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Proceedings Paper

Theoretical analysis of a novel polarization-insensitive AWG demultiplexer based on Si nanowire and slot waveguides
Author(s): Lei Zhao; Junming An; Jiashun Zhang; Shijiao Song; Yuanda Wu; Xiongwei Hu
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Paper Abstract

A new design for polarization-insensitive silicon-on-insulator (SOI) arrayed waveguide grating (AWG) is proposed. In arrayed waveguide region, Si nanowire waveguides and slot waveguides are combined to adjust the optical path differences. For the slot waveguides, the refractive indices of the TE and TM polarizations satisfy nTM>nTE while in the Si nanowire waveguides nTM<nTE, so the refractive indices of the TE and TM polarizations are complementary in these two kinds of waveguides. By calculating the relationship of Si nanowire waveguides and slot waveguides' length differences, optimizing the structure of slot waveguides and choosing the appropriate diffraction order, central channel wavelength and channel spacing can both reduce the polarization sensitivity greatly. The design process is given in detail and the simulation results demonstrate that the AWG demultiplexer can meet polarization insensitive demand.

Paper Details

Date Published: 18 November 2010
PDF: 6 pages
Proc. SPIE 7847, Optoelectronic Devices and Integration III, 78472A (18 November 2010); doi: 10.1117/12.869868
Show Author Affiliations
Lei Zhao, Institute of Semiconductors (China)
Junming An, Institute of Semiconductors (China)
Jiashun Zhang, Institute of Semiconductors (China)
Shijiao Song, Institute of Semiconductors (China)
Yuanda Wu, Institute of Semiconductors (China)
Xiongwei Hu, Institute of Semiconductors (China)

Published in SPIE Proceedings Vol. 7847:
Optoelectronic Devices and Integration III
Xuping Zhang; Hai Ming; Alan Xiaolong Wang, Editor(s)

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