Patent ID: 11921398
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 11:
12. The communication system according to claim 9, wherein
the modulator comprises a first Mach-Zehnder interferometer and a second Mach-Zehnder interferometer,
the control signal indicates a first phase angle and a second phase angle,
the driver applies a first Mach-Zehnder bias voltage to the first Mach-Zehnder interferometer,
the driver applies a second Mach-Zehnder bias voltage to the second Mach-Zehnder interferometer,
the first Mach-Zehnder bias voltage corresponds to the first phase angle, and
the second Mach-Zehnder bias voltage corresponds to the second phase angle.