Found this Dissertation:
Suhrawardi, Abhinavagupta and the metaphysics of light – Kirk Templeton
at
http://pqdtopen.proquest.com/pqdtopen/doc/1492548402.html?FMT=ABS
Makes very interesting reading and is a Comparitive Study of the Metaphysics of Light which has been independently treated in the Suharwardi School in Persia , Plotinus in Greece and our very beloved Abhinavagupta.
Other Open Acess Dissertations can be had free of Cost from the Web Site:
eGangotri Digital Preservation Trust 