Linearization of quantum well electro-absorption modulator by quantum well intermixing technique for analog optical links

Author

Won Jun Choi ; Il Ki Han ; Yong Ju Park ; Eun Kyu Kim ; Jung Il Lee ; Woon Sik Kim ; Jong Chang Wi

Author_Institution

Photonics Res. Center, Korea Inst. of Sci. & Technol., Seoul, South Korea

fYear

2002

fDate

7-9 Jan. 2002

Firstpage

13

Lastpage

16

Abstract

A Quantum Well Intermixing (QWI) technique has been introduced to modify the transfer function of quantum well electroabsorption (EA) modulator for analog optical links. The linearization of transfer function of EA modulator has been achieved by introducing QW absorption regions differently intermixed each other along the waveguide. A 39.6 dB of IMD2 (2nd order intermodulation distortion) suppression and a 3.6 dB of SFDR (Spurious Free Dynamic Range) enhancement have been achieved.

Keywords

chemical interdiffusion; electro-optical modulation; electroabsorption; intermodulation distortion; linearisation techniques; optical communication equipment; optical waveguides; quantum well devices; transfer functions; EA modulator linearization; MQW electro-absorption modulator; QW absorption regions; SFDR enhancement; analog optical links; intermixed MQW structure; intermodulation distortion suppression; quantum well intermixing technique; quantum well modulator; second-order IMD; spurious free dynamic range enhancement; transfer function linearization; waveguide; Absorption; Dynamic range; Electrooptic modulators; Optical arrays; Optical fiber communication; Optical modulation; Optical waveguides; Phased arrays; Quantum well devices; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Photonics, 2001. MWP '01. 2001 International Topical Meeting on

Conference_Location

Long Beach, CA, USA

Print_ISBN

0-7803-7003-1

Type

conf

DOI

10.1109/MWP.2002.981784

Filename

981784