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US 2023/0057029 A1Published application
Optical transmitter, optical transmission system, and method of transmitting an optical signal
AssigneeNEC Corporation
InventorMingqi WU
Life of this patent
Estimating the term…
Abstract
To carry out automatic bias control to an optical modulator without a dither signal with reduced cost, an optical transmitter comprises a light source configured to output a light, an optical first modulator configured to modulate the light and output a first modulated optical signal, a DC component detector configured to detect a DC component of the first modulated optical signal and a controller configured to apply a first specific bias voltage identified based on the DC component to the optical first modulator.
Claims10
An optical transmitter comprising:
- a light source configured to output a light;
- an optical first modulator configured to modulate the light and output a first modulated optical signal;
- a DC component detector configured to detect a DC component of the first modulated optical signal;
- and
- a controller configured to apply a first specific bias voltage identified based on the DC component to the optical first modulator.
2 more elements
An optical system comprising:
- a light source configured to output a light;
- an optical first modulator configured to modulate the light and output a first modulated optical signal;
- a DC component detector configured to detect a DC component of the first modulated optical signal;
- and
- a controller configured to apply a first specific bias voltage identified based on the DC component to the optical first modulator.
2 more elements
A method of transmitting an optical signal, comprising:
- outputting a light;
- modulating the light and outputting a first modulated optical signal by a first optical modulator;
- detecting a DC component of the first modulated optical signal;
- and
- applying a first specific bias voltage identified based on the DC component to the first optical modulator.
2 more elements
Dependencies are inferred from the claim text.