Analysis of coupling characteristics of rectangular core optical waveguide coupler
نویسندگان
چکیده
A theoretical formulism based on the boundary matching technique has been proposed to study the systematic of an asymmetric waveguide coupler. Same formulism is applicable to a symmetric coupler. The equivalent parallel coupling length to account for the coupling in the two S-shaped regions in the input and the output of the coupler is obtained from the coupler geometry and is dealt with more accurately and 'sensitively in our calculations. No fitting parameter is required for our calculation. The calculated characteristics of the asymmetric coupler are very close to those of experimental ones. Our model can aid in the design of diffused channel single mode rectangular core optical waveguide couplers.
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