Patent ID: 9547131
Date: 2017-01-17
CPC Classifications: G02B

Claim:
1. A polarization beam splitter for a broad wavelength window comprising: a waveguide body in rectangular shape with a width and a length configured to yield no more than four modes; an input waveguide being coupled to a first end of the waveguide body at a location having a first distance away from a middle line along the length; a pair of output waveguides being coupled to a second end of the waveguide body at two mirrored locations having a second distance away from the middle line; wherein the length is selected to be 61.25 μm and the first distance is substantially the same as the second distance equal to ⅙ of the width, so as to provide an polarization beam splitting mechanism for splitting a light signal in a wavelength window of at least 50 nm around 1300 nm received at the input waveguide to a primarily TE polarization mode signal at one of the pair of output waveguide located at a same side of the middle line and a primarily TM polarization mode signal at another one of the pair of output waveguide.