A Novel Broadband Photonic RF Phase Shifter

Author

Adams, Donald B. ; Madsen, Christi K.

Author_Institution

Texas A&M Univ., College Station, TX

Volume

26

Issue

15

fYear

2008

Firstpage

2712

Lastpage

2717

Abstract

A novel broadband photonic RF phase shifter is proposed that employs single-sideband modulation of the broadband RF signal onto an optical carrier. The phase of the carrier is shifted relative to the modulated signal using an optical allpass filter. Ring-resonator-based optical allpass filters are tuned across the carrier frequency to yield an RF phase shift of over 360 degrees. Results from a proof-of-concept experimental demonstration are presented for modulation frequencies in the range of 2-4 GHz.

Keywords

microwave phase shifters; microwave photonics; optical filters; optical modulation; optical phase shifters; optical resonators; broadband RF signal; broadband photonic RF phase shifter; carrier frequency; modulation frequencies; optical allpass filter; optical carrier; ring-resonator-based optical allpass filters; single-sideband modulation; Delay; Optical attenuators; Optical filters; Optical modulation; Optical ring resonators; Optical signal processing; Phase modulation; Phase shifters; Radio frequency; Tunable circuits and devices; Optical fibers; optical signal processing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2008.927781

Filename

4652261