The spherical fourier cell and application for true-time delay

Title:	The spherical fourier cell and application for true-time delay
Author:	Rabb, David J
Description:	In this dissertation a new optical system is introduced, called a Spherical Fourier Cell. The Spherical Fourier Cell was originally developed in an effort to further compact an optical true-time delay system. The Fourier Cell could be used for a number of optical signal processing applications, but here the focus is on its application for true-time delay. The optical configuration for the system is given and properties explained, including delay optics. A bulk optic design is given with modeling results for a system with 900 input beams, providing 64 delays from 0 to 19.7 ns, in a volume of 54 cubic inches. A simplified version of the bulk optic system implementing two of six possible delay paths is designed for a bench top system demonstration. Measurements of delays, loss and crosstalk are given. In an effort to make fabrication of a full design more feasible, a micro-fabricated approach is introduced. This reduces the number of components from ~400 to three wafers with surfaces etched on them. The system provides 576 elements 64 delays from 0 to 9.85 ns, in a volume of 15 cubic inches. Variations of the design are given with modeling results, as well as preliminary system tolerances.
Permanent Link:	http://rave.ohiolink.edu/etdc/view?acc_num=osu1197045216 http://hdl.handle.net/2374.OX/4822
Date:	2008

Files in this item

Files	Size	Format	View
There are no files associated with this item.