First, an alloptical switch aos architecture is developed for implementation in fibre optic frontend systems, where alloptical switching is the fundamental building block of alloptical processing. It should be noted that active plasmonics has also been used to. Typically, a wider bandgap semiconductor is added as a shell to enhance the gain from the quantumdot core. This cited by count includes citations to the following articles in scholar. Tailoring lightmatter coupling in semiconductor and hybrid. Alloptical active switching in individual semiconductor nanowires, nat. The switch concept was then extended into an all optical nanowire nand gate. It is extensively documented that the selfcatalyzed approach works well in molecular beam epitaxy but is much more difficult to implement in vapor phase epitaxies. In this paper, we report the first high bit rate operation for all optical signal processing in a silicon device. Tunable ultrafast optical switching via waveguided gold nanowires. These developments highlight the importance of semiconductor nanowires as both model materials systems and novel devices. Dilute tindoped cds nanowires for lowloss optical waveguiding. Vnwbased photonic array are investigated for utilization as an all in one gain medium, waveguide, and cavity.
We demonstrate all optical xor logic operation on a 40gbs 33% returnto. Dense twin faults are observed perpendicular to the nanowire growth direction due to the fluctuation of in atoms in the droplet originating from the surface diffusion effect. Researchers at the university of pennsylvania have made an important advance in this frontier of photonics, fashioning the first alloptical photonic switch out of cadmium sulfide nanowires. Silicon nanowire based exclusiveor gate using nonlinear. All optical nanoscale logic components are highly desired for various applications because light may enable logic functions to be performed extremely quickly without the generation of heat and crosstalk. Alloptical nanowire switch promises consumer photonics in.
Their combined citations are counted only for the first. Chinese aeronautical establishment, beijing 12, china 2. With each individual nanowire functioning as both the laser source and the mode filter for the other nanowire, dualcolor singlemode lasing was successfully achieved in the axially coupled heterogeneous nanowire resonators. The knowledge gained from these studies was put to use in the first demonstration of all optical switching in individual semiconductor nanowires. Alloptical active switching in individual semiconductor. Us7649665b2 apparatus and methods for optical switching. Apr 11, 2016 the majority of them relies on cavity effects, such as photonic crystal nanocavities 2, siliconbased microring resonator 3, individual semiconductor nanowires 4 and quantum zeno effect 5. Conventional optical tweezers, consisting of a tightly focused gaussian beam, have been used to trap semiconductor nanowires,11,14.
Sep 10, 2012 researchers at the university of pennsylvania have made an important advance in this frontier of photonics, fashioning the first all optical photonic switch out of cadmium sulfide nanowires. Beausoleil, picosecond alloptical switching in hydrogenated amorphous silicon microring. Alloptical nanowire switch promises consumer photonics. The present invention relates generally to switching optical path lines in an optical communication system and, more particularly, to an ultrafast, highsensitivity, waveguide, alloptical switch, made from singlewalled carbon nanotube swnt polymer composites, having a switching speed of less than 1 picosecond ps for light with a wavelength of about 1. May 19, 2010 dilute tindoped cds nanowires for lowloss optical waveguiding. Photonic architectures for ultrafast alloptical switching.
Moreover, they combined these photonic switches into a logic gate, a fundamental component of computer chips that process information. Aug 21, 2017 shaping the light distribution with facet designs in lithium niobate nanowaveguides. Beijing key laboratory for advanced functional materials and thin film technology, school of material science and engineering, beihang. Building on their earlier research, scientists at the university of pennsylvania have made the first all optical photonic switch out of cadmium sulfide nanowires, an important advance in photonics. Here, we demonstrate alloptical switching in individual cds nanowire cavities with subwavelength dimensions through stimulated polariton scattering, as well as a. Pdf we demonstrated alloptical switching using a hybrid nanocavity. Ultracompact alloptical logic gates based on nonlinear. Pdf nanowire networkbased multifunctional alloptical logic gates. Optical switches based on cds single nanowire sciencedirect. Light occurring on an optical transistors input changes the intensity of light emitted from the transistors output while output power is supplied by an additional optical source. Researchers make first alloptical nanowire switch 10 september 2012 laser light is emitted from the end of a cadmium sulfide nanowire. Cds nanowires have been synthesized by a compositehydroxidemediated approach. This has led to a host of nanowire photonic devices including photodetectors, chemical and gas.
Nanowire networkbased multifunctional alloptical logic. We experimentally demonstrate a hybrid structure microlaser on chip with a single cdse nanowire attached to a highq silica microdisk cavity at room temperature. Shaping the light distribution with facet designs in lithium niobate nanowaveguides. Switching speed and switching frequency measurements for the electrically controlled spdt optical switch. Alloptical active switching in individual semiconductor nanowires. Pdf alloptical nanoscale logic components are highly desired for various applications.
Ultrasmall alloptical plasmonic switch and its application to. It is also used as an important element in optical switching, all optical signal processing, demultiplexing, regeneration and wavelength conversion. Adequate designs of periodic arrays of inp nws with different. The switch concept was then extended into an alloptical nanowire nand gate. The unique mode selection mechanism in the heterogeneously coupled nanowires was elucidated experimentally and theoretically.
Flexible integration of freestanding nanowires into silicon photonics. Although there was a space charge limited current behavior at small. Photonic switching devices based on semiconductor nanostructures. Tunable ultrafast optical switching via waveguided gold. Wide bandgap gallium nitride gan, zinc oxide zno, and cadmium sulfide cds nanowires reveal laser onset times of a few picoseconds, driven by carrier thermalization within the optically excited semiconductor. Ultrafast alloptical switch using carbon nanotube polymer.
Scherer, the james franck institute, the university of chicago, 929 east 57th street, chicago, illinois 60637, united states center for nanoscale materials, argonne national laboratory, 9700. The knowledge gained from these studies was put to use in the first demonstration of alloptical switching in individual semiconductor nanowires. All optical active switching in individual semiconductor nanowires. Quantum dotbased local field imaging reveals plasmonbased interferometric logic in silver nanowire networks. After investigating propagation loss in individual cds nanowires, the theoretical model was then refined to quantify the strength of lightmatter coupling, where sizedependence was observed. Jan, 2017 we report on the selfcatalyzed growth of inas nanowires on inp substrate by metalorganic chemical vapor deposition. Shaping the light distribution with facet designs in lithium. Asymmetric photon transport in organic semiconductor nanowires through electrically controlled exciton diffusion. However, constrained by the optical diffraction limit, the dimension of semiconductor lasers cannot be smaller.
At a moderate viii ratio, tapered nanowires are obtained, suggesting a strong surface diffusion effect. Tailoring lightmatter coupling in semiconductor and. Shaping the light distribution with facet designs in. Propagation loss spectroscopy on single nanowire active. Induced transparency, advanced optical materials, 2, 12, 11411148, 2014. They are therefore ideal candidates for nanoscale optical network components, as well as model systems for understanding optical confinement. Semiconductor nanowires have attracted extensive attention due to the demand from electronic, optoelectronic. Selfcatalyzed growth of inas nanowires on inp substrate pdf. Subfemtojoule alloptical switching using a photoniccrystal nanocavity. We demonstrate nanoscale alloptical switches by exploiting the. Because of their high refractive indices n 2, the nanoribbons and wires described here function well as waveguides in water and other liquids. Here, we demonstrate all optical switching in individual cds nanowire cavities with subwavelength dimensions through stimulated polariton scattering, as well as a functional nand gate built from.
All optical active switching in individual semiconductor nanowires brian piccione, changhee cho, lambert k. Abstractsemiconductor nanowires nw hold great promise for micronanolasers owing to their naturally formed resonant microcavity, tightly confined electromagnetic field, and outstanding capability of integration with planar waveguide for onchip optoelectronic applications. When pumped by a 532 nm pulse laser, both singlelongitudinal mode and multilongitudinal mode lasers with linewidth of 0. Longterm mutual phase locking of picosecond pulse pairs. Selfcatalyzed growth of inas nanowires on inp substrate. Onedimensional polaritons with sizetunable and enhanced coupling. Ultrafast dynamics of lasing semiconductor nanowires. Recently, semiconductor nanowires nws have been configured into a. A new technique is reported where by combining spatially and spectrally resolved scanning optical microscopy on single nanowire active waveguides, waveguide propagation loss and dispersion can be determined. Ultrasmall alloptical plasmonic switch and its application to superresolution imaging. Nevertheless, nanophotonics for single nw gsls is a relatively new research topic and. The nanowires with smooth aplane sidewalls have hexagonal geometry were made by top down etching.
Beijing key laboratory for advanced functional materials and thin film technology, school of material science and engineering, beihang university, beijing 100191, china. The application of semiconductor optical amplifiers soas is not limited only to the amplification of optical signals. Laser light is emitted from the end of a cadmium sulfide nanowire. Sapph laser coherent chameleon ultra ii at 458 nm with an average power density of approximately 100. Building on their earlier research, scientists at the university of pennsylvania have made the first alloptical photonic switch out of cadmium sulfide nanowires, an important advance in photonics. A the optical image showing that, after a single combing, 10 algaas and. Goldfree gaas nanowires on silicon substrates can pave the way for monolithic integration of photonic nanodevices with silicon electronic platforms. Fan zhang, xiaoyong hu, hong yang and qihuang gong, lowpower alloptical tunable plasmonicmode coupling in. An apparatus and methods for optical switching using nanoscale optics are disclosed herein. Semiconductor nanowires have attracted much attention for their applications in nanophotonic circuits 1, 2, such as subwavelength waveguides 3, led 4, nanolasers 5 11, alloptical switching 12 and so on. Optical routing and sensing with nanowire assemblies. Moss1 1centre for ultrahighbandwidth devices for optical systems cudos, institute of photonics and optical science ipos, school of physics, the university of sydney, nsw 2006, australia. Because the size of individual nanowires is much smaller than the thickness of the sample thin film, which is prepared by casting the dispersed cds nanowires in ethanol solution on.
Threedimensional optical trapping and manipulation of single. The research, which was published in the journal nature nanotechnology alloptical active switching in individual semiconductor nanowires, not only succeeded in fashioning a switch from. To improve the photophysical performance of colloidal quantum dots for laser applications, sophisticated coreshell geometries have been developed. The characterization of the nanowire with xray diffraction, scanning electron microscopy, and transmission electron microscopy indicated a singlecrystalline hexagonal structure growing along 2 1. Lk van vugt, b piccione, ch cho, p nukala, r agarwal. All optical computing at nanoscale is therefore a promising alternative but requires the development of a complete toolbox capable of various logic functionalities. The waveguide propagation loss spectra have been utilized to obtain insights into the optical absorption spectra of these unique nanostructured materials, which are modified in comparison. It is also used as an important element in optical switching, alloptical signal processing, demultiplexing, regeneration and wavelength conversion. In particular, single semiconductor nanowire lasers. Osa optical mode study of iiivnanowirebased nanophotonic.
The nanowires transistor exhibited enhancement mode operation with threshold voltage of 1. All optical active switching in individual semiconductor nanowires brian piccione, changhee cho, lambert k van vugt, and ritesh agarwal nanowire lasing nanowires were optically pumped to lasing conditions using a frequencydoubled ti. A nanooptics apparatus for use as an optical switch includes a metallic film having a top surface, a bottom surface and a plurality of cylindrical channels containing a dielectric material, the metallic film acting as an outer electrode. After investigating propagation loss in individual cds nanowires, the theoretical model was then refined to. This shell is designed to electronically isolate the core, funnel excitons to it, and reduce nonradiative auger recombination. Optical switching via waveguided gold nanowires is achieved. Vnanowire nwbased photonic array for onchip interconnects. Threedimensional optical trapping and manipulation of. Largescale fabrication of tellurium nanowire arrays by. Sep 10, 2012 it was published in the journal nature nanotechnology alloptical active switching in individual semiconductor nanowires.
Semiconductor nanowire lasers operate at ultrafast timescales. An optical transistor, also known as an optical switch or a light valve, is a device that switches or amplifies optical signals. Integration of photonic nanojets and semiconductor. Microlaser based on a hybrid structure of a semiconductor.
The research teams innovation built upon their earlier research, which showed that their cadmium sulfide nanowires exhibited extremely strong light. Optical switching an overview sciencedirect topics. Very recently, photonic switches based on single qds have been. Dualcolor singlemode lasing in axially coupled organic.
Lieber, semiconductor nanowire laser and nanowire waveguide electrooptic modulators, appl. Computers may be getting faster every year, but those advances in computer speed could be dwarfed i. The majority of them relies on cavity effects, such as photonic crystal nanocavities 2, siliconbased microring resonator 3, individual semiconductor nanowires 4 and quantum zeno effect 5. The goal of this chapter is to present design criteria, improvement of the. Silicon nanowire based exclusiveor gate using nonlinear optics for 40gbs dpsk signals f. Under the protection of the quartz glass, the deformation of ag nps during laser writing can be well. Our results underscore the promise of assembled semiconductor nanowire networks as a building block of onchip alloptical logic components for future nanophotonics. Alloptical active switching in individual semiconductor nanowires brian piccione, changhee cho, lambert k van vugt, and ritesh agarwal nanowire lasing nanowires were optically pumped to lasing conditions using a frequencydoubled ti. Asymmetric photon transport in organic semiconductor. Selfcatalyzed gaas nanowires on silicon by hydride vapor. Here, we demonstrate alloptical switching in individual cds nanowire cavities with subwavelength dimensions through stimulated polariton scattering, as well as a functional nand gate built from. Alloptical active switching in individual semiconductor nanowires brian piccione, changhee cho, lambert k. In comparison to components fabricated using topdown methods, semiconductor nanowires offer superior surface properties and stronger optical confinement.