I was trying to find the IP portfolio of BB Photonics, but I found only one patent from the Principal Scientist/Founder Miroslaw (Mirek) Florjanczyk. The applicant is not BB Photonics, it's the National Research Council of Canada. If someone can find the IP portfolio, please let us know.
Planar waveguide wavelength dispersive devices with multiple waveguide input aperture
And here is the IP portfolio of Denselight Semiconductors