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Crystalline organic semiconductor optical directional couplers and switches using an index-matching layer

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2 Author(s)
Zang, D.Y. ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA ; Forrest, S.R.

A directional coupler using crystalline organic semiconductor waveguides grown by the vacuum process of organic molecular beam deposition is demonstrated. An index-matching layer placed between two coupled waveguides separated by a 1 mu m gap greatly increases the coupling coefficient, significantly decreasing the coupling length and making the device very compact. Switching of 1.06 mu m wavelength light from one guide to another in the coupler has been observed by pumping the surface of one guide in the coupling region with 0.514 mu m.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:4 ,  Issue: 4 )