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

Claim 8:
9. A communication system comprising:
a pluggable optical module; and
a host communication apparatus outputting a data signal and a control signal to the pluggable optical module,
wherein
the optical module comprising:
an electrical connector configured to connect with the host communication apparatus;
an optical connector;
an optical light source configured to output a light;
a Mach-Zehnder modulator, including a first optical waveguide and a second optical waveguide, configured to output an optical signal generated by interference between a first light passing through the first optical waveguide and a second light passing through the second optical waveguide; and
a driver configured to drive the modulator based on the data signal and apply a bias voltage to the modulator,
the bias voltage corresponding to a phase difference between the first light and the second light based on an angle indicated by the control signal.