Optical transmitter and optical transmission method
AssigneeNEC Corporation
InventorHirokazu Komatsu
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Abstract
To provide an optical transmitter and an optical transmission method that can maintain the quality of an optical output signal in a wide wavelength range, an optical transmitter comprises: an optical modulator that includes an electrode and outputs an optical output signal obtained by modulating input light according to a drive signal applied to the electrode; a driver circuit that generates a drive signal and is connected to the optical modulator to apply a drive signal to one end of the electrode; a first element that is connected to the other end of the electrode and terminates the drive signal; and a controller that sets a first resistance value of the first element and a drive amplitude of the drive signal.
Claims20
An optical transmitter comprising:
- an optical modulator, including an electrode, configured to output an optical output signal acquired by modulating input light according to a drive signal applied to the electrode;
- a driver circuit configured to generate the drive signal and to be connected to the optical modulator in such a way as to apply the drive signal to one end of the electrode;
- a first terminating resistor configured to be connected to another end of the electrode and terminate the drive signal;
- and
- a controller configured to set a first resistance value of the first terminating resistor and a drive amplitude of the drive signal.
An optical transmission method comprising:
- applying a drive signal generated in a driver circuit to one end of an electrode;
- outputting an optical output signal acquired by modulating input light according to a drive signal applied to the electrode;
- and
- setting a first resistance value of a first terminating resistor that is connected to another end of the electrode and terminates the drive signal, and a drive amplitude of the drive signal.
Dependencies are inferred from the claim text.