Leaky mode directional coupler for prism coupling interconnection

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...

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Bibliographic Details
Published in:IEEE photonics technology letters 2006-01, Vol.18 (1), p.34-36
Main Authors: Park, Yongwoo, Suh, Dongwoo, Sohn, Yeungjoon, Chung, Hee-Sook, Paek, Mun Cheol, Park, Man Yong
Format: Article
Language:English
Subjects:
Beams (radiation)
Biomedical optical imaging
Diffraction
Directional couplers
Gaussian
Joining
Leaky modes
Leaky waves
Optical beams
Optical coupling
optical directional couplers
Optical interconnections
optical planar waveguide couplers
Optical planar waveguides
Optical waveguide theory
Optical waveguides
Planar waveguides
Prisms
Slabs
Waveguides
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Summary: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.859998