Compact integrated star coupler on silicon-on-insulator

Author

Cao, G.B. ; Dai, L.J. ; Wang, Y.J. ; Jiang, J. ; Yang, Hongming ; Zhang, F.

Author_Institution

Shanghai Inst. of Microsyst. & Inf. Technol., Chinese Acad. of Sci., Shanghai, China

Volume

17

Issue

12

fYear

2005

Firstpage

2616

Lastpage

2618

Abstract

Asymmetrical rib waveguide bends on silicon-on-insulator were applied to the design of a compact integrated 39 × 39 star coupler. With bend radius of 500 μm, the effective chip size of the coupler is nearly 1 cm². The average excess loss as low as 1.3 dB was achieved at wavelength 1.55 μm. This bend configuration is not single-mode, but by appropriate design, the fundamental mode propagation can be achieved. It can be used in arrayed waveguide grating devices based on SOI.

Keywords

integrated optics; optical couplers; optical design techniques; optical losses; optical waveguides; rib waveguides; silicon-on-insulator; 1.55 mum; 500 mum; Si; arrayed waveguide grating devices; asymmetrical rib waveguide bends; compact star coupler; coupler loss; fundamental mode propagation; integrated star coupler; silicon-on-insulator; star coupler design; Arrayed waveguide gratings; Etching; Optical coupling; Optical devices; Optical losses; Optical waveguides; Propagation losses; Silicon on insulator technology; Slabs; Wire; Finite element method; integrated optics; rib waveguide; silicon-on-insulator (SOI); star coupler;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.859408

Filename

1542167