Polarization independent δ-strained InGaAs/InGaAsP quantum well waveguide modulator

Author

Zhu, Y. ; Saini, S. ; Bartolo, R. ; Ren, T. ; Dagenais, M. ; Johnson, F. ; Shen, H. ; Pamulapati, J. ; Zhou, W.

Author_Institution

Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA

Volume

2

fYear

1999

fDate

1999

Firstpage

846

Abstract

Polarization independent modulators are important devices for optical communication systems operating at 1.55 μm. However, conventional unstrained QW modulators, based on the quantum confined Stark effect (QCSE), typically exhibit a strong polarization dependence in transmission due to a strong polarization dependence of the absorption near the band edge. We have demonstrated a δ-strained InGaAs/InGaAsP MQW polarization independent waveguide modulator. It exhibits excellent polarization insensitivity, high extinction ratio, high speed response and low driving voltage. It shows that the δ-strained MQW modulator is a promising device for telecommunication applications

Keywords

III-V semiconductors; electro-optical modulation; gallium arsenide; gallium compounds; indium compounds; molecular beam epitaxial growth; optical communication equipment; optical fabrication; optical waveguide components; quantum confined Stark effect; quantum well devices; ridge waveguides; semiconductor heterojunctions; semiconductor quantum wells; δ-strained InGaAs/InGaAsP MQW polarization independent waveguide modulator; δ-strained MQW modulator; 1.55 mum; InGaAs-InGaAsP; InGaAs/InGaAsP; absorption; band edge; conventional unstrained QW modulators; extinction ratio; high speed response; low driving voltage; optical communication systems; polarization dependence; polarization independent δ-strained modulators; polarization independent modulators; polarization insensitivity; quantum confined Stark effect; quantum well waveguide modulator; telecommunication applications; transmission; Absorption; Delta modulation; Extinction ratio; Indium gallium arsenide; Optical fiber communication; Optical polarization; Optical waveguides; Potential well; Quantum well devices; Stark effect;

fLanguage

English

Publisher

ieee

Conference_Titel

LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting

Conference_Location

San Francisco, CA

ISSN

1092-8081

Print_ISBN

0-7803-5634-9

Type

conf

DOI

10.1109/LEOS.1999.811999

Filename

811999