Optical waveguide parabolic coupling horns
Authors:
- 1 January 1977
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 30 (1) , 28-30
Abstract
We propose parabolic‐shaped coupling horns to provide adiabatic transition regions between wide‐ and narrow‐channel optical waveguides. The parabolic shape is shown to derive from a simple ray model of channel propagation and is consistent with diffraction theory in the wide‐channel limit. An approximate mode dispersion theory is used to convert the criteria into a horn design for indiffused channel waveguides. Experimental horn transmission measurements of nearly 90% are reported for transitions from 25 μm to 8, 6, and 4 μm in Ti:LiNbO3 waveguides at 0.6328 μm.Keywords
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