Dr Jayanta Sahu

Silica Fibre Fabrication Group

Fabrication of silica based optical fibre has been the core of the ORC’s fibre research since the formation of the ORC. Silica optical fibre and devices made from these types of fibre form the majority of the components used in the optical telecommunications industry as well as many other uses in high power lasers, sensing, light transmission etc. At the ORC we have access to a multi-million pound cleanroom equipped with several systems for fabrication and research on most aspects of silica fibres. The work of the fibre fabrication group is interdisciplinary. Candidates to work in this group require a background in any one of materials science, physics, engineering and chemistry.

Development of bismuth doped fibres for ultra-broadband light sources

This project will involve work on many aspects of optical fibre, targeted at the fibre laser and telecommunication markets. Specifically, the project will investigate a novel bismuth doped silica fibre for broadband fibre sources in the 1100 - 1500 nm wavelength range. This spectral range is attractive for applications such as high power visible light generation through frequency doubling, optical amplifiers/lasers in the low-dispersion 2nd telecommunication window. In the course of this work the student will become expert in many areas including, optical fibre fabrication, the science of silicate glasses, and fibre lasers and amplifiers.

Innovative fibre fabrication technique for next generation high-power fibre laser applications.

Currently there is a substantial interest in ultra high power fibre lasers. These lasers find applications in many areas including materials processing, medicine and defence. Fibre lasers are particularly attractive for these applications since they are compact, robust and deliver a high quality beam. The objective of this project is to develop a novel gas phase deposition technique to allow rapid fabrication of large-core (much larger than current industry standard MCVD–solution doping technique) and high rare-earth (RE) concentrations doped silica fibre preforms with complex index profile structure, and thus aiming to improve the high-power fibre lasers and amplifiers performances significantly.

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