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Optical detection device with reduced light throughput oscillations

  • US 20070076204A1
  • Filed: 09/29/2005
  • Published: 04/05/2007
  • Est. Priority Date: 09/29/2005
  • Status: Active Grant
First Claim
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1. A method to perform a setting of an optical detection device, which detection device comprises:

  • a first and a second waveguide, each having an end face adapted for emitting and receiving light and facing each other in a distance d, and an envelope at least partially enveloping the distance d and being adapted for at least partially guiding light between the end sides, the method comprising;

    measuring of a transmission characteristic between the waveguides which transmission characteristic showing at least one of a minimum and a plateau and being dependent on the distance d, and setting the distance d to a working point on the distance d in said minimum or plateau, wherein the variation of the transmission around the working point is low, accordingly the derivation of the measured transmission characteristic is low.

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