Patent ID: 7349157
Filing Date: 2008-03-25
Classification: G02B,G02F

Abstract:
1. An optical communication splitting device designed to receive, as input, two beams at first and second wavelengths respectively, the beam at said second wavelength being polarized, the device comprising: a beam input; a first beam output and a second beam output that are spatially separate, the system being, for the beam having the first wavelength, substantially transparent between the input and said first output and substantially opaque between the input and said second output; a polarizing beam splitter designed to selectively transmit part of the beam having the second wavelength to the first output or the second output depending on the polarization of said beam part; and a polarization variation system for varying the polarization of the beam having the second wavelength, said system being placed upstream of the polarizing beam splitter relative to the direction of propagation of the beam within the splitting device, said device being arranged so that an energy distribution of the beam having a second wavelength can be varied between the first beam output and the second beam output by adjusting the polarization variation system, while a substantially fixed part of the beam having the first wavelength is being transmitted between the beam input and the first beam output, wherein the distribution of the energy of the second beam component pertaining to the second spectral range can be set continuously between both output ports.