Design of a Compact Two-Mode Multi/Demultiplexer Consisting of Multimode Interference Waveguides and a Wavelength-Insensitive Phase Shifter for Mode-Division Multiplexing Transmission

Author

Uematsu, Takui ; Ishizaka, Yuhei ; Kawaguchi, Yuki ; Saitoh, Kunimasa ; Koshiba, Masanori

Author_Institution

Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan

Volume

30

Issue

15

fYear

2012

Firstpage

2421

Lastpage

2426

Abstract

A compact two-mode (de)multiplexer (TM-MUX) based on Si nanowire for mode-division multiplexing is designed. The TM-MUX is composed of two multimode interference (MMI) waveguides and a butterfly-shape tapered phase shifter between two MMI waveguides. Numerical simulations show that the designed device is compact compared with conventional-mode (de)multiplexer and operates as a TM-MUX in the whole C-band. In addition, we show that the designed TM-MUX has relatively good fabrication tolerance.

Keywords

demultiplexing equipment; elemental semiconductors; light interference; multiplexing equipment; nanophotonics; nanowires; numerical analysis; optical communication equipment; optical design techniques; optical fabrication; optical phase shifters; optical waveguides; silicon; C-band; MMI waveguides; Si; Si nanowire; TM-MUX; butterfly-shape tapered phase shifter; compact two-mode demultiplexer; compact two-mode multiplexer; fabrication tolerance; mode-division multiplexing transmission; multimode interference waveguides; numerical simulations; wavelength-insensitive phase shifter; Couplers; Optical fiber amplifiers; Optical fiber couplers; Optical fiber devices; Optical fiber networks; Optical fiber polarization; Finite-element method; mode-division multiplexing (MDM); multimode interference (MMI); phase shifter (PS); silicon nanowire;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2012.2199961

Filename

6202311