Structure and application of sunk type direct modulation laser and driver

A technology of drivers and lasers, which is applied to lasers, laser components, semiconductor lasers, etc., can solve the problems of increasing power consumption of driver circuits and high current consumption of drivers, and achieve the effects of simplifying production and improving performance

Active Publication Date: 2018-11-30
成都英思嘉半导体技术有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

In both configurations, the driver consumes additional current I due to current modulation in driver , resulting in higher current consumption of the driver
This additional current consumption in the driver increases the power consumption of the driver circuit

Method used

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  • Structure and application of sunk type direct modulation laser and driver
  • Structure and application of sunk type direct modulation laser and driver
  • Structure and application of sunk type direct modulation laser and driver

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Embodiment Construction

[0028] In the following, the present invention will be further described in detail in conjunction with the accompanying drawings and embodiments, so as to make the purpose, technical solutions and advantages of the present invention more clear. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] image 3 The topology of a sinking DML and driver according to an exemplary embodiment of the present invention is shown. In the topology of this embodiment, the DML and the driver are connected in series, and the anode of the DML serves as the RF ground RF GND, while the cathode of the DML passes the driver current I driver And is modulated. The total current I of the DML laser laser sinks, flows into, or sucks into the drive, so I driver with I laser equal. This series sink DML driver is the most efficient topology because the driver is in series with the laser and the ...

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Abstract

The invention discloses a structure and application of a sunk type direct modulation laser and a driver, which can reduce the power consumption of the driver and improve the high-speed performance ofthe driver; the integration is high; and the volume is small. In the structure, the DML is connected with the driver in series, wherein the anode of the DML is grounded as a radio frequency, and the cathode of the DML is connected with a radio frequency connection node of the driver; the radio frequency input signal is converted into a driver current by the driver to modulate the DML current; theDML current is completely sunk, flows into, or is drawn into the driver; and the drive current is equal to the DML current.

Description

technical field [0001] The present invention relates to the technical field of directly modulated laser (Directly Modulated Laser, DML) driving, in particular to a structure and application of a sunken directly modulated laser and a driver. Background technique [0002] Directly modulated lasers are widely used in optical communications using single-mode fibers. DML is more advantageous in terms of cost and power than other solutions, such as Electrically Modulated Laser (EML) or Mach-Zehnder (MZ) modulators that require an external laser. As the packaging structure of optical modules in the optical communication market continues to shrink (for example, from CFP to QSFP28 for 100Gbs applications), there is an increasing need to reduce power consumption in optical modules to achieve more effective thermal management in a smaller space. [0003] Current modulation in DMLs produces light modulations for data transmission over optical fibers. The current in a laser is typicall...

Claims

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Application Information

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IPC IPC(8): H01S5/042
CPCH01S5/042
Inventor 维卡斯·马南
Owner 成都英思嘉半导体技术有限公司
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