Abstract

High-diffraction-efficiency polarization-insensitive waveguide gratings formed on an AlxGa1−x As/AlyGa1−y As/GaAs double heterostructure have been designed, to our knowledge for the first time, for use in integrated optoelectronic circuits for signal processing. The calculated grating length is L = 4 mm, and outcoupling efficiencies are ηTEηTM ≈ 1 for both air and substrate coupling at λ0 = 0.85 μm.

© 1994 Optical Society of America

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