Search Results - "Cunningham, John E"
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Ultralow-loss, high-density SOI optical waveguide routing for macrochip interconnects
Published in Optics express (21-05-2012)“…We report optical waveguides up to one meter long with 0.026 dB/cm loss fabricated in a 300nm thick SOI CMOS process. Combined with tight bends and compact…”
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2
Terahertz spectroscopy of explosives and drugs
Published in Materials today (Kidlington, England) (01-03-2008)“…Terahertz frequency radiation possesses a unique combination of desirable properties for noninvasive imaging and spectroscopy of materials. This includes the…”
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3
Terahertz microscopy using laser feedback interferometry based on a generalised phase-stepping algorithm
Published in Scientific reports (08-02-2024)“…In this paper we report an improved method of coherent sensing through the use of a generalized phase-stepping algorithm to extract magnitude and phase…”
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4
On-Chip Terahertz-Frequency Measurements of Liquids
Published in Analytical chemistry (Washington) (01-08-2017)“…Terahertz-frequency-range measurements can offer potential insight into the picosecond dynamics, and therefore function, of many chemical systems. There is a…”
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5
On-Chip Picosecond Pulse Detection and Generation Using Graphene Photoconductive Switches
Published in Nano letters (11-03-2015)“…We report on the use of graphene for room temperature on-chip detection and generation of pulsed terahertz (THz) frequency radiation, exploiting the fast…”
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6
Improving CMOS-compatible Germanium photodetectors
Published in Optics express (19-11-2012)“…We report design improvements for evanescently coupled Germanium photodetectors grown at low temperature. The resulting photodetectors with 10 μm Ge length…”
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7
10-Gbps, 5.3-mW Optical Transmitter and Receiver Circuits in 40-nm CMOS
Published in IEEE journal of solid-state circuits (01-09-2012)“…We describe transmitter and receiver circuits for a 10-Gbps single-ended optical link in a 40-nm CMOS technology. The circuits are bonded using low-parasitic…”
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8
Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers
Published in Nature communications (06-08-2018)“…Single-mode frequency-tuneable semiconductor lasers based on monolithic integration of multiple cavity sections are important components, widely used in…”
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9
Progress in Low-Power Switched Optical Interconnects
Published in IEEE journal of selected topics in quantum electronics (01-03-2011)“…Optical links have successfully displaced electrical links when their aggregated bandwidth-distance product exceeds ~100 Gb/s-m because their link energy per…”
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10
Determination of the Permittivity of Transmission Lines at Milli-kelvin Temperatures
Published in IEEE access (01-01-2023)“…Many quantum technologies rely heavily on propagation of RF and microwave signals through devices at cryogenic temperatures, and detailed understanding of…”
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11
Excitation, detection and electrostatic manipulation of terahertz-frequency range plasmons in a two-dimensional electron system
Published in Scientific reports (21-10-2015)“…Terahertz frequency time-domain spectroscopy employing free-space radiation has frequently been used to probe the elementary excitations of low-dimensional…”
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12
Optical conductivity of a Bi2Se3 topological insulator with a THz transparent top gate
Published in Nanophotonics (Berlin, Germany) (29-04-2024)“…We have performed an investigation into the optical conductivity and magnetotransport properties of top-gated devices patterned on the topological insulator Bi…”
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13
Spectroscopy of polycrystalline materials using thinned-substrate planar Goubau line at cryogenic temperatures
Published in Lab on a chip (21-10-2013)“…We investigate the effect of substrate thickness on the transmission bandwidth of on-chip terahertz-frequency-range planar Goubau lines both experimentally and…”
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14
Time-domain measurement of terahertz frequency magnetoplasmon resonances in a two-dimensional electron system by the direct injection of picosecond pulsed currents
Published in Applied physics letters (29-02-2016)“…We have investigated terahertz (THz) frequency magnetoplasmon resonances in a two-dimensional electron system through the direct injection of picosecond…”
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15
Author Correction: Ultrafast switch-on dynamics of frequency-tuneable semiconductor lasers
Published in Nature communications (30-11-2018)“…The original version of this Article contained an error in the Acknowledgements, which incorrectly omitted the following: ‘We also acknowledge support from the…”
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16
An all-solid-state, WDM silicon photonic digital link for chip-to-chip communications
Published in Optics express (18-05-2015)“…We describe a multiwavelength hybrid-integrated solid-state link on a 3 µm silicon-on-insulator (SOI) nanophotonic platform. The link spans three chips and…”
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17
Effect of Molecular Size and Particle Shape on the Terahertz Absorption of a Homologous Series of Tetraalkylammonium Salts
Published in Analytical chemistry (Washington) (20-08-2013)“…The absorption coefficient and refractive index have been measured for a homologous series of tetraalkylammonium bromides over the frequency range 0.3–5.5 THz…”
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18
Broadband terahertz time-domain spectroscopy of drugs-of-abuse and the use of principal component analysis
Published in Analyst (London) (01-01-2009)“…Terahertz frequency time-domain spectroscopy has been used to analyse a wide range of samples containing cocaine hydrochloride, heroin and ecstasy--common…”
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19
Optical proximity communication using reflective mirrors
Published in Optics express (15-09-2008)“…Optical proximity communication (OPxC) with reflecting mirrors is presented. Direct optical links are demonstrated for silicon chips with better than -2.5dB…”
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20
Thermally tunable silicon racetrack resonators with ultralow tuning power
Published in Optics express (13-09-2010)“…We present thermally tunable silicon racetrack resonators with an ultralow tuning power of 2.4 mW per free spectral range. The use of free-standing silicon…”
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