Title :
Experimental Demonstration of a High Efficiency Polarization Splitter Based on a One-Dimensional Grating With a Bragg Reflector Underneath
Author :
Wang, Zhechao ; Tang, Yongbo ; Wosinski, Lech ; He, Sailing
Author_Institution :
Sch. of Inf. & Commun. Technol., R. Inst. of Technol. (KTH), Stockholm, Sweden
Abstract :
A one-dimensional grating serving both as a polarization beam splitter and a vertical coupler for silicon photonic circuits is designed, fabricated, and characterized. Bragg reflectors are employed to improve greatly the coupling efficiency. Over 50% efficiency for both polarizations are achieved experimentally, and the extinction ratio between them is also high ( -20 dB).
Keywords :
Bragg gratings; elemental semiconductors; integrated optics; light polarisation; optical beam splitters; optical couplers; optical design techniques; optical fabrication; silicon; Bragg reflectors; Si; coupling efficiency; extinction ratio; high efficiency polarization splitter; one-dimensional grating; polarization beam splitter; silicon photonic circuits; vertical coupler; Couplers; Couplings; Gratings; Optical fiber couplers; Optical fiber polarization; Photonics; Bragg reflector; grating coupler; integrated optics; polarization splitter; silicon-on-insulator (SOI);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2070792
