Investigation of InGaAsP Quantum-Well EAM Based Pump-Probe Configuration for Ultrafast Optical Signal Processing

Author

Wu, Bingbing ; Cheng, Yuanbing ; Fu, Songnian ; Wu, Jian ; Yao, Chen ; Wei, Shile ; Li, Lanlan ; Dai, Yitang ; Shum, Ping

Author_Institution

Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

47

Issue

8

fYear

2011

Firstpage

1113

Lastpage

1122

Abstract

A comprehensive theoretical model for analyzing both static and dynamic properties of arbitrary composition In₁_-_xGa_xAs_yP₁_-_y quantum-well (QW) electro-absorption modulator (EAM) is proposed. Optical absorption spectra of the QW-EAM considering both excitonic transitions and continuum conduction-band to valence-band transitions are included to evaluate the QW-EAM static performance. The dynamic absorption recovery of EAM is calculated as a function of electric field and pump power. Then, based on the theory of the carrier and absorption dynamics, a 40 Gb/s pump-probe configuration for optical signal processing using In_0.53Ga_0.47 As/InP QW-EAM as nonlinear element is thoroughly investigated. Influence of various parameters including pulse width, optical wavelength, optical power, and QW structure on the intensity and phase variation of the output probe signal through nonlinear interactions between pump and probe signals are investigated. The presented model and investigation are suitable for optimizing the device design and describing the properties of In₁_-_xGa_xAs_yP₁_-_y QW-EAM used in ultrafast optical signal processing applications.

Keywords

III-V semiconductors; conduction bands; electro-optical modulation; gallium arsenide; indium compounds; optical design techniques; optical information processing; optical pumping; optical saturable absorption; quantum well devices; semiconductor quantum wells; valence bands; visible spectra; In_0.53Ga_0.47As-InP; arbitrary composition; bit rate 40 Gbit/s; carrier dynamics; continuum conduction-band; dynamic absorption recovery; dynamic properties; excitonic transitions; nonlinear interactions; optical absorption spectra; optical power; optical wavelength; phase variation; pulse width; pump power; pump-probe configuration; quantum-well electroabsorption modulator; static properties; ultrafast optical signal processing; valence-band transitions; Absorption; Electric fields; Optical polarization; Optical pumping; Optical saturation; Probes; Absorption saturation; electro-absorption modulator; pump-probe configuration; signal processing;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2011.2159483

Filename

5892867