Patent ID: 8368987
Filing Date: 2013-02-05
Classification: G02B

Abstract:
1. An optical processing device, comprising: a plurality of optical ports; a dispersion element for spatially dispersing an optical beam received from the optical ports into a plurality of wavelength components; an optical path conversion system for receiving the plurality of wavelength components and selectively directing at least one of the wavelength components to one of the optical ports; and at least a first optical element for focusing each of the plurality of wavelength components received by the optical path conversion system, said optical path conversion system and said at least first optical element being arranged to reduce a distance between a plane in which one of the wavelength components is focused by the first optical element and a plane in which any of the other wavelength components are focused with respect to a distance between the first and second focal planes that would arise from an inherent dependence of focal length on wavelength.