High-speed intensity modulation of 1.5 μm DBR lasers with wavelength tuning

Author

Kano, Fumiyoshi ; Fukuda, Mitsuo ; Sato, Kenji ; Oe, Kunishige

Author_Institution

NTT Opto-Electron. Lab., Kanagawa, Japan

Volume

26

Issue

8

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

1340

Lastpage

1346

Abstract

Intensity modulation characteristics of a 1.5-μm butt-jointed DBR (distributed-Bragg-reflector) laser with wavelength tuning were studied. A 3-dB modulation bandwidth of 9 GHz and a high relaxation oscillation frequency of more than 10 GHz were obtained for the DBR laser. These characteristics were not affected by changing the lasing wavelength. The chirping width of the DBR laser is lower than that of the distributed feedback (DFB) laser. A clear eye opening and low chirping characteristics were obtained under 5-Gb/s nonreturn to zero (NRZ) pseudorandom modulation with a sufficient extinction ratio

Keywords

distributed Bragg reflector lasers; laser transitions; laser tuning; optical modulation; semiconductor junction lasers; 1.5 micron; 9 GHz; DBR lasers; NRZ pseudorandom modulation; butt jointed laser; chirping width; clear eye opening; distributed-Bragg-reflector; extinction ratio; high relaxation oscillation frequency; high speed intensity modulation; low chirping characteristics; modulation bandwidth; nonreturn to zero; semiconductor laser; wavelength tuning; Bandwidth; Chirp modulation; Distributed Bragg reflectors; Distributed feedback devices; Extinction ratio; Frequency; Intensity modulation; Laser feedback; Laser tuning; Optical signal processing;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.59680

Filename

59680