optical signal is varied according to a second function of the time that is different from the first function over the time, measuring the second optical property over the time of a second response signal returning from the optical device in response to the second optical signal and establishing a second result function of said second optical property in dependence of the first optical property of the second optical signal, and determining the physical state based on a combination of the first and the second result functions.

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