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LED driver for high-speed optical communication based on linear modulation

A high-speed signal, high-speed technology, applied in the field of optical transmitters, can solve problems such as performance degradation of optical transmitters

Active Publication Date: 2020-03-10
KNOWLEDGE DEV FOR POF SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, current optical communication systems are particularly challenged when manufacturing electronic integrated circuits due to undesired supply voltage, temperature fluctuations or changes and / or due to local process variations (also referred to as process variations for Naturally occurring changes in the properties of electronic components such as transistors that lead to degradation in the performance of optical communication systems, especially optical transmitters

Method used

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  • LED driver for high-speed optical communication based on linear modulation
  • LED driver for high-speed optical communication based on linear modulation
  • LED driver for high-speed optical communication based on linear modulation

Examples

Experimental program
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Embodiment Construction

[0182] figure 1 A possible structure of the light emitting diode driving circuit 101 used in the optical transmitter 100 for driving the light emitting diode 110 is shown as an example.

[0183] For example, the driver circuit or driver 101 may thus include a high-speed signal path 102 including a high-speed transconductance amplifier 114 configured to linearly convert an input signal 106 to an output signal 109 for use in In the linear modulation of the LED 110.

[0184] The driver circuit 101 may also include a low frequency control path 103, wherein the low frequency control path may be configured to generate a transconductance 115 (G M ).

[0185] Additionally, the low frequency control path 103 may be configured to control the transconductance 116 of the high speed transconductance amplifier based on the transconductance 115 produced by the low frequency control path 103 .

[0186] Wherein, the input signal 106 may be a differential input signal, such as the differenc...

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Abstract

The present invention relates to a light-emitting diode drive circuit (101) for an optical transmitter (100), comprising: a high-speed signal path (102), including a high-speed transconductance amplifier (114) and a low-frequency control path (103), wherein the A high speed transconductance amplifier is configured to linearly convert an input signal to an output signal for linear modulation of a light emitting diode (110), wherein the low frequency control path is configured to generate a transconductance (115) based on a low frequency component of the input signal (106). ), and wherein the low frequency control path (103) is configured to control the transconductance (116) of the high speed transconductance amplifier (114).

Description

technical field [0001] The invention relates to a light emitting diode driver circuit of the type stated in the preamble of claim 1 of this patent and to an optical transmitter as stated in the preamble of claim 14 of this patent. Background technique [0002] Optical communication systems are now widely used in home networks and industrial applications. For example, the MOST (Media Oriented Systems Transport, Media Oriented Systems Transport, or Media Oriented Systems Transport) technology used in the automotive industry for high-speed multimedia networks is based on Plastic optical fiber (POF) technology. [0003] In said optical communication system, such as described in US 2013 / 0330082A1, an optical transmitting device, i.e. an optical transmitter, outputs an optical signal fed to an optical fiber link (e.g. a plastic fiber guiding an optical signal) to an optical Receiving device, optical receiver. [0004] Compared to conventional non-optical communication systems of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/50H05B44/00
CPCH04B10/502H05B45/395Y02B20/30H04B10/58H04B10/50
Inventor 路易斯·罗林德斯·阿尔韦里奇阿尔贝托·罗德里格·佩雷斯鲁本·佩雷斯·德·阿兰达·阿隆索
Owner KNOWLEDGE DEV FOR POF SL