Abstract
Holographic recording of relief-free diffraction gratings and channel waveguides with a large refractive index contrast of 0.8–1.2 is demonstrated, employing photo-modification of GaAs semiconductor material under illumination with low intensity light. The developed technology opens doors to direct optical recording and high-density monolithic integration of integrated optical components based on such compound semiconductor materials as GaAs and InP.
© 2015 Optical Society of America
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