Optical modulator based on a Si0.75Ge0.25/Si/Si0.5Ge0.5 asymmetric superlattice structure

被引：0

作者：

Tu, X. ^{[1
]}

Zuo, Y. ^{[1
]}

Chen, S. ^{[1
]}

Zhao, L. ^{[1
]}

Yu, J. ^{[1
]}

Wang, Q. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China

来源：

LASER PHYSICS | 2008年 / 18卷 / 04期

关键词：

Fabry-Perot interferometers - Optical waveguides - Plasmas - Superlattices;

D O I：

10.1134/s11490-008-4014-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical modulator is designed and fabricated based on a Si0.75Ge0.25/Si/Si0.5Ge0.5 asymmetrical superlattice structure. The device comprises a p-i-n diode made on the asymmetrical superlattice integrated with a 920-mu m-long Fabry-Perot (F-P) cavity. Parameters of the rib waveguide are designed to satisfy only the fundamental-TE mode transmission. Here, 65 and 40-pm red shifts of the peak resonant were measured under the applied bias of 2.5 and -32.0 V, respectively. The analysis shows that, besides the thermal-optical and plasma dispersion effects, the Pockels effect also contributes to such a peak shift. The corresponding calculated effective Pockels coefficient is about 0.158 pm/V.

引用

页码：438 / 441

页数：4

共 8 条

[1] A novel optical phase modulator design suitable for phased arrays [J].

Jackson, SM ;

Hewitt, PD ;

Reed, GT ;

Tang, CK ;

Evans, AGR ;

Clark, J ;

Aveyard, C ;

Namavar, F .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1998, 16 (11) :2016-2019

[2] Strong quantum-confined Stark effect in germanium quantum-well structures on silicon [J].

Kuo, YH ;

Lee, YK ;

Ge, YS ;

Ren, S ;

Roth, JE ;

Kamins, TI ;

Miller, DAB ;

Harris, JS .

NATURE, 2005, 437 (7063) :1334-1336

[3]

RONG Y, 2001, PHYS CONDENS MATTER, V13, pL557

[4] ELECTROOPTICAL EFFECTS IN SILICON [J].

SOREF, RA ;

BENNETT, BR .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1987, 23 (01) :123-129

[5] Electro-optic coefficients of Si0.75Ge0.25/Si/Si0.5Ge0.5 asymmetric superlattice measured by polarization-maintaining fiber-optic Mach-Zehnder interferometer [J].

Zhao, L. ;

Tu, X. G. ;

Zuo, Y. H. ;

Chen, S. W. ;

Wang, Q. M. .

APPLIED PHYSICS LETTERS, 2006, 89 (14)

[6] Study on in-plane optical anisotropy of Si0.75Ge0.25/Si/Si0.5Ge0.5 asymmetric superlattice by reflectance difference spectroscopy - art. no. 071908 [J].

Zhao, L ;

Zuo, YH ;

Shi, WH ;

Wang, QM ;

Chen, YH ;

Wang, HN .

APPLIED PHYSICS LETTERS, 2006, 88 (07)

[7]

ATLAS SILVACO SOFTWA

[8]

PHOTON DESIGN SOFTWA

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