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US 2026/0149236 A1Published application
Laser diode driving circuit and laser diode driving method
AssigneeNEC Corporation
InventorsSeigo TAKAHASHI, Hiroki KAWAHARA
Life of this patent
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Abstract
There is provided a laser diode driving circuit including a pulse-modulated bias applying circuit that applies a pulse-modulated bias to a laser diode to bring the laser diode in pulse oscillation, a reverse bias current applying circuit that applies a reverse bias to the laser diode to make a gain of the laser diode temporarily negative during the pulse oscillation, and a clock source that synchronizes the pulse-modulated bias and the reverse bias.
Claims18
A laser diode driving circuit comprising:
- a pulse-modulated bias applying circuit configured to apply a pulse-modulated bias to a laser diode to bring the laser diode in pulse oscillation;
- a reverse bias current applying circuit configured to apply a reverse bias to the laser diode to make a gain of the laser diode temporarily negative during the pulse oscillation;
- and
- a clock source configured to synchronize the pulse-modulated bias and the reverse bias.
1 more element
A laser diode driving method comprising:
- applying a pulse-modulated bias to a laser diode to bring the laser diode in pulse oscillation;
- applying a reverse bias to the laser diode to make a gain of the laser diode temporarily negative during the pulse oscillation;
- and
- synchronizing the pulse-modulated bias and the reverse bias.
1 more element
Dependencies are inferred from the claim text.