ENHANCEMENT IN ELECTROABSORPTION WAVE-GUIDE MODULATOR SLOPE EFFICIENCY AT HIGH OPTICAL POWER

Authors
WELSTAND RB PAPPERT SA NICHOLS DT LEMBO LJ LIU YZ YU PKL
Citation
Rb. Welstand et al., ENHANCEMENT IN ELECTROABSORPTION WAVE-GUIDE MODULATOR SLOPE EFFICIENCY AT HIGH OPTICAL POWER, IEEE photonics technology letters, 10(7), 1998, pp. 961-963
Citations number
7
Categorie Soggetti
Optics,"Physics, Applied
Journal title
IEEE photonics technology letters → ACNP
ISSN journal
10411135
Volume
10
Issue
7
Year of publication
1998
Pages
961 - 963
Database
ISI
SICI code
1041-1135(1998)10:7<961:EIEWMS>2.0.ZU;2-Q
Abstract
An increase in transfer curve slope efficiency for a Franz-Keldysh eff ect InGaAsP-InP electroabsorption waveguide modulator is observed as t he incident optical power is increased from 5.8 to 17 dBm. However, hi gh-frequency RF measurements agree with the gain predicted from the lo w-power transfer curve at all optical powers. We attribute the increas e in de slope efficiency to a temperature-induced bandgap shrinkage of the electroabsorption material.