Patent ID: 9664854
Date: 2017-05-30
CPC Classifications: G02B

Claim:
1. A silicon photonics device comprising: a substrate member; an interface for receiving an input, the input including a transverse electric (TE) component and a transverse magnetic (TM) component; a polarization beam splitter (PBS) overlying the substrate member, the PBS being configured to split the input into a TE output and a TM output, the TE output comprising the TE component, the TM output comprising the TM component; a TE optimized demultiplexer (demux) overlying the substrate member, the TE optimized demux having a TE demux input coupled to the TE output, the TE optimized demux having a plurality of TE demux outputs, the TE optimized demux comprising a 300 nm×300 nm waveguide structure; a TM optimized demux overlying the substrate member, the TM optimized demux having a TM demux input coupled to the TM output, the TM optimized demux having a plurality of TM demux outputs; a plurality of paths including a first pair of paths and a second pair of paths; a plurality of polarization beam combiners (PBC) including a first PBC and a second PBC, the first PBC being coupled to a first TE demux output and a first TM demux output via the first pair of paths, the first pair of paths being characterized by a first symmetrical length, the first PBC being configured to provide a first TE+TM output; and a plurality of photodiode (PD) structures overlying the substrate, the plurality of PD structures including a first PD and a second PD, the first PD being coupled to the first PBC output.