Title :
Leaky mode directional coupler for prism coupling interconnection
Author :
Park, Yongwoo ; Suh, Dongwoo ; Sohn, Yeungjoon ; Chung, Hee-Sook ; Paek, Mun Cheol ; Park, Man Yong
Author_Institution :
Basic Res. Lab., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
A leaky mode directional coupler was fabricated with its beam shaped into a Gaussian-like profile and was experimentally demonstrated for suppressing the diffraction of an out-coupled beam. The demonstrated coupler consists of a multilayered waveguide with six layers that are embedded in a symmetric slab waveguide. The out-coupled beam profile was measured to be shaped into a Gaussian function by using the prism coupling method. There was an excellent agreement between the measured and theoretically predicted coupling angles, and it was also confirmed that the diffraction was suppressed.
Keywords :
Gaussian distribution; integrated optics; laser beams; light diffraction; optical directional couplers; optical interconnections; optical multilayers; optical prisms; Gaussian function; Gaussian-like profile; diffraction suppression; directional coupler; leaky mode coupler; multilayered waveguide; optical beam shaping; out-coupled beam profile; prism coupling interconnection; symmetric slab waveguide; Biomedical optical imaging; Directional couplers; Optical beams; Optical coupling; Optical interconnections; Optical planar waveguides; Optical waveguide theory; Optical waveguides; Planar waveguides; Slabs; Leaky waves; optical directional couplers; optical interconnections; optical planar waveguide couplers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.859998
