Optical PSK modulation using injection-locked DFB semiconductor lasers

Author

Hui, Rongqing

Author_Institution

Fondazione Ugo Bordoni, Rome, Italy

Volume

2

Issue

10

fYear

1990

Firstpage

743

Lastpage

746

Abstract

Injection-locked distributed feedback (DFB) semiconductor lasers, with strong single longitudinal mode selection provided by the distributed grating are found to be appropriate for optical phase shift keying (PSK) modulation. Both small-signal analysis and large-signal numerical simulations are performed on the optical PSK modulation properties. The main limitations are found to arise from the anomalous bandwidth reduction near the edge of the locking range and the time needed to damp the relaxation oscillation. By the tradeoff of the two effects, parameter optimization is obtained.<>

Keywords

distributed feedback lasers; optical communication equipment; optical modulation; phase shift keying; semiconductor junction lasers; DFB semiconductor lasers; PSK; anomalous bandwidth reduction; distributed grating; edge; injection locked distributed feedback semiconductor lasers; large-signal numerical simulations; locking range; optical phase shift keying modulation; parameter optimization; relaxation oscillation; single longitudinal mode selection; small-signal analysis; Distributed feedback devices; Gratings; Laser feedback; Laser modes; Optical feedback; Optical modulation; Performance analysis; Phase modulation; Phase shift keying; Semiconductor lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.60778

Filename

60778