Low-Loss GaInAsP Buried-Heterostructure Optical Waveguide Branches and Bends

摘要

Low-loss GainAsP buried-heterostructure waveguide branches and bends have been demonstrated using a novel etch and liquid phase epitaxial regrowth technique. Branching losses as low as 0.4 dB at 1.3-micron wavelength for a 1 deg. branch have been achieved. The measured waveguide propagation loss is = or < 1.5 per cm.