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Controlling the optical properties of intersecting waveguides: fractionally doping the intersection region

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3 Author(s)
Gill, D.M. ; Wisconsin Univ., Madison, WI, USA ; McCaughan, Leon ; Agrawal, Niraj

Modification of the refractive index of the region common to intersecting waveguides (fractional doping) provides a mechanism independent of intersection angle, for controlling the optical coupling characteristics of this geometry. The authors derive a pair of expressions based on a multiple scattering analysis of intersecting waveguides which predict the coupling behavior as a function of intersection angle and fractional doping for both polarizations. The expressions are in good agreement with experimental data from several different laboratories. The conditions for polarization-independent coupling and polarization splitting are demonstrated

Published in:

Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 3 )

Date of Publication:

Mar 1991

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