Journal
OPTICS EXPRESS
Volume 20, Issue 28, Pages 29361-29368Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.029361
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Funding
- EPSRC through the UK Silicon Photonics
- Royal Society
- Structured Light Programme Grants
- EPSRC [EP/F001622/1, EP/J01771X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F001622/1, EP/J01771X/1] Funding Source: researchfish
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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. (C) 2012 Optical Society of America
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