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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Ali, M. A. |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Taeed, Vahid G.
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Topics
Publications (11/11 displayed)
- 2008Applications of highly-nonlinear chalcogenide glass devices tailored for high-speed all-optical signal processingcitations
- 2008Chalcogenide glass photonic chipscitations
- 2007Highly nonlinear chalcogenide fibres for all-optical signal processingcitations
- 2007Chalcogenide glass advanced for all-optical processing
- 2007Broadband wavelength conversion at 40 Gb/s using long serpentine As 2S3 planar waveguidescitations
- 2007Highly nonlinear single-mode chalcogenide fibres for signal processing
- 2007Higher-order mode grating devices in As2S3 chalcogenide glass rib waveguidescitations
- 2007Ultrafast all-optical chalcogenide glass photonic circuitscitations
- 2006Self-phase modulation-based integrated optical regeneration in chalcogenide waveguidescitations
- 2006All optical wavelength conversion via cross phase modulation in chalcogenide glass rib waveguidescitations
- 2006High-performance Bragg gratings in chalcogenide rib waveguides written with a modified Sagnac interferometercitations
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article
Applications of highly-nonlinear chalcogenide glass devices tailored for high-speed all-optical signal processing
Abstract
<p>Ultrahigh nonlinear tapered fiber and planar rib Chalcogenide waveguides have been developed to enable highspeed all-optical signal processing in compact, low-loss optical devices through the use of four-wave mixing (FWM) and cross-phase modulation (XPM) via the ultra fast Kerr effect. Tapering a commercial As<sub>2</sub> Se<sub>3</sub> fiber is shown to reduce its effective core area and enhance the Kerr nonlinearity thereby enabling XPM wavelength conversion of a 40 Gb/s signal in a shorter 16-cm length device that allows a broader wavelength tuning range due to its smaller net chromatic dispersion. Progress toward photonic chip-scale devices is shown by fabricating As <sub>2</sub>S<sub>3</sub> planar rib waveguides exhibiting nonlinearity up to 2080 W<sup>-1</sup> · km<sup>-1</sup> and losses as low as 0.05 dB/cm. The material's high refractive index, ensuring more robust confinement of the optical mode, permits a more compact serpentine-shaped rib waveguide of 22.5 cm length on a 7-cmsize chip, which is successfully applied to broadband wavelength conversion of 40-80 Gb/s signals by XPM. A shorter 5-cm length planar waveguide proves most effective for all-optical time-division demultiplexing of a 160 Gb/s signal by FWM and analysis shows its length is near optimum for maximizing FWM in consideration of its dispersion and loss.</p>