Patent ID: 11885841
Assignee: HOSEI UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The electric field sensor according to claim 1, wherein the electro-optic crystal comprises:
a first optical waveguide on which light of the light source is incident;
a first electrode which is connected to a first output of the first optical waveguide and to which the electric field generated by the target is input;
a second electrode which is connected to the first electrode and to which the electric field based on the reference signal is applied;
a third electrode which is connected to the first output of the first optical waveguide and grounded; and
a second optical waveguide having a first input to which the second electrode is connected, a second input to which the third electrode is connected, and an output connected to the light receiver.