公开(公告)号：US20250013118A1

公开(公告)日：2025-01-09

申请号：US18738630

申请日：2024-06-10

Applicant: TDK CORPORATION

Inventor： Hiroki HARA ,  Yasuhiro Takagi

IPC: G02F1/21 ,  G02F1/03 ,  G02F1/035

Abstract: An electro-optical element includes a substrate, and an optical functional layer formed on a main surface of the substrate, in which the optical functional layer includes an optical-input-side optical waveguide configured to guide light emitted from a light source, an optical branch part configured to branch the optical-input-side optical waveguide into two optical-modulation optical waveguides, a Mach-Zehnder optical modulation part configured to modulate light guided through the two optical-modulation optical waveguides, an optical coupling and branch part configured to branch the two optical-modulation optical waveguides configured to guide modulated light modulated by the Mach-Zehnder optical modulation part into one monitoring optical waveguide and a plurality of optical-output-side optical waveguides, and an optical coupling part configured to make the plurality of optical-output-side optical waveguides as one optical-output optical waveguide.