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Polarisation dynamics of vector soliton molecules in mode locked fibre laser.

Tsatourian V, Sergeyev SV, Mou C, Rozhin A, Mikhailov V, Rabin B, Westbrook PS, Turitsyn SK - Sci Rep (2013)

Bottom Line: Two fundamental laser physics phenomena--dissipative soliton and polarisation of light are recently merged to the concept of vector dissipative soliton (VDS), viz. train of short pulses with specific state of polarisation (SOP) and shape defined by an interplay between anisotropy, gain/loss, dispersion, and nonlinearity.Emergence of VDSs is both of the fundamental scientific interest and is also a promising technique for control of dynamic SOPs important for numerous applications from nano-optics to high capacity fibre optic communications.Using specially designed and developed fast polarimeter, we present here the first experimental results on SOP evolution of vector soliton molecules with periodic polarisation switching between two and three SOPs and superposition of polarisation switching with SOP precessing.

View Article: PubMed Central - PubMed

Affiliation: 1] Aston Institute of Photonic Technologies, School of Engineering & Applied Science Aston University, Birmingham, B4 7ET, UK [2] National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK [3] School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.

ABSTRACT
Two fundamental laser physics phenomena--dissipative soliton and polarisation of light are recently merged to the concept of vector dissipative soliton (VDS), viz. train of short pulses with specific state of polarisation (SOP) and shape defined by an interplay between anisotropy, gain/loss, dispersion, and nonlinearity. Emergence of VDSs is both of the fundamental scientific interest and is also a promising technique for control of dynamic SOPs important for numerous applications from nano-optics to high capacity fibre optic communications. Using specially designed and developed fast polarimeter, we present here the first experimental results on SOP evolution of vector soliton molecules with periodic polarisation switching between two and three SOPs and superposition of polarisation switching with SOP precessing. The underlying physics presents an interplay between linear and circular birefringence of a laser cavity along with light induced anisotropy caused by polarisation hole burning.

No MeSH data available.


Related in: MedlinePlus

(a) Schematic diagram of the IPLM polarimeter. (b) Principle of operation of the device.
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f8: (a) Schematic diagram of the IPLM polarimeter. (b) Principle of operation of the device.

Mentions: The schematic diagram of IPLM polarimeter and its principle of operation are shown in Fig. 8 (a) and (b) respectively. Four fibre Bragg gratings are written in the core of OFS TruePhase polarisation maintaining (HiBi) fibre. The gratings have a 45° blaze angle with respect to the fibre axis. The longitudinal period of the grating along the fibre is roughly 1.07 μm so that core light at 1.55 μm is phase matched to orthogonally scattered light. The 45° blaze angle ensures a highly directional orthogonal scattering with the maximum strength. The orthogonal scattering geometry also provides the polarisation sensitivity. As the induced dipoles are aligned orthogonally to the scattering direction, the strength of the light polarized parallel to the plane of scatter is minimal. Since the interaction length between the intra-core light and the orthogonally propagating light is on the order of the core diameter, the scattering is insensitive to wavelength over tens of nanometers. Hence, these gratings act as broadband, highly polarisation sensitive optical taps with the intensity of the scattered light proportional to a projection of the signal polarisation onto the polarisation state defined by the grating.


Polarisation dynamics of vector soliton molecules in mode locked fibre laser.

Tsatourian V, Sergeyev SV, Mou C, Rozhin A, Mikhailov V, Rabin B, Westbrook PS, Turitsyn SK - Sci Rep (2013)

(a) Schematic diagram of the IPLM polarimeter. (b) Principle of operation of the device.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3818655&req=5

f8: (a) Schematic diagram of the IPLM polarimeter. (b) Principle of operation of the device.
Mentions: The schematic diagram of IPLM polarimeter and its principle of operation are shown in Fig. 8 (a) and (b) respectively. Four fibre Bragg gratings are written in the core of OFS TruePhase polarisation maintaining (HiBi) fibre. The gratings have a 45° blaze angle with respect to the fibre axis. The longitudinal period of the grating along the fibre is roughly 1.07 μm so that core light at 1.55 μm is phase matched to orthogonally scattered light. The 45° blaze angle ensures a highly directional orthogonal scattering with the maximum strength. The orthogonal scattering geometry also provides the polarisation sensitivity. As the induced dipoles are aligned orthogonally to the scattering direction, the strength of the light polarized parallel to the plane of scatter is minimal. Since the interaction length between the intra-core light and the orthogonally propagating light is on the order of the core diameter, the scattering is insensitive to wavelength over tens of nanometers. Hence, these gratings act as broadband, highly polarisation sensitive optical taps with the intensity of the scattered light proportional to a projection of the signal polarisation onto the polarisation state defined by the grating.

Bottom Line: Two fundamental laser physics phenomena--dissipative soliton and polarisation of light are recently merged to the concept of vector dissipative soliton (VDS), viz. train of short pulses with specific state of polarisation (SOP) and shape defined by an interplay between anisotropy, gain/loss, dispersion, and nonlinearity.Emergence of VDSs is both of the fundamental scientific interest and is also a promising technique for control of dynamic SOPs important for numerous applications from nano-optics to high capacity fibre optic communications.Using specially designed and developed fast polarimeter, we present here the first experimental results on SOP evolution of vector soliton molecules with periodic polarisation switching between two and three SOPs and superposition of polarisation switching with SOP precessing.

View Article: PubMed Central - PubMed

Affiliation: 1] Aston Institute of Photonic Technologies, School of Engineering & Applied Science Aston University, Birmingham, B4 7ET, UK [2] National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK [3] School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.

ABSTRACT
Two fundamental laser physics phenomena--dissipative soliton and polarisation of light are recently merged to the concept of vector dissipative soliton (VDS), viz. train of short pulses with specific state of polarisation (SOP) and shape defined by an interplay between anisotropy, gain/loss, dispersion, and nonlinearity. Emergence of VDSs is both of the fundamental scientific interest and is also a promising technique for control of dynamic SOPs important for numerous applications from nano-optics to high capacity fibre optic communications. Using specially designed and developed fast polarimeter, we present here the first experimental results on SOP evolution of vector soliton molecules with periodic polarisation switching between two and three SOPs and superposition of polarisation switching with SOP precessing. The underlying physics presents an interplay between linear and circular birefringence of a laser cavity along with light induced anisotropy caused by polarisation hole burning.

No MeSH data available.


Related in: MedlinePlus