A Tunable Microwave Photonic Filter With a Complex Coefficient Based on Polarization Modulation

Author

Zhang, Chenghui ; Yan, L.-S. ; Pan, W. ; Luo, B. ; Zou, X.-H. ; Jiang, H.-Y. ; Lu, Bao-Liang

Author_Institution

Center for Inf. Photonics & Commun., Southwest Jiaotong Univ., Chengdu, China

Volume

5

Issue

5

fYear

2013

fDate

Oct. 2013

Firstpage

5501606

Lastpage

5501606

Abstract

A tunable microwave photonic filter with a complex coefficient based on polarization modulation and a single laser source is proposed and demonstrated. Two out-of-phase microwave signals with orthogonal polarization states are generated using a polarization modulator and then combined into one special polarization state to introduce certain phase shifts after filtering out one sideband. The tunability of the filter with the complex coefficient is achieved by adjusting the phase shifts between two taps. In addition, the frequency response of the proposed filter from 10 to 11 GHz with FSR of 400 MHz is measured.

Keywords

frequency response; laser tuning; light polarisation; microwave filters; microwave photonics; optical filters; optical modulation; complex coefficient; frequency 10 GHz to 11 GHz; frequency response; orthogonal polarization states; out-of-phase microwave signals; phase shifts; polarization modulation; polarization modulator; single laser source; tunable microwave photonic filter; Band-pass filters; Microwave filters; Microwave photonics; Optical attenuators; Optical filters; Microwave photonic filter; complex coefficient; frequency response; polarization modulation;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2013.2274765

Filename

6570500