Th4.4 - Post-Deadline Session 4
Chair: Dan Nolan, Corning Incorporated, United States

Post deadline sessions are all a standard 15 (12 +3) minutes.

Th4.4.1 16.00 – 16.15
Robust, Single-Moded, Broadband Transmission and Pulse Compression in a Record Aeff (2100 μm2) Higher-Order-Mode Fibre
S Ramachandran, J W Nicholson, S Ghalmi, M F Yan, P Wisk, E Monberg, F V Dimarcello, OFS Laboratories, United States

We utilise the LP07 mode of a specially designed fiber to achieve low-loss, bend-resistant, modecoupling-free light transmission over meter-lengths, in a record Aeff of 2100 ìm2. Its high-power tolerance is demonstrated by compressing pulses from a fs fiber laser to achieve 64-fs pulses with 52-kW peak powers.

Th4.4.2 16.15 – 16.30
Fast Optical Discharge Propagation through Optical Fibres under kW-Range Laser Radiation
I A Bufetov, A A Frolov, V P Efremov, M Ya Schelev, V I Lozovoi, V E Fortov, E M Dianov, Russian Academy of Sciences, Russia

The fast mode of optical discharge propagation in optical fibres has been discovered. In contrast to the known fibre fuse effect such optical discharge propagation is accompanied by fibre cracks and velocity reaches~3km/s under the intensity~40W/mcm^2.

Th4.4.3 16.30 – 16.45
Low Loss Large Mode Area Bragg Fibre
S Février, R Jamier, J-M Blondy, IRCOM, France, S L Semjonov, M E Likhachev, M M Bubnov, E M Dianov, Russian Academy of Sciences, Russia, V F Khopin,

M Y Salganskii, A N Guryanov, Institute of Chemistry of High Purity Substances, Russia
We report on the loss reduction in large mode area fibres using a mixed total-internal-reflexion and bandgap guidance mechanism. A 270-µm² mode area fibre exhibits 10-dB/km propagation loss at 1.064µm and low bend loss.

Th4.4.4 16.45 – 17.00
Broadband Wavelength Conversion over 193-nm by HNL-DSF Improving Higher-order Dispersion Performance
M Hirano, T Nakanishi, T Okuno, M Onishi, Sumitomo Electric Industries Ltd, Japan

Four-wave-mixing-based wavelength conversion over 193-nm bandwidth, fully covering from S- to U-bands, is demonstrated by a 100-metre-long HNL-DSF with improved b4 of 10-56 s4/m and zero-dispersion wavelength fluctuation within ± 0.1 nm.

Th4.4.5 17.00 – 17.15
Towards Zero Dispersion Highly Nonlinear Lead Silicate Glass Holey Fibres at 1550nm by Structured-element-stacking
J Y Y Leong, S Asimakis, F Poletti, P Petropoulos, X Feng, R C Moore, K E Frampton, T M Monro, H Ebendorff-Heidepriem, W H Loh, D J Richardson, University of Southampton, United Kingdom

We report the fabrication of lead-silicate holey fibres with a high nonlinearity up to 414W-1km-1 and low dispersion at 1550nm using a new fabrication technique based on the stacking of extruded structured elements.

Th4.4.6 17.15 – 17.30
Up to 22 dB Reduction of the Relative Intensity Noise of a Raman Fibre Laser
F Leplingard, C Martinelli, S Borne, L Lorcy, D Mongardien, D Bayart, Alcatel Research & Innovation, France

We reduce the average RIN of a Raman fibre laser by 15dB and demonstrate a RIN reduction of 22dB on the highest noise peaks. Our setup basically uses Raman-pump-to-Stokes RIN transfer in optimised conditions.

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