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Yeom, Dong Il
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article
Highly nonlinear chalcogenide fibres for all-optical signal processing
Abstract
<p>Chalcogenide glasses offer many attractive properties for all-optical signal processing including large Kerr nonlinearity (up to 500 × silica glass), an intrinsic ultrafast response time and low to moderate two-photon absorption (TPA). These properties together with the convenience of a fibre format allow us to achieve all-optical signal processing at low peak power and in a very compact form. In this paper, several nonlinear processing functions will be demonstrated including: femto-second pedestal free, pulse compression; all-optic wavelength conversion; and all-optical regenerator. In addition, we show enhanced nonlinearity for more efficient signal processing by tapering the As <sub>2</sub>Se <sub>3</sub> fibre. These applications show chalcogenide glass fibres are very promising candidate materials for nonlinear all-optic signal processing.</p>