Results 11 to 20 of about 12,122 (206)
Optical Slot-Waveguide Based Biochemical Sensors [PDF]
Sensors, 2009 Slot-waveguides allow light to be guided and strongly confined inside a nanometer-scale region of low refractive index. Thus stronger light-analyte interaction can be obtained as compared to that achievable by a conventional waveguide, in which the ...
Carlos Angulo Barrios
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Low-loss slot waveguides with silicon (111) surfaces realized using anisotropic wet etching [PDF]
Frontiers in Materials, 2016 We demonstrate low-loss slot waveguides on silicon-on-insulator (SOI) platform. Waveguides oriented along the (11-2) direction on the Si (110) plane were first fabricated by a standard e-beam lithography and dry etching process.
Kapil Debnath +7 more
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Compact Silicon Slot Waveguide Intersection Based on Mode Transformation and Multimode Interference [PDF]
IEEE Photonics Journal, 2017 Silicon slot waveguide intersections are necessary for photonic-integrated circuits based on silicon slot waveguides. We theoretically investigate a compact silicon slot waveguide intersection, which consists of mode transformers and a multimode strip ...
Kyoung-Soo Kim +3 more
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Nanoimprint Fabrication of Slot Waveguides
IEEE Photonics Journal, 2013 A nanoimprint mold for optical waveguide applications was fabricated by combining photolithography and focused ion beam (FIB) milling. The feasibility of the proposed method was demonstrated by imprinting 15-mm-long Y-branch waveguides, which had ...
Marianne Hiltunen +5 more
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Ultra-high on-chip optical gain in erbium-based hybrid slot waveguides [PDF]
Nature Communications, 2019 Realizing efficient on-chip amplification in silicon is challenging due to either non-compatible integration or small gain per unit length of the amplifier material.
John Rönn +10 more
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Parametric optimization of the slot waveguide characteristics using a machine-learning approach [PDF]
Scientific ReportsSlot waveguides provide high electric field amplitude and optical power in low-index materials that are not possible with conventional waveguides. This specific property of the slot waveguide provides interaction between active material and electric ...
Yadvendra Singh +2 more
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Towards a millivolt optical modulator with nano-slot waveguides [PDF]
Optics Express, 2007 We describe a class of modulator design involving slot waveguides and electro-optic polymer claddings. Such geometries enable massive enhancement of index tuning when compared to more conventional geometries.
Baehr-Jones, Thomas +6 more
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Quadratic phase matching in slot waveguides [PDF]
Optics Letters, 2006 We analyze phase matching with reference to frequency doubling in nanosized quadratic waveguides encompassing form birefringence and supporting cross-polarized fundamental and second-harmonic modes. In an AlGaAs rod with an air void, we show that phase-matched second-harmonic generation could be achieved in a wide spectral range employing state-of-the ...
Andrea Di Falco +2 more
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Compact THz absorption spectroscopy using a LiNbO3 slot waveguide [PDF]
Light: Science & ApplicationsTHz spectroscopy is a powerful tool for studying a variety of samples, ranging from large biomolecules to solid-state materials. In cases where experimental space is limited or sample volumes are small, THz waveguides have been used to enable compact THz
Eric R. Sung, Keith A. Nelson
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Highly dispersive slot waveguides
Optics Express, 2009 We propose a slot-waveguide with high dispersion, in which a slot waveguide is coupled to a strip waveguide. A negative dispersion of up to -181520 ps/nm/km is obtained due to a strong interaction of the slot and strip modes. A flat and large dispersion is achievable by cascading the dispersive slot-waveguides with varied waveguide thickness or width ...
Lin, Zhang +4 more
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