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Monolithic integration of silica-based AWG filter and germanium photodiodes for one-chip WDM receiver

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Abstract

Using low-temperature plasma-enhanced chemical vapor deposition, a silica-based arrayed-waveguide grating (AWG) filter has been monolithically integrated with germanium photodiodes on a silicon-based photonic platform. All the outputs of a 16-channel AWG with 200- GHz spacing have been equipped with germanium photodiodes. All wavelength channels of the integrated device were confirmed to function as a wavelength-division-demultiplexing receiver for 1.25-Gbps PRBS signals. In addition, we have successfully mounted multi-channel transimpedance amplifiers and limiting amplifiers on the integrated photonic device using flipchip bonding technology.

© 2012 Optical Society of America

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