Photonic Generation of Microwave Pulse Using a Phase-Modulator-Based Sagnac Interferometer and Wavelength-to-Time Mapping

Author

Wei Li ; Wei Yu Wang ; Wen Ting Wang ; Jian Guo Liu ; Ning Hua Zhu

Author_Institution

State Key Lab. on Integrated Optoelectron., Inst. of Semicond., Beijing, China

Volume

6

Issue

6

fYear

2014

fDate

Dec. 2014

Firstpage

1

Lastpage

8

Abstract

We report a new photonic microwave pulse generator using a phase-modulator-based Sagnac interferometer (PM-SI) and wavelength-to-time mapping in a dispersive element. The key significance of the proposed scheme is that the phase of the generated microwave pulse can be continuously tuned by adjusting the bias voltage applied to the PM. Thanks to the wide bandwidth of the PM, high-speed phase modulation of the microwave pulse can be realized. Moreover, the PM-SI is polarization independent, which means that the PM-SI is insensitive to the state of polarization of the input optical signal, ensuring a stable operation of the system. The proposed scheme is theoretically analyzed and experimentally verified.

Keywords

Sagnac interferometers; microwave photonics; optical modulation; optical pulse generation; phase modulation; dispersive element; high-speed phase modulation; phase tuning; phase-modulator-based Sagnac interferometer; photonic generation; photonic microwave pulse generator; polarization independent PM-SI; wavelength-to-time mapping; Microwave communication; Microwave filters; Microwave measurement; Microwave photonics; Optical pulses; Sagnac interferometers; Microwave photonics; Sagnac interferometer; microwave pulses; wavelength-to-time mapping;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2374595

Filename

6967770