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Authors: W. Bogaerts, D. Taillaert, P. Dumon, D. Van Thourhout, R. Baets
Title: A polarization-diversity wavelength duplexer circuit in silicon-on-insulator photonic wires
Format: International Journal
Publication date: 2/2007
Journal/Conference/Book: Optics Express
Volume(Issue): 15(4) p.1567-1578
DOI: 10.1364/oe.15.001567
Citations: 195 (Dimensions.ai - last update: 6/10/2024)
140 (OpenCitations - last update: 3/5/2024)
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Abstract

We present a wavelength duplexer based on a compact
arrayed waveguide grating (AWG) in silicon-on-insulator (SOI) photonic wire waveguides. Polarization insensitive operation is achieved through a special polarization diversity approach in which we use 2-D grating fiber couplers as integrated polarization splitters. To mitigate the effects of process variations, we propagated both polarizations in opposite directions through the same AWG with a mere 600£350mm2 footprint. This resulted in an on-chip insertion loss between -2.1dB and -6.9dB, crosstalk of
-15dB, and only 0.66dB polarization dependent loss. This is the first demonstration of a functional polarization-diversity circuit implemented in
SOI nanophotonic waveguides, including interfaces to single-mode fiber.

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