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Towards Low-loss Mid-infrared Waveguides in Ge-on-SOI

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Mid-infrared waveguides of different Ge core thicknesses have been developed in Ge-on-SOI. Minimum propagation loss of ~8 dB/cm has been achieved for 0.85 µm thick Ge core using 3.682 µm laser excitation. The waveguides are transparent up to at least 3.82 µm.

© 2016 Optical Society of America

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