Error-free external modulation of a single-frequency injection laser at 1.5 Gbit/s using a Ti:LiNbO3 waveguide switch

Author

Korotky, Steven K. ; Eisenstein, Gadi ; Kasper, B.L. ; Alferness, R.C. ; Veselka, J.J. ; Buhl, Lawrence L.

Author_Institution

AT&T Bell Laboratories, Holmdel, USA

Volume

20

Issue

21

fYear

1984

Firstpage

878

Lastpage

879

Abstract

We have used a packaged high-speed Ti:LiNbO3 directional coupler switch to externally modulate a CW-operated cleaved-coupled-cavity laser oscillating at 1.3 Â¿m wavelength. The performance of the modulator was evaluated by measuring bit error rates for the dominant mode of the laser using a monochromator as a selective bandpass filter. Error-free encoding was achieved for a non-return-to-zero rate of 1.5 Gbit/s. This result and observation of the optical spectrum demonstrate that the external modulation did not degrade the CW characteristics of the laser.

Keywords

directional couplers; optical modulation; optical waveguide components; semiconductor junction lasers; CW-operated cleaved-coupled-cavity laser; Ti:LiNbO3 waveguide switch; bit error rates; directional coupler switch; dominant mode; external modulation; monochromator; non-return-to-zero rate; selective bandpass filter; semiconductor junction lasers; single-frequency injection laser;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19840596

Filename

4249107