Patent ID: 8948548
Filing Date: 2015-02-03
Classification: G02B

Abstract:
1. A method for demultiplexing an optical signal, the method comprising: receiving a multi polarization optical signal; separating the multi polarization optical signal into a first polarization optical signal and a second polarization optical signal; rotating a polarization of the first polarization optical signal to match a polarization of the second polarization optical signal; focusing the rotated first polarization optical signal and the second polarization optical signal to a focal point located upstream from a common demultiplexing device to generate a multi-mode optical field and routing the rotated first polarization optical signal and the second polarization optical signal to the common demultiplexing device; outputting a channel including the rotated first polarization optical signal and the second polarization optical signal each having the matching polarization to a common photodetector.