| 摘要 |
The present invention relates to a bidirectional guided optical router comprising an evanescent-field optical coupler having three input gates, three output gates, a first central waveguide, a second lateral waveguide and a third lateral waveguide and an evanescent-field-based optical coupling zone in which said first, second and third waveguides are disposed in such a way as to allow evanescent-field-based coupling between the first central waveguide and either one of the second and third lateral waveguides. According to the invention, said 3x3 optical coupler has a length L of between 3154 x Leq and 2 x Leq in such a way that an optical beam coupled on the first input gate having a power p and propagating on the first waveguide in the forward direction is distributed according to the following distribution: a first secondary beam having a power greater than or equal to 90% of p/2 on the second output gate, another secondary beam having a same power greater than or equal to 90% of p/2 on the third output gate. |
