Compact double-layer waveguide grating triplexer based on silicon-on-insulator

Author

Junbo Yang ; Zhenrong Zhang ; Shenli Chang ; Honghui Jia ; Xueao Zhang

Author_Institution

Tech-Phys. Res. Centre, Nat. Univ. of Defense Technol., Changsha, China

Volume

7

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

384

Lastpage

387

Abstract

A double-layer grating design particularly suitable for triplexers is presented. It consists of two silicon-on-insulator planar waveguide gratings, where the upper grating is used to couple and split 1310 and 1490 nm signal, and transmits along the opposite direction. The coupling efficiency is about 88 and 84 . The crosstalk can reach up to 21 and 11 dB. However, the 1550 nm signal light almost passes through the upper layer and then is coupled by the lower grating. The coupling efficiency is about 79 . The design is validated by simulation, which shows excellent performance in terms of wavelength bandwidth, crosstalk, coupling efficiency as well as incident angle and so on.

Keywords

diffraction gratings; multiplexing equipment; optical communication equipment; optical crosstalk; optical design techniques; optical planar waveguides; silicon-on-insulator; Si; compact double-layer waveguide grating triplexer; coupling efficiency; crosstalk; double-layer grating design; incident angle; signal coupling; signal spliting; silicon-on-insulator planar waveguide gratings; wavelength 1310 nm; wavelength 1490 nm; wavelength 1550 nm; wavelength bandwidth;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2012.0104

Filename

6194432