| 摘要 |
A system, method and apparatus for performing optical beamsplitting are disclosed. In a preferred embodiment, a high extinction ratio polarization beamsplitter comprises at least two polarized beamsplitting surfaces that are aligned parallel to each other. The beamsplitter receives a first input light beam that is incident on a first polarized beamsplitting surface. The beamsplitter receives a second input light beam that is also incident on the first polarized beamsplitting surface. In a preferred embodiment, the first and second input light beams have a cross point that is not incident on such first polarized beamsplitting surface. Further, in a preferred embodiment, each of the first and second input light beams are incident on such first polarized beamsplitting surface at a point that is not its center point. Cross talk noise is reduced in a preferred embodiment by directing resulting noise to a point that is not co-linear with an output signal. Further, cross talk noise is reduced in a preferred embodiment by directing noise such that the noise incurs a polarized beamsplitting surface multiple times, each reducing the noise level.
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