Silicon nanowire embedded circular photonic crystal fiber for nonlinear applications
24 Jul 2013-pp 524-526
TL;DR: In this paper, a silicon nanowire embedded circular photonic crystal fiber (SN-CPCF) was designed using finite element method (FEM) to study the optical properties at 1550 nm and observed that the fiber switches from anomalous dispersion to normal dispersion as and when the core diameter decreases from 400 nm to 300 nm.
Abstract: Using finite element method (FEM), we design a silicon nanowire embedded circular photonic crystal fiber (SN-CPCF). We study the different optical properties at 1550 nm. We observe that the fiber switches from anomalous dispersion to normal dispersion regime as and when the core diameter decreases from 400 nm to 300 nm. We obtain a large normal group velocity dispersion (14320 ps2/km) at 300 nm core diameter whereas we obtain a large anomalous group velocity dispersion (-5256 ps2/km) for 400 nm core diameter. In addition, the proposed fiber offers a less third order dispersion (-110 ps3/km) and a small effective mode area (0.053 μm2) which results in a large effective nonlinearity (690 W-1m-1) at 300 nm core diameter. These enhanced optical properties make the silicon nanophotonic wire an ideal platform for a variety of nonlinear applications.
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TL;DR: In this paper, a fabrication process for embedding a dense array (10(8) cm(-2)) of high-aspect-ratio silicon nanowires (200 nm diameter and 10 μm tall) in a dielectric matrix was developed.
Abstract: We developed a fabrication process for embedding a dense array (10(8) cm(-2)) of high-aspect-ratio silicon nanowires (200 nm diameter and 10 μm tall) in a dielectric matrix and then structured/exposed the tips of the nanowires to form self-aligned gate field emitter arrays using chemical mechanical polishing (CMP). Using this structure, we demonstrated a high current density (100 A cm(-2)), uniform, and long lifetime (>100 h) silicon field emitter array architecture in which the current emitted by each tip is regulated by the silicon nanowire current limiter connected in series with the tip. Using the current voltage characteristics and with the aid of numerical device models, we estimated the tip radius of our field emission arrays to be ≈4.8 nm, as consistent with the tip radius measured using a scanning electron microscope (SEM).
63 citations
References
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TL;DR: Air-clad subwavelength-diameter wires have interesting properties such as tight-confinement ability, enhanced evanescent fields and large waveguide dispersions that are very promising for developing future microphotonic devices with subwa wavelength-width structures.
Abstract: Single-mode optical wave guiding properties of silica and silicon subwavelength-diameter wires are studied with exact solutions of Maxwell's equations. Single mode conditions, modal fields, power distribution, group velocities and waveguide dispersions are studied. It shows that air-clad subwavelength-diameter wires have interesting properties such as tight-confinement ability, enhanced evanescent fields and large waveguide dispersions that are very promising for developing future microphotonic devices with subwavelength-width structures.
682 citations
TL;DR: Photonic nanowires provide the maximal confinement of light for index guiding structures enabling large enhancement of nonlinear interactions and group-velocity dispersion engineering, which makes them ideally suited for many nonlinear optical applications including the generation of single-cycle pulses and optical processing with sub-mW powers.
Abstract: We review recent research on nonlinear optical interactions in waveguides with sub-micron transverse dimensions, which are termed photonic nanowires. Such nanowaveguides, fabricated from glasses or semiconductors, provide the maximal confinement of light for index guiding structures enabling large enhancement of nonlinear interactions and group-velocity dispersion engineering. The combination of these two properties make photonic nanowires ideally suited for many nonlinear optical applications including the generation of single-cycle pulses and optical processing with sub-mW powers.
421 citations
TL;DR: A tutorial introduction to optical microfibers and nanofibers regarding their optical properties, fabrication and applications, with a brief outlook into future trends in this area is given in this article.
183 citations
TL;DR: In this article, an octagonal photonic crystal fiber (O-PCF) structure with eight air-holes on the first ring is proposed based on a unit isosceles triangle.
90 citations
Book•
04 Jun 2010
TL;DR: Optical waveguiding properties of MNFs: Theory and Numerical Simulations as discussed by the authors, Fabrication and Properties of MFDs: Experimental Investigations, MNF-based Photonic Components and Devices.
Abstract: Optical Waveguiding Properties of MNFs: Theory and Numerical Simulations.- Fabrication of MNFs.- Properties of MNFs: Experimental Investigations.- MNF-based Photonic Components and Devices.- Micro/nanofiber Optical Sensors.- More Applications.
76 citations