Millimeter-wave modulated optical signal generation with high spectral purity and wide-locking bandwidth using a fiber-integrated optical injection phase-lock loop

Author

Johansson, L.A. ; Seeds, A.J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK

Volume

12

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

690

Lastpage

692

Abstract

We report the first experimental demonstration of millimeter-wave modulated optical signal generation by an optical injection phase-lock loop. A 36-GHz signal was generated by combining optical sideband injection locking with optical phase-lock loop techniques for two fiber-coupled DFB lasers. Single sideband noise spectral density of -92 dBc/Hz at 10 kHz offset, and phase-error variance lower than 0.005 rad/sup 2/ in a 100 MHz bandwidth were measured. The locking bandwidth exceeded 30 GHz.

Keywords

distributed feedback lasers; microwave photonics; optical fibre communication; optical fibre couplers; optical modulation; optical phase locked loops; semiconductor lasers; 100 MHz; 30 GHz; 36 GHz; GHz signal generation; fiber-coupled DFB lasers; fiber-integrated optical injection phase-lock loop; high spectral purity; kHz offset; locking bandwidth; millimeter-wave modulated optical signal generation; optical injection phase-lock loop; optical phase-lock loop techniques; optical sideband injection lockin; phase-error variance; single sideband noise spectral density; wide-locking bandwidth; Bandwidth; Fiber lasers; Injection-locked oscillators; Laser noise; Millimeter wave technology; Optical modulation; Optical noise; Phase modulation; Phase noise; Signal generators;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.849086

Filename

849086