Patent ID: 6690468
Filing Date: 2004-02-10
Classification: G01J

Abstract:
Method for simultaneous analysis of several optical spectra by use of an optical spectrum analyzer with several inlet and outlet apertures arranged offset, perpendicular to a dispersion axis of a dispersion device comprising the steps of:receiving a plurality of light rays via said inlet apertures; independently directing said plurality of light rays to a device for coupling said plurality of light rays to form a plurality of diverging light rays; using a collimator to generate a plurality of parallel bundles of light from said plurality of diverging light rays arriving from the device for coupling; dispersing said plurality of bundles of light along a dispersion axis by a dispersion device to form a plurality of dispersed light rays; deviating said plurality of dispersed light rays by a deviation device and guiding said plurality of dispersed light rays offset in relation to the light rays coming from the dispersion device for a second time to the dispersion device; focusing said plurality of dispersed light rays by a focusing device from the dispersion device onto a device for decoupling a plurality of wavelengths of the light rays; emitting said light rays via the outlet apertures; and measuring in simultaneous fashion an optical performance of said plurality of decoupled wavelengths of said light rays.