Reconfigurable and Tunable Flat-Top Microwave Photonic Filters Utilizing Optical Frequency Combs

Author

Song, Minhyup ; Long, Christopher M. ; Wu, Rui ; Seo, DongSun ; Leaird, Daniel E. ; Weiner, Andrew M.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

23

Issue

21

fYear

2011

Firstpage

1618

Lastpage

1620

Abstract

We demonstrate reconfigurable and tunable flat-top microwave photonic filters based on an optical comb source and a dispersive medium. Complex taps allowing flexible and tunable filter characteristics are implemented by programming the amplitude and phase of individual comb lines using an optical line-by-line pulse shaper. First, we implement a flat top filter by applying positive and negative weights across the comb lines, then tune the filter center frequency by adding a phase ramp onto the tap weights.

Keywords

high-speed optical techniques; microwave filters; microwave photonics; optical dispersion; optical filters; optical pulse shaping; comb lines; dispersive medium; microwave photonic filters; optical comb source; optical frequency combs; optical line-by-line pulse shaper; phase ramp; reconfigurable filters; tunable flat-top filters; Filtering theory; Microwave filters; Microwave photonics; Optical fiber filters; Optical pulse shaping; Flat-top filters; microwave photonic filters; optical pulse shaping; reconfigurable filters;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2165209

Filename

5986688