Arrayed waveguide gratings (AWGs) are used to accomplish complex functionalities in dense wavelength division multiplexing networks, as well as in signal processing, measurement, characterization or sensing. In this work, we discuss the design and the experimental characterization of a 6 × 400 GHz channelspaced AWG to be used as wavelength multiplexer/demultiplexerin a silicon-on-insulator based optical transport network. We adopted a whiskered-shaped star coupler design to investigate how the reduction in the reflectivity of the free propagation region boundaries affects the overall performances of the AWG. We demonstrated 2.9 dB insertionloss, which does not include fiber coupling loss, and (-24.4 ± 0.1) dB crosstalk for a design realized with a single etching technique. Moreover, we demonstrated an efficient finetuning (7.5 nm/W) of the spectral position of the AWG output channels.

Methods for Low Crosstalk and Wavelength Tunability in Arrayed-Waveguide Grating for On-Silicon Optical Network / Tondini, Stefano; Castellan, Claudio; Mancinelli, Mattia; Kopp, Christophe; Pavesi, Lorenzo. - In: JOURNAL OF LIGHTWAVE TECHNOLOGY. - ISSN 0733-8724. - 35:23(2017), pp. 5134-5141. [10.1109/JLT.2017.2768161]

Methods for Low Crosstalk and Wavelength Tunability in Arrayed-Waveguide Grating for On-Silicon Optical Network

Tondini, Stefano;Castellan, Claudio;Mancinelli, Mattia;Lorenzo Pavesi
2017-01-01

Abstract

Arrayed waveguide gratings (AWGs) are used to accomplish complex functionalities in dense wavelength division multiplexing networks, as well as in signal processing, measurement, characterization or sensing. In this work, we discuss the design and the experimental characterization of a 6 × 400 GHz channelspaced AWG to be used as wavelength multiplexer/demultiplexerin a silicon-on-insulator based optical transport network. We adopted a whiskered-shaped star coupler design to investigate how the reduction in the reflectivity of the free propagation region boundaries affects the overall performances of the AWG. We demonstrated 2.9 dB insertionloss, which does not include fiber coupling loss, and (-24.4 ± 0.1) dB crosstalk for a design realized with a single etching technique. Moreover, we demonstrated an efficient finetuning (7.5 nm/W) of the spectral position of the AWG output channels.
2017
23
Tondini, Stefano; Castellan, Claudio; Mancinelli, Mattia; Kopp, Christophe; Pavesi, Lorenzo
Methods for Low Crosstalk and Wavelength Tunability in Arrayed-Waveguide Grating for On-Silicon Optical Network / Tondini, Stefano; Castellan, Claudio; Mancinelli, Mattia; Kopp, Christophe; Pavesi, Lorenzo. - In: JOURNAL OF LIGHTWAVE TECHNOLOGY. - ISSN 0733-8724. - 35:23(2017), pp. 5134-5141. [10.1109/JLT.2017.2768161]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/192378
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