Patent ID: 9274355
Filing Date: 2016-03-01
CPC Classification: G02F,Y10T

Claim Text:
1. An electro-optic modulator, comprising: a substrate comprising a top surface; a Y-shaped waveguide formed on the substrate and comprising a major branch and a modulating branch parallel to the major branch; a first pair of electrodes comprising a first electrode and a second electrode parallel to the first electrode; and a second pair of electrodes comprising a third electrode and a fourth electrode parallel to the third electrode; wherein the first pair of electrodes have a same structure as the second pair of electrodes; the first electrode formed on the modulating branch and a length of the first electrode is equal to a length of the modulating branch; the second electrode is opposite to the modulating branch away from the major branch; the third electrode formed on the major branch and a length of the third electrode is equal to a length of the major branch; the fourth electrode is opposite to the major branch and away from the modulating branch; the first electrode and the fourth electrode are electrically connected to a modulating power supply, the second electrode and the third electrode are grounded; wherein the Y-shaped waveguide comprising an input section and an output section; the major branch and the modulating branch diverge from the input section and converge into the output section; the major branch, the input section, and the output section formed a straight transmission channel; the modulating branch is substantially parallel with the major branch; wherein the Y-shaped waveguide further includes an input branch and an output branch; one end of the input branch is connected with the major branch and the input section, another end of the input branch is connected with the modulating branch; an angle between the output branch and the major branch is the same with an angle between the input branch and the major branch.