| 摘要 |
A connector is provided for connecting to a pad of a signal electrode selectively formed over a dielectric buffer layer which extends over a crystal substrate of an optical device wherein a recess is selectively formed in an upper region of the crystal substrate so that the recess is positioned in the vicinity of the pad. The dielectric buffer layer and the signal electrode are not formed over the recess so that the connector is received securely in the recess whereby a side face of the connector is made into directly contact with a side face of the pad, and a top of the connector has substantially the same level as a top of the pad to allow a majority of microwave to travel between top surface regions of the pad and the connector without substantial loss.
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