| 摘要 |
According to one method, a variable optical attenuator structure is provided comprising a waveguide core, a cladding, an electrooptic polymer, and a set of control electrodes. The core, the cladding, and the electrooptic polymer are configured such that an increase in the index of refraction of the polymer, dominated by an electrooptic response resulting from the Kerr Effect, causes a substantial portion of an optical signal propagating along the waveguide core to couple into a relatively high index region of the electrooptic polymer above the 10 waveguide core, so as to inhibit return of the coupled signal to the waveguide core. In a second invention the core and electrooptic polymer share a common interface along a portion of a core layer. |
