Ultrashort two-section fused vertical coupler switches with high extinction ratios

Author

Cho, Sung-Chan ; Min, Byung ; Boo-Gyoum Kim ; Shakouri, Ali

Author_Institution

Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea

Volume

2

fYear

2000

fDate

2000

Firstpage

647

Abstract

We show that both cross and bar states with high extinction ratio larger than 30 dB can be achieved in ultrashort (<100 μm) fused vertical directional coupler switches with two sections by modifying the refractive indices of cores and inner cladding layers by an amount less than 1%. Transfer matrix method and the improved coupled mode theory are used to analyze these structures and the results are compared with those of 2D finite difference beam propagation method. Also, design guidelines to achieve high extinction ratios with large tolerances are presented

Keywords

coupled mode analysis; finite difference methods; optical directional couplers; packet switching; photonic switching systems; refractive index; transfer function matrices; 2D finite difference beam propagation method; bar states; cross states; design guidelines; fused vertical coupler switches; high extinction ratios; large tolerances; optical packet switching; refractive index modification; transfer matrix method; ultrashort two-section switches; Extinction coefficients; Extinction ratio; Optical coupling; Optical losses; Optical packet switching; Optical waveguides; Packet switching; Refractive index; Switches; Tires;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE

Conference_Location

Rio Grande

ISSN

1092-8081

Print_ISBN

0-7803-5947-X

Type

conf

DOI

10.1109/LEOS.2000.894008

Filename

894008