Mid-infrared photonic crystal waveguides in silicon
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We demonstrate the design, fabrication and characterization of mid-infrared photonic crystal waveguides on a silicon-on-insulator platform, showing guided modes in the wavelength regime between 2.9 and 3.9 mu m. The characterization is performed with a proprietary intra-cavity Optical Parametric Oscillator in a free space optical setup and with a fibre coupled setup using a commercial Quantum Cascade Laser. We discuss the use of an integrated Mach-Zehnder interferometer for dispersion measurements and report a measured group velocity of up to a value of n(g) = 12, and determine the propagation loss to be 20 dB/cm.
Reimer , C , Nedeljkovic , M , Stothard , D J M , Esnault , M O S , Reardon , C , O'Faolain , L , Dunn , M , Mashanovich , G Z & Krauss , T F 2012 , ' Mid-infrared photonic crystal waveguides in silicon ' , Optics Express , vol. 20 , no. 28 , pp. 29361-29368 . https://doi.org/10.1364/OE.20.029361
© Copyright 2013, The Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.20.029361. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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