Berry Phase of Nonlinear Correction (2009)
We investigate the geometric phase or Berry phase of adiabatic quantum evolution in the Bose-Einstein condensate (BEC) systems governed by nonlinear Gross-Pitaevskii(GP) equations. We study how this...
on 16-chip, 20 Gchip/s superstructure fibre Bragg gratings and DFB fibre laser transmitters (2007)
P. C. Teh, M. Ibsen, L. B. Fu, J. H. Lee, Z. Yusoff, D. J. Richardson
Abstract: We demonstrate an all-fibre OCDMA system comprising 16 channels (4 OCDM x 4 WDM, 100 GHz grid) incorporating DFB fibre lasers as transmitters and 16-chip, 20 Gchip/s quaternary phase...
Single-Polarization All-fiber DFB Laser with Keyed Axis Output (2007)
L. B. Fu, M Ibsen, P. W. Turner, D. J. Richardson, D. N. Payne
Abstract: A single-polarized fiber DFB laser with keyed axis output is demonstrated from a Dshaped fibre configuration. The laser shows an output power of 3.8dBm and strong axis alignment when...
Effect of Decoherence on the Dynamics of Bose-Einstein Condensates in a Double-well Potential (2007)
Wang, W., Fu, L. B., Yi, X. X.
We study the dynamics of a Bose-Einstein condensate in a double-well potential in the mean-field approximation. Decoherence effects are considered by analyzing the couplings of the condensate to...
Fu, L. B, Fuerbach, A, Littler, I. C. M, Eggleton, B. J
We demonstrate efficient compression of low-power 6ps pulses down to 420fs pedestal free pulses at 1.5µm in an all-fiber scheme employing only 4m of As₂Se₃ fiber and a tailored chirped fiber...
Compact high-power tunable three-level operation of double cladding Nd-doped fiber laser (2005)
Fu, L.B., Ibsen, M., Richardson, D.J., Nilsson, J., Payne, D.N., Grudinin, A.B.
We present a compact high-power continuous-wave tunable neodymium-doped double cladding fiber laser operating on three-level /sup 4/F/sub 3/2/-I/sub 9/2/ transition with a maximum output power up to...
Femtosecond laser writing Bragg gratings in pure silica photonic crystal fibres (2005)
Fu, L. B, Marshall, G. D, Bolger, J. A, Steinvurzel, P, Mägi, E. C, Withford, M. J, ...
The fabrication of Bragg gratings in pure silica photonic crystal fibres using ultra-violet femtosecond laser radiation at 267 nm is reported. Gratings have been fabricated with a depth of up to 10...
Femtosecond laser writing Bragg gratings in pure silica photonic crystal fibres (2005)
Fu, L. B, Marshall, G. D, Bolger, J. A, Steinvurzel, P, Mägi, E. C, Withford, M. J, ...
The fabrication of Bragg gratings in pure silica photonic crystal fibres using ultra-violet femtosecond laser radiation at 267 nm is reported. Gratings have been fabricated with a depth of up to 10...
Femtosecond laser writing Bragg gratings in pure silica photonic crystal fibres (2005)
Fu, L. B, Marshall, G. D, Bolger, J. A, Steinvurzel, P, Mägi, E. C, Withford, M. J, ...
The fabrication of Bragg gratings in pure silica photonic crystal fibres using ultra-violet femtosecond laser radiation at 267 nm is reported. Gratings have been fabricated with a depth of up to 10...
Intensity noise suppression in fibre DFB laser using gain saturated SOA (2004)
McCoy, A.D., Fu, L.B., Ibsen, M., Thomsen, B.C., Richardson, D.J.
Experimental results of a simple, all-optical technique to reduce low-frequency intensity noise in an Er-Yb codoped fibre distributed feedback (DFB) laser are reported. This method utilises the gain...
977-nm all-fiber DFB laser (2004)
Fu, L.B., Ibsen, M., Richardson, D.J., Payne, D.N.
Three-level operation of a fiber distributed feedback (DFB) laser operating around 980 nm is demonstrated for the first time. The ytterbium-doped DFB laser shows a maximum slope efficiency of 61% and...
McCoy, A.D., Fu, L.B., Ibsen, M., Thomsen, B.C., Richardson, D.J.
We report the experimental results of a simple, all optical technique to reduce the relative intensity noise peak of a fibre distributed feedback laser. A noise reduction of 30dB is achieved.
Three-level fiber DFB laser at 980 nm (2004)
Fu, L.B., Ibsen, M., Richardson, D.J., Payne, D.N.
A three-level fiber DFB-laser operating at 977nm is demonstrated for the first time using a 910 nm pump diode. The fiber DFB laser shows 17.5 mW output power under a launching power of 113 mW.
High power, low noise Yb-doped cladding-pumped three-level fiber sources at 980 nm (2003)
Selvas, R., Yla-Jarkko, K., Sahu, J.K., Fu, L.B., Jang, J.N., Nilsson, J., ...
We present results on a high-power, cladding-pumped, Yb-doped fiber emitting at 977nm in laser and ampllified-spontaneous-emission source configurations. We obtained up to 1.4W of fiber-coupled,...
Fiber-DFB laser array pumped with a single 1W cw Yb-fiber laser (2003)
Fu, L.B., Selvas, R., Ibsen, M., Sahu, J.K., Jang, J.N., Alam, S.U., ...
A 50-GHz grid fiber distributed feedback laser wavelength-division-multiplexing transmitter source is demonstrated pumped by a single continuous-wave Yb-fiber laser source at 977 nm. Up to 21 mW of...
Erbium-ytterbium L-band fibre-DFB laser pumped at 1534nm (2003)
Fu, L.B., Ibsen, M., Nilsson, J., Richardson, D.J., Payne, D.N.
An L-band (1618nm) fibre-DFB laser pumped at 1534nm is demonstrated for the first time. It has a threshold of
L-band all-fibre DFB-lasers pumped at 980nm and 1534nm (2003)
Fu, L.B., Ibsen, M., Nilsson, J., Richardson, D.J., Payne, D.N.
The performance of an L-band fibre-DFB-laser is characterised when pumped at 1534nm and 980nm. >10mW of power is demonstrated at 1618nm under 980nm pumping. The thermally induced wavelength-shift is...
Wideband compression-tuned all-fibre DFB laser: analysis and characterisation (2003)
Fu, L.B., Ibsen, M., Mokhtar, M.R., Gunning, M., Richardson, D.J., Payne, D.N., ...
The optical output from an all-fibre DFB-laser compression tuned over most of the C-band is analysed and characterised. The single-polarisation and line-width performance of the device is maintained...
Keyed axis single-polarisation all-fibre DFB laser (2002)
Fu, L.B., Ibsen, M., Turner, P.W., Richardson, D.J., Payne, D.N.
A single-polarised D-shaped fibre DFB laser with keyed axis output is demonstrated. The laser shows an output power of 3.8 dBm and strong axis alignment when spliced to a polarisation maintaining...
Fu, L.B., Selvas, R., Ibsen, M., Sahu, J.K., Alam, U., Nilsson, J., ...
A 50GHz fibre-DFB laser transmitter source is demonstrated pumped by a CW fibre laser source at 977nm. Up to 9dBm of power is achieved per fibre DFB-laser with maintenance of all key operational...
Teh, P.C., Ibsen, M., Fu, L.B., Lee, J.H., Yusoff, Z., Richardson, D.J.
We demonstrate an all-fibre OCDMA system comprising 16 channels (4 OCDM x 4 WDM, 100 GHz grid) incorporating DFB fibre lasers as transmitters and 16-chip, 20 Gchip/s quaternary phase superstructured...
Single-polarization all-fibre DFB laser with keyed axis output (2002)
Fu, L.B., Ibsen, M., Turner, P.W., Richardson, D.J., Payne, D.N.
A single-polarized fiber DFB laser with keyed axis output is demonstrated from a D-shaped fiber configuration. The laser shows an output power of 3.8dBm and strong axis alignment when spliced to a...