Title :
Broadband silica-based optical waveguide coupler with asymmetric structure
Author :
Takagi, A. ; Jinguji, K. ; Kawachi, M.
Author_Institution :
NTT Optoelectron. Labs., Ibaraki, Japan
Abstract :
Waveguide-type directional couplers with different waveguide widths in the coupling region are fabricated based on high silica on Si technologies. These asymmetric couplers show wavelength-flattened coupling ratios of 50%+or-5% over the 1.2 mu m-1.6 mu m wavelength range.
Keywords :
directional couplers; optical communication equipment; optical couplers; 1.2 to 1.6 micron; SiO 2-Si; asymmetric structure; directional couplers; high silica on Si technologies; optical communication; optical waveguide coupler; wavelength-flattened coupling ratios;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900090
