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DC-coupled laser drive circuit and method for driving laser diode device
US8958445B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8958445-B2 |
| Application number | US-201313855419-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 2, 2013 |
| Priority date | Jan 25, 2012 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
Official abstract text for this publication.
A DC-coupled laser drive circuit ( 1 ) includes (i) a voltage drop section ( 14 ) provided between a power source and a pre-driver ( 12 ) and (ii) a voltage drop amount controlling section ( 16 ) for controlling, according to an output of the pre-driver ( 12 ), an amount of a voltage drop in the voltage drop section ( 14 ).
First claim
Opening claim text (preview).
The invention claimed is: 1. A DC-coupled laser drive circuit comprising: a pre-driver for adjusting an amplitude of a voltage signal modulated by a data signal; a main driver, connected to a laser diode device without a capacitor in between, which converts, into an electric current signal to be supplied to the laser diode device, a voltage signal whose amplitude has been adjusted by the pre-driver; a voltage drop section provided between the pre-driver and a power source for…
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Classifications
Electricity · mapped topic
- H01S5/0261Primary
Electricity · mapped topic
- H01S5/0428Primary
Electricity · mapped topic
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- What does patent US8958445B2 cover?
- A DC-coupled laser drive circuit ( 1 ) includes (i) a voltage drop section ( 14 ) provided between a power source and a pre-driver ( 12 ) and (ii) a voltage drop amount controlling section ( 16 ) for controlling, according to an output of the pre-driver ( 12 ), an amount of a voltage drop in the voltage drop section ( 14 ).
- Who is the assignee on this patent?
- Fujikura Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01S5/0261. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).