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- W2768549393 abstract "A resonator is characterized with two cascaded arrayed waveguide gratings (AWGs) in a ring formation. From this structure, the on-chip transmittance of a single AWG is extracted, independent of coupling efficiency. It provides improved measurement accuracy, which is essential for developing AWGs with extremely low loss. Previous methods normalize the off-chip AWG transmittance to that of a reference waveguide with identical coupling, leading to an uncertainty of ∼14 % on the extracted on-chip AWG transmittance. It is shown here that the proposed AWG-ring method reduces this value to ∼3 %. A low-loss silicon AWG and an AWG-ring are fabricated. Channel losses with <2 dB are found, with a crosstalk per channel approaching -30 dB. Such an efficient wavelength multiplexing device is beneficial for the integration of spectroscopic sensors, multi-spectral lasers, and further progress in optical communication systems." @default.
- W2768549393 created "2017-12-04" @default.
- W2768549393 creator A5006458946 @default.
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- W2768549393 date "2017-11-22" @default.
- W2768549393 modified "2023-09-26" @default.
- W2768549393 title "Low-loss demonstration and refined characterization of silicon arrayed waveguide gratings in the near-infrared" @default.
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- W2768549393 doi "https://doi.org/10.1364/oe.25.030651" @default.
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