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Authors: S. Pathak, P. Dumon, D. Van Thourhout, W. Bogaerts
Title: Comparison of AWGs and Echelle Gratings for Wavelength Division Multiplexing on Silicon-On-Insulator
Format: International Journal
Publication date: 10/2014
Journal/Conference/Book: IEEE Photonics Journal
Editor/Publisher: IEEE, 
Volume(Issue): 6(5) p.4900109
Internal Reference: [N-1641]
DOI:
Download: Download this Publication (992KB) (992KB)

Abstract

We compare the performance of silicon based arrayed waveguide gratings (AWGs) and echelle gratings for different channel spacings. For high resolution de/multiplexer applications AWGs are the better choice, while echelle gratings perform well for low resolution de/multiplexer applications. Alternatively, for low resolution de/multiplexer applications the conventional box-shaped AWG can be modified by an S-shaped AWG. We report crosstalk as low as -27 dB for regular AWGs, while in the S-shaped AWGs the crosstalk is better than -19 dB, with an insertion loss below -2 dB.

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