Optical 8-channel, 10 Gb/s MT pluggable connector alignment technology for precision coupling of laser and photodiode arrays to polymer waveguide arrays for optical board-to-board interconnects

The paper introduces a low cost, precision alignment technique designed to be unaffected by temperature or process variations in the thickness of the PCB FR4 board, the thickness of the lower cladding between the PCB board and the waveguide core, the thickness of the upper cladding above the waveguide core, the relative lateral position of waveguides across the PCB, and the axial position of the cut entrance and exit faces of the waveguide.