PROJECT DETAILS
| Name: |
|
Air-silica microstructure fibres: methods of fabrication and characterisation |
| From: |
|
2002-01-01 |
|
| To: |
|
2004-12-31 |
The project is aimed at the development of methodological approaches for
fabrication and for characterisation of air-silica microstructure fibres
(MSFs). The fabrication of the MSFs will employ and further develop the
original method for the preparation of multichannel capillary
restrictors and will be based on drawing an arranged stack of silica
capillaries and a central silica rod. This process will be investigated
both experimentally and theoretically with the aim of developing a
technological model for the fabrication of MSFs with the controlled core
and hole dimensions, hole pitch and air filling fraction. This
technological model will be used for the fabrication of the fibres with
the silica cores and the flattened dispersion in a range of 1400-1700 nm
and with the attenuation below 0.2 dB/m at 1300 nm. The model will be
further extended to MSFs doped in the core with ytterbium and erbium
ions. Samples of the drawn fibres will be characterised by measuring
their attenuation, cut-off wavelength and mode field diameter.
Experimental methods for the determination of the group velocity
dispersion and non-linear coefficient will be developed in the project.
The effect of the air-silica cladding on the fluorescence at the
erbium-doped fibres and their lasing characteristics around 1550 nm will
be investigated under the excitation of the fibre at 1060 nm.
Theoretical models for the evaluation of waveguide and dispersion
properties of the prepared fibres based on a full-vector technique will
be developed.
