University of Oxford

Post-Doc, Engineering Science

St. Edmund Hall, University of Oxford

Thesis Title: Holographic Selective Mode Excitation in Multimode Fibre

Advisors: Dr. Dominic O' Brien
Dr. Frank Payne

About

A majority of local area network (LAN) building backbone links are 62.5/125μm graded-index multimode fibre, mostly less than 300m long. With growing demands for high bandwidth, typical multimode fibre (MMF) using conventional transmission methods will soon no longer be able to support future multi-gigabit rate demands. Although alternatives to MMF such as single mode fibre exist, the high price for replacing current infrastructure has fuelled research on possible techniques to support the future demands over existing MMF backbones. 

Holographic selective mode excitation by means of a spatial light modulator (SLM) is a new technique for minimizing modal dispersion in MMF and increasing the channel bandwidth. The work on holographic selective mode excitation includes comparison of power coupling efficiency for various selective mode excitation launches into a MMF, experimental work on holographic selective mode excitation using a programmable SLM, modal decomposition of the output field from the holographic selective excitation experiment and bandwidth estimation of the holographic selective mode excitation channel.

Contact Information

Email:

Homepage: http://dept106.eng.ox.ac.uk/wb/pages/people/graduate-students/angela-amphawan.php

Address: St. Edmund Hall,
Queens Lane,
Oxford,
OX1 4AR,
United Kingdom.