Search Results - "Wadsworth, W.J"

Anomalous dispersion in photonic crystal fiber by Knight, J.C., Arriaga, J., Birks, T.A., Ortigosa-Blanch, A., Wadsworth, W.J., Russell, P.St.J.

“…We describe the measured group-velocity dispersion characteristics of several air-silica photonic crystal fibers with anomalous group-velocity dispersion at…”
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Dual-Wavelength-Pumped Supercontinuum Generation in an All-Fiber Device by Chunle Xiong, Zilun Chen, Wadsworth, W.J.

“…We experimentally demonstrate supercontinuum generation with a novel dual-wavelength pumping scheme. The dual-wavelength pump source and supercontinuum…”
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Very high numerical aperture fibers by Wadsworth, W.J., Percival, R.M., Bouwmans, G., Knight, J.C., Birks, T.A., Hedley, T.D., Russell, P.St.J.

“…Air-silica microstructured fibers are designed and fabricated to yield numerical aperture (NA) greater than 0.9. A model is presented which accurately predicts…”
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Solitons in Hollow Core Photonic Crystal Fiber: Engineering Nonlinearity and Compressing Pulses by Welch, M.G., Cook, K., Correa, R.A., Gerome, F., Wadsworth, W.J., Gorbach, A.V., Skryabin, D.V., Knight, J.C.

“…We have demonstrated nonlinear propagation in a 3-cell hollow core photonic crystal fiber. The reduced core size increases the nonlinear coefficient of the…”
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Self-phase modulation and spectral broadening in millimeter long self-written polymer waveguide integrated with single mode fibers by Mohammed, P.A., Wadsworth, W.J.

“…Polymer waveguide bridges up to 1.2 mm in length were optically written between two single-mode optical fibres. Optical Nonlinearity of polymer waveguide was…”
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Dual-wavelength-pumped supercontinuum generation in an all-fibre device by Xiong, C., Wadsworth, W.J.

“…We demonstrate supercontinuum generation with a novel dual-wavelength pumping scheme. The dual-wavelength pump source and supercontinuum generation were…”
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Absolute frequency measurement of iodine lines with a femtosecond optical synthesizer by Holzwarth, R., Nevsky, A.Yu, Zimmermann, M., Udem, Th, Hänsch, T.W., von Zanthier, J., Walther, H., Knight, J.C., Wadsworth, W.J., Russell, P.St.J., Skvortsov, M.N., Bagayev, S.N.

“…We have used a single laser femtosecond optical frequency synthesizer together with a widely tunable Nd:YAG laser to measure the absolute frequency of several…”
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Generation of a spectrally asymmetric third harmonic with unamplified 30-fs Cr :forsterite laser pulses in a tapered fiber by AKIMOV, D. A, IVANOV, A. A, NAUMOV, A. N, KOLEVATOVA, O. A, ALFIMOV, M. V, BIRKS, T. A, WADSWORTH, W. J, RUSSELL, P. St. J, PODSHIVALOV, A. A, ZHELTIKOV, A. M

“…Unamplified subnanojoule 30-fs pulses of Cr:forsterite laser radiation are shown to generate the third-harmonic signal in a tapered fiber. Analysis of the…”
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Two-octave spectral broadening of subnanojoule Cr:forsterite femtosecond laser pulses in tapered fibers by Akimov, D.A., Ivanov, A.A., Alfimov, M.V., Bagayev, S.N., Birks, T.A., Wadsworth, W.J., Russell, P.St.J., Fedotov, A.B., Pivtsov, V.S., Podshivalov, A.A., Zheltikov, A.M.

“…Spectral broadening of femtosecond Cr:forsterite laser pulses is enhanced due to the use of tapered fibers. Supercontinuum generation with unamplified…”
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Efficient distributed feedback solid state dye laser with a dynamic grating by Wadsworth, W.J., McKinnie, I.T., Woolhouse, A.D., Haskell, T.G.

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Low-loss splicing of photonic crystal fibres by controlled hole collapse by Chen, Z., Xiong, C., Xiao, L.M., Wadsworth, W.J., Birks, T.A.

“…Low-loss splices have been formed between small-core photonic crystal fibres and fibres with much larger mode field diameters. The PCF's core is enlarged using…”
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Narrowband all-fibre source of heralded single photons by McMillan, A.R., Fulconis, J., Haider, M., Rarity, J.G., Wadsworth, W.J.

“…We demonstrate an all-fibre source of near time-bandwidth limited, heralded single photons at 1570 nm. An output of 9.2 times 10 4 heralded photons per second…”
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Fibre source of intrinsically time bandwidth limited photon pairs by Fulconis, J., Halder, M., Clark, A., Cemlyn, B., O'Brien, J.L., Rarity, J.G., Xiong, C., Wadsworth, W.J.

“…We investigate a new phase-matching scheme for pure state photon pair generation in birefringent photonic crystal fibres. We demonstrate 80% visibility…”
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Micro-structured fibres - A versatile tool for quantum communications by Fulconis, J., Alibart, O., Rarity, J.G, Wadsworth, W.J.

“…Micro-structured fibres can serve as a new universal source for quantum information experiments. Using photon pairs created by four-wave mixing, we demonstrate…”
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Tapered fibres embedded in silica aerogel by Limin Xiao, Grogan, M.D.W., Leon-Saval, S.G., Williams, R., England, R., Wadsworth, W.J., Birks, T.A.

“…We embedded thin (down to 2 mum diameter) tapered fibres in silica aerogel with low loss. The aerogel is rigid but behaves refractively like air, protecting…”
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Quantum optics in micro-structured fibers by Rarity, J.G., Fulconis, J., Alibart, O., O'Brien, J.L., Wadsworth, W.J.

“…We have shown that four-wave mixing in micro-structured fibres can be a versatile source of photon pairs for quantum optics experiments. I will review the…”
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Visible continuum generation from a microchip 1062 nm laser source by Xiong, C., Witkowska, A., Birks, T.A., Wadsworth, W.J.

“…We demonstrate a cascaded nonlinear process in an all-fibre monolithic device. Four wave mixing followed by modulation instability generates bright single-mode…”
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Maximization of supercontinua in photonic crystal fibers by using double pulses and polarization effects by Kalashnikov, V L, Dombi, P, Fuji, T, Wadsworth, W J, Knight, J C, Russell, P S J, Windeler, R S, Apolonski, A

“…We show with sub-20 fs pulses both experimentally and theoretically two techniques to control the width and polarization of spectral supercontinua generated in…”
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Residual pump peak removal for ultra-flattened supercontinuum generation by photonic crystal fibers by Chunle Xiong, Leon-Sava, S.G., Couny, F., Wadsworth, W.J.

“…We demonstrate residual pump peak removal in supercontinuum generation using a fiber Bragg grating followed by nonlinear flattening in photonic crystal fibers…”
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Low-loss anamorphic transitions to high-aspect-ratio fibre cores by Lai, K., Witkowska, A., Leon-Saval, S.G., Wadsworth, W.J., Birks, T.A.

“…We used differential hole pressurisation and heat treatment to radically change the core shape along a piece of photonic crystal fibre, forming 0.1 dB loss…”
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