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HuskoUltracompactAllOpticalXORLogicGate2011.pdf1.97 MBAdobe PDFView/Open
Title: Ultracompact all-optical XOR logic gate in a slow-light silicon photonic crystal waveguide
Authors: Husko, C.
Vo, T. D.
Corcoran, B.
Li, Juntao
Krauss, Thomas Fraser
Eggleton, B. J.
Keywords: Photonic crystal waveguides
Phase modulation
Optical logic devices
QC Physics
Issue Date: 10-Oct-2011
Citation: Husko , C , Vo , T D , Corcoran , B , Li , J , Krauss , T F & Eggleton , B J 2011 , ' Ultracompact all-optical XOR logic gate in a slow-light silicon photonic crystal waveguide ' Optics Express , vol 19 , no. 21 , pp. 20681-20690 .
Abstract: We demonstrate an ultracompact, chip-based, all-optical exclusive-OR (XOR) logic gate via slow-light enhanced four-wave mixing (FWM) in a silicon photonic crystal waveguide (PhCWG). We achieve error-free operation (<10(-9)) for 40 Gbit/s differential phase-shift keying (DPSK) signals with a 2.8 dB power penalty. Slowing the light to v(g) = c/32 enables a FWM conversion efficiency, eta, of -30 dB for a 396 mu m device. The nonlinear FWM process is enhanced by 20 dB compared to a relatively fast mode of v(g) = c/5. The XOR operation requires approximate to 41 mW, corresponding to a switching energy of 1 pJ/bit. We compare the slow-light PhCWG device performance with experimentally demonstrated XOR DPSK logic gates in other platforms and discuss scaling the device operation to higher bit-rates. The ultracompact structure suggests the potential for device integration. (C) 2011 Optical Society of America
Version: Publisher PDF
Status: Peer reviewed
URI: http://hdl.handle.net/10023/2810
DOI: http://dx.doi.org/10.1364/OE.19.020681
ISSN: 1094-4087
Type: Journal article
Rights: (c) 2011 OSA. 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 http://www.opticsinfobase.org
Appears in Collections:University of St Andrews Research
Physics & Astronomy Research



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