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Optical Engineering

Design of 1×8 silicon nanowire arrayed waveguide grating for on-chip arrayed waveguide grating demodulation integration microsystem
Author(s): Hongqiang Li; Enbang Li; Zhihui Liu; Kejia Wei; Xiaye Dong; Yaoting Bai
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Paper Abstract

The integration of fiber grating demodulation system is a research emphasis in the study of demodulation systems. On-chip arrayed waveguide grating (AWG) demodulation integration makes integration possible in a demodulation system. A 1×8 silicon nanowire AWG for on-chip AWG demodulation integration microsystem is proposed and designed. The center wavelength is 1550.918 nm, the waveguide width is 350 nm, the waveguide thickness is 220 nm, and the effective area is 267×259  μm2. The single-mode waveguide cross-section structure is designed according to the refractive index of the silicon-on-insulator material. The mask layout territory of the 1×8 AWG is designed and optimized using the beam propagation method. A cone-shaped mold spots converter is proposed in the design process. Furthermore, the wavelength-division-multiplexing-phasar simulation system is established to simulate the stable output optical propagation characteristics of the designed AWG. The simulation result shows that the insert loss of the AWG is 10.658 dB, and the crosstalk is 3.037 dB, which is lower under the same waveguide, thickness, and size. This condition makes the AWG design the best choice for a fiber Bragg grating demodulation microsystem.

Paper Details

Date Published: 4 December 2012
PDF: 5 pages
Opt. Eng. 51(12) 123001 doi: 10.1117/1.OE.51.12.123001
Published in: Optical Engineering Volume 51, Issue 12
Show Author Affiliations
Hongqiang Li, Tianjin Polytechnic Univ. (China)
Enbang Li, The Univ. of Sydney (Australia)
Zhihui Liu, Tianjin Polytechnic Univ. (China)
Kejia Wei, Tianjin Polytechnic Univ. (China)
Xiaye Dong, Tianjin Polytechnic Univ. (China)
Yaoting Bai, Tianjin Polytechnic Univ. (China)

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