Patent ID: 8854620
Filing Date: 2014-10-07
Classification: G01J,G02B,H04B

Abstract:
1. A wavelength multiplexer/demultiplexer suitable for analyzing a spectra composition of an optical beam, the wavelength multiplexer/demultiplexer enabling a detection of light of a particular wavelength, the wavelength multiplexer/demultiplexer comprising: an input slit for allowing an entry of the optical beam into a spectrometer, a location of the input slit, being adjustable, and further the location of the input slit specified by a first angle with respect to a normal of a rating center of a curved grating and a first distance from the grating center; a first output slit for allowing the exiting of a first exit optical beam having a first wavelength, a location of the first output slit being adjustable, and further the location of the first output slit specified by a second angle with respect to the normal of the grating center of the curved gratin and a second distance from the grating center; and a second output slit for allowing the exit of a second exit optical beam having a second wavelength, a location of the second output slit being adjustable, and further the location of the second output slit specified by a third angle with respect to the normal of the grating center of the curved grating and a third distance from the grating center, wherein the second distance and third distance are nearly equal so that both slits are near a circle with radius R