CONTROL OF A VANDERLUGT CORRELATOR USING A SINGLE 8-BIT FRAME GRABBER

Authors
LABASTIDA I CARNICER A MARTINBADOSA E VALLMITJANA S JUVELLS I
Citation
I. Labastida et al., CONTROL OF A VANDERLUGT CORRELATOR USING A SINGLE 8-BIT FRAME GRABBER, Optics communications, 153(4-6), 1998, pp. 331-338
Citations number
26
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
153
Issue
4-6
Year of publication
1998
Pages
331 - 338
Database
ISI
SICI code
0030-4018(1998)153:4-6<331:COAVCU>2.0.ZU;2-O
Abstract
We analyze in depth several engineering problems regarding the constru ction of a VanderLugt correlator. Two liquid crystal devices are used in the input and Fourier planes, and the large distances involved are reduced with the help of telephoto systems. An original method to cont rol both modulators with a single 8-bit frame grabber and a single vid eoprojector electronics is presented. Problems related to pixel-by-pix el addressing and the phase modulation in the panels are also discusse d. All the solutions proposed in this paper have been implemented and experimental correlation results using the setup have been obtained. ( C) 1998 Elsevier Science B.V. All rights reserved.