A Novel Optoelectronic Oscillator Based on Wavelength Multiplexing

Author

Shi Jia ; Jinlong Yu ; Ju Wang ; Wenrui Wang ; Qiong Wu ; Gangbin Huang ; Enze Yang

Author_Institution

Sch. of Electr. & Inf. Eng., Tianjin Univ., Tianjin, China

Volume

27

Issue

2

fYear

2015

fDate

Jan.15, 15 2015

Firstpage

213

Lastpage

216

Abstract

A novel dual-loop optoelectronic oscillator (OEO) with different wavelengths is demonstrated. The principle of OEO is analyzed theoretically. There is almost no beating noise due to the optical domain dual-loop with different wavelengths. In our experiment, a 20-GHz radio frequency (RF) with high quality is obtained. The phase noise of the microwave signal is measured to be -120.6 dBc/Hz at 10 kHz. The loop drift of the OEO is compensated by a fiber stretcher using phase-loop locked technology and the stability of the RF has been improved greatly. The frequency drift of the OEO system is <; ± 92.5 mHz within 3 h. A 70-dB side-mode suppression ratio is achieved. In addition, the measured linewidth is better than 2.9 mHz and the Q-factor is on the order of 10¹², which confirms the high spectral purity.

Keywords

Q-factor; microwave oscillators; microwave photonics; optical communication equipment; optical noise; phase noise; wavelength division multiplexing; OEO loop drift; OEO system frequency drift; Q-factor; RF stability; dual-loop optoelectronic oscillator; fiber stretcher; frequency 10 kHz; frequency 20 GHz; microwave signal; optical domain dual-loop; phase noise; phase-loop locked technology; side-mode suppression ratio; spectral purity; time 3 h; wavelength multiplexing; Bandwidth; Microwave oscillators; Microwave photonics; Optical noise; Optical polarization; Phase noise; Optoelectronic oscillator (OEO); frequency drift; linewidth; phase noise;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2365231

Filename

6937179