Title :
High Efficiency Broadband Polarization Converter Based on Tapered Slot Waveguide
Author :
Yonghao Fei ; Libin Zhang ; Tongtong Cao ; Yanmei Cao ; Shaowu Chen
Author_Institution :
State Key Lab. on Optoelectron., Inst. of Semicond., Beijing, China
Abstract :
A novel high efficiency broadband polarization converter based on an adiabatic tapered vertical slot waveguide is proposed and analyzed. Unlike previously reported tapered polarization converters, this device converts the first-order TM/TE mode into the first-order TE/TM mode. The structure utilizes a vertical slot waveguide, which only needs a one-mask etching process. The bandwidth is ultrawide, ~100 nm (1500-1600 nm) with a conversion efficiency of > 98%. The total length of the polarization converter is 116 μm, and its minimum fabrication tolerance is acceptable for modern nanofabrication technology.
Keywords :
etching; nanofabrication; nanophotonics; optical fabrication; optical waveguides; adiabatic tapered vertical slot waveguide; high efficiency broadband polarization converter; nanofabrication technology; one-mask etching process; tapered slot waveguide; transverse electric mode; transverse magnetic mode; wavelength 1500 nm to 1600 nm; Optical interconnects; photonic integrated circuits; polarization converter; slot waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2254706
