Title

High, Resolution Tunable Microwave Filter Using Hybrid Analog-Digital Controls via an Acoustooptic Tunable Filter and Digital Micromirror Device

Authors

Authors

N. A. Riza;F. N. Ghauri

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Lightwave Technol.

Keywords

Microwave filters; radar; signal procesor; RADIOFREQUENCY TRANSVERSAL FILTER; GRATINGS; SIGNALS; Engineering, Electrical & Electronic; Optics; Telecommunications

Abstract

A programmable broadband Radio Frequency (RF) filter is designed using a Digital Micromirror Device (DMD), an Acoustooptic Tunable Filter (AOTF), and a Chirped Fiber Bragg grating (CFBG). This hybrid analog-digital optical design enables implementation of RF filters with higher number of taps in comparison with an AOTF-only RF filter design and improved RF tunability in comparison with a DMD-only design. A 3-tap RF filter is theoretically analyzed and experimentally demonstrated using a combination of analog and digital optical tap selection. Filter nulls recorded at 6.90, 6.945, and 6.99 GHz show the tunability improvement with the hybrid design. Implementation of higher tap count filters can lead to similar improvements in filter tunability and pass-band and stop-band characteristics.

Journal Title

Journal of Lightwave Technology

Volume

26

Issue/Number

17-20

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

3056

Last Page

3061

WOS Identifier

WOS:000262657200008

ISSN

0733-8724

Share

COinS