Cleaved fiber-to-nano waveguide mode converter for silicon photonics devices

Author

Qing Fang ; Jun Feng Song ; Tsung-Yang Liow ; Lianxi Jia ; Xianshu Luo ; Ming Bin Yu ; Guo Qiang Lo

Author_Institution

Inst. of Microelectron., A*STAR (Agency of Sci. & Technol. Res.), Singapore, Singapore

fYear

2012

fDate

13-16 Dec. 2012

Firstpage

1

Lastpage

3

Abstract

In this paper, a high efficient fiber-to-waveguide mode converter is demonstrated on the SOI platform, which is composed of a suspended tapered SiO₂ waveguide and overlapped Si nano-tapers. The overlapped Si nano-tapers are located in the center of suspended tapered SiO₂ waveguide. With a refractive index (<;1.4) matching liquid, the coupling losses between the cleaved optical fiber and this converter are 1.5 dB/facet and 2.1 dB/facet for TE and TM modes, respectively. The 1 dB bandwidths for both TE and TM modes are more than 100 nm. The alignment tolerances for both TE and TM modes are ± 2.5 μm and 2.0 μm for 1 dB excess loss in horizontal direction and vertical direction, respectively.

Keywords

elemental semiconductors; nanophotonics; optical fibre losses; refractive index; silicon; silicon compounds; silicon-on-insulator; SOl platform; Si-SiO₂; TE mode; TM mode; cleaved fiber-to-nanowaveguide mode converter; coupling losses; matching liquid; overlapped silicon nanotapers; refractive index; silicon photonics devices; suspended-tapered silica waveguide; Couplings; Integrated optics; Optical coupling; Optical losses; Optical refraction; Optical waveguides; Photonics; Alignment tolerance; Bandwidth; Coupling loss; Fiber-to-Waveguide Converter; SOI platform;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2012

Conference_Location

Singapore

Print_ISBN

978-1-4673-2513-4

Type

conf

DOI

10.1109/PGC.2012.6457944

Filename

6457944