Title :
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
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2199961
