Patent ID: 6816637
Filing Date: 2004-11-09
Classification: G02B

Abstract:
A router for a polarized light, comprising:an optical waveguide for guiding said polarized light; a magneto optic rotator (MOR) for controllably rotating a polarization angle of said polarized light, wherein said MOR comprises: (a) a first section, wherein in said first section a magnetic field is selectively switched between two modes, and wherein in said two modes said magnetic field has equal magnitudes and opposite directions, whereby in maid first section said polarization angle is rotated by a fixed magnitude and selectively in opposing directions; (b) a second section following said first section, wherein in said second section a permanent magnetization prevails; and a polarization beam splitter (PBS) seamlessly integrated into said optical waveguide for accepting said polarized light from said MOR, and routing said polarized light according to said polarization angle.