Two-material, air-clad, grating-in-the-waveguide optical interconnects

The fabrication and testing of two-material, air-clad, volume grating-in-the-waveguide optical interconnects are described. Avatrel 2190P photopolymer from Promerus, LLC, and Omnidex HRF600 photopolymer from Dupont are incorporated as the waveguide and grating materials, respectively. Waveguide/grating interconnects exhibiting waveguide propagation losses of a/sub wg/ = -(0.47-3) dB/cm and grating coupling coefficients a/sub g/ = 1.4-5.3 mm/sup -1/ are demonstrated.