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Postgraduate research project

Nonlinear applications of Si-rich SiN photonic waveguides

Funding
Competition funded
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Type of degree
Doctor of Philosophy
Entry requirements
2:1 honours degree
(View full entry requirements)
Faculty graduate school
Faculty of Engineering and Physical Sciences
Closing date

About the project

This project relates to the development and applications of novel nonlinear waveguides. This is an opportunity to carry out a PhD at the Communications Systems Lab of the Optoelectronics Research Centre (ORC). The group has been at the forefront of optical fibre communications since the very earliest days of the field providing several critical contributions.

The exciting prospect of compact highly nonlinear waveguides operating over broad wavelength ranges is likely to impact a multitude of application areas, spanning from communications to absorption spectroscopy, chemical and biological sensing and LIDAR applications. We have recently introduced silicon-rich silicon nitride as a promising nonlinear material and shown that it is a suitable candidate for applications involving the translation of optical signals across largely spaced wavelength bands.

You will explore applications of nonlinear silicon nitride waveguides through the design of application-specific devices. Applications of interest include phase-sensitive amplification, wavelength conversion, the nonlinear generation of broadband frequency combs and supercontinuum generation.

Wherever relevant, the applications will be tested using the ORC’s extensive telecommunications systems infrastructure, which include ultrafast optical and electronic diagnostic tools for advanced modulation formats, as well as immediate access to the UK’s National Dark Fibre Facility (the UK’s NDFF) for experimentation on optical transmission.

The project is underpinned by the EPSRC-funded project Silicon-rich silicon nitride Nonlinear Integrated Photonic ciRcuits & Systems (juNIPeRS).

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