Low power electro-optic modulator

摘要

An electro-optic modulator includes a substrate, a pair of transmission lines, a first strip-shaped electrode, and a pair of second strip-shaped electrodes. The substrate includes a surface and a reversely-polarized portion. The transmission lines are formed in the surface and extend substantially in parallel with each other. One of the transmission lines is formed within the reversely-polarized portion and the other is out of the reversely-polarized portion. The first strip-shaped electrode is formed on the surface and covers the transmission lines. The second strip-shaped electrodes are positioned at two sides of the first strip-shaped electrodes and parallel with the first strip-shaped electrode.

主权项

1. An electro-optic modulator, comprising:
a substrate comprising a surface and a reversely-polarized portion; a pair of transmission lines embedded in the surface and extending substantially in parallel with each other, one of the transmission lines being formed within the reversely-polarized portion and the other being out of the reversely-polarized portion, wherein each of the transmission lines has a semi-cylinder configuration and an output section extending out from one end of the transmission line, the output sections diverge, and only one of the transmission lines has an input section extending from another end of the transmission line opposite to the corresponding output section and forms an entrance at a side of the substrate; a first strip-shaped electrode formed on the surface and covering the transmission lines; and a pair of second strip-shaped electrodes positioned at two sides of the first strip-shaped electrode and parallel with the first strip-shaped electrode.