Patent ID: 6970237

Claim:
A method for determining an insertion loss (L DUT ) for a plurality of measuring wavelengths within a range of wavelengths for an optical component ( 20 ) having one or more connections (C 1 , C 2 ), comprising the steps of: a) determining a connection insertion loss (L C1 , L C2 ) for one or more of the connections (C 1 , C 2 ) by means of a reflectometric measurement at a representative wavelength representative for the connection insertion loss (L C1 , L C2 ) in the range of wavelengths, b) determining a total insertion loss (L total ) of the optical component ( 20 ) together with its one or more connections (C 1 , C 2 ) for a plurality of measuring wavelengths within the range of wavelengths, c) determining, for each measuring wavelength, the insertion loss (L DUT ) of the optical component ( 20 ) from the determined total insertion loss (L total ) at that measuring wavelength and from each determined connection insertion loss (L C1 , L C2 ) at the representative wavelength.