公开(公告)号：US20150234252A1

公开(公告)日：2015-08-20

申请号：US14704072

申请日：2015-05-05

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： Masaki SUGIYAMA

IPC: G02F1/225 ,  G02F1/035

CPC classification number: G02F1/225 ,  G02F1/011 ,  G02F1/035 ,  G02F1/3136 ,  G02F2001/212

Abstract: An optical modulator includes a first coupler that branches an input light into two and outputs a first output light and a second output light; a first Mach-Zehnder interferometer (MZI) that modulates the intensity of the first output light from the first coupler and outputs a third output light; a second MZI that modulates the intensity of the second output light from the first coupler and outputs a fourth output light; a second coupler that combines the third output light from the first MZI and the fourth output light from the second MZI, branches a combined light into two, and outputs a fifth output light and a sixth output light. The interaction length of a branch of the first coupler and that of the second coupler are set such that the wavelength dependence of the splitting ratio of the first coupler is inversely related to that of the second coupler.

Abstract translation: 光调制器包括将输入光分为两个并输出第一输出光和第二输出光的第一耦合器; 第一马赫 - 策德尔干涉仪（MZI），其调制来自第一耦合器的第一输出光的强度并输出第三输出光; 第二MZI，其调制来自第一耦合器的第二输出光的强度并输出第四输出光; 组合来自第一MZI的第三输出光和来自第二MZI的第四输出光的第二耦合器将组合的光分为两个，并输出第五输出光和第六输出光。 将第一耦合器的分支与第二耦合器的分支的相互作用长度设置为使得第一耦合器的分束比的波长依赖性与第二耦合器的波长相关。