High Efficiency Broadband Polarization Converter Based on Tapered Slot Waveguide

Author

Yonghao Fei ; Libin Zhang ; Tongtong Cao ; Yanmei Cao ; Shaowu Chen

Author_Institution

State Key Lab. on Optoelectron., Inst. of Semicond., Beijing, China

Volume

25

Issue

9

fYear

2013

fDate

1-May-13

Firstpage

879

Lastpage

881

Abstract

A novel high efficiency broadband polarization converter based on an adiabatic tapered vertical slot waveguide is proposed and analyzed. Unlike previously reported tapered polarization converters, this device converts the first-order TM/TE mode into the first-order TE/TM mode. The structure utilizes a vertical slot waveguide, which only needs a one-mask etching process. The bandwidth is ultrawide, ~100 nm (1500-1600 nm) with a conversion efficiency of > 98%. The total length of the polarization converter is 116 μm, and its minimum fabrication tolerance is acceptable for modern nanofabrication technology.

Keywords

etching; nanofabrication; nanophotonics; optical fabrication; optical waveguides; adiabatic tapered vertical slot waveguide; high efficiency broadband polarization converter; nanofabrication technology; one-mask etching process; tapered slot waveguide; transverse electric mode; transverse magnetic mode; wavelength 1500 nm to 1600 nm; Optical interconnects; photonic integrated circuits; polarization converter; slot waveguide;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2254706

Filename

6488726