公开(公告)号：US09817294B2

公开(公告)日：2017-11-14

申请号：US14748895

申请日：2015-06-24

Applicant: FUJIKURA LTD.

Inventor： Kazuhiro Goi ,  Hiroki Ishihara ,  Kensuke Ogawa ,  Kenji Oda ,  Hiroyuki Kusaka ,  Ryokichi Matsumoto ,  Hitoshi Uemura

IPC: G02F1/035 ,  G02F1/225 ,  G02F1/025 ,  G02F1/21 ,  G02B6/293 ,  G02B6/122 ,  G02B6/12 ,  G02B6/125

CPC classification number: G02F1/2257 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/125 ,  G02B6/29353 ,  G02B6/29355 ,  G02B2006/12097 ,  G02B2006/12142 ,  G02B2006/12147 ,  G02B2006/12159 ,  G02F1/025 ,  G02F1/218 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/58

Abstract: An optical modulation device configured of a planar optical waveguide, includes: a light incidence unit which allows light to be incident on the planar optical waveguide; a Mach-Zehnder interferometer which includes a first optical splitter section branching the light incident on the light incidence unit, two arm portions guiding the light branched by the first optical splitter section, a phase modulation unit linearly disposed on each of the two arm portions, and a first optical coupler section combining the light guided from the two arm portions; a light launching unit which launches the light combined by the first optical coupler section from the planar optical waveguide; and a traveling-wave electrode which includes an input unit and an output unit, and applies a voltage to the phase modulation unit.