Title :
Highly efficient coupling between two planar waveguides with different refractive index profiles by using nonlinear cladding
Author :
Ono, Kazuo ; Tsuruta, Shoichi ; Sakai, Tamotsu ; Osawa, Hisashi ; Okamoto, Yoshihiro
Author_Institution :
Fac. of Eng., Ehime Univ., Matsuyama, Japan
fDate :
4/1/1992 12:00:00 AM
Abstract :
An efficient butt-joined coupling scheme between single-mode planar waveguides with different refractive index profiles is proposed. The configuration consists of a tapered waveguide with nonlinear cladding. Power dependent coupling efficiency of the configuration is analyzed by the beam propagation method. The numerical results show that this configuration has high-coupling efficiency and is less sensitive to the offset between coupled waveguides if the input power is properly selected.<>
Keywords :
claddings; integrated optics; nonlinear optics; optical couplers; optical waveguide theory; refractive index; beam propagation method; butt-joined coupling scheme; coupled waveguides; high-coupling efficiency; input power; nonlinear cladding; planar waveguides; power dependent coupling efficiency; refractive index profiles; single-mode; tapered waveguide; Couplings; Nonlinear optics; Optical fiber couplers; Optical refraction; Optical sensors; Optical variables control; Optical waveguides; Optimized production technology; Planar waveguides; Refractive index;
Journal_Title :
Photonics Technology Letters, IEEE
