Low switching threshold using nonlinearities in stopband-tapered waveguide Bragg gratings

Low switching threshold using nonlinearities in stopband-tapered waveguide Bragg gratings

We numerically study the nonlinear switching characteristics in a waveguide grating with a linearly tapered stopband. This type of design shows promising results in decreasing the threshold switching power, while simultaneously preserving a significant extinction ratio. We find that the switching th...

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Veröffentlicht in:IEEE journal of quantum electronics 2005-10, Vol.41 (10), p.1303-1308
Hauptverfasser: Maitra, A., Poulton, C.G., Jin Wang, Leuthold, J., Freude, W.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Bandgap
Bragg gratings
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Extinction ratio
Fiber gratings
Fiber nonlinear optics
Frequency
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
Isolators
Nonlinear optics
Nonlinearity
Optical and optoelectronic circuits
Optical computers, logic elements, interconnects, switches
neural networks
Optical elements, devices, and systems
Optical fiber devices
optical isolators
Optical switches
Optical waveguides
Optics
periodic structures
Physics
Quantum electronics
Switches
Switching
Tapering
Thresholds
Waveguides
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Beschreibung
Zusammenfassung:We numerically study the nonlinear switching characteristics in a waveguide grating with a linearly tapered stopband. This type of design shows promising results in decreasing the threshold switching power, while simultaneously preserving a significant extinction ratio. We find that the switching threshold changes linearly with the tapering coefficient. The physical explanation for these phenomena is discussed. Potential applications for this type of device include all-optical switches and isolators.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2005.855117