Discretely designed 10G burst transmitter

A transmitter and laser technology, applied in the field of optical communication, can solve the problems of expensive IC, complicated circuit design, difficult debugging, etc., and achieve the effect of low cost and simple structure

Active Publication Date: 2012-07-04
SHENZHEN GONGJIN ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few design schemes for symmetrical 10G EPON ONU optical modules. 10G high-power lasers are expensive, and customers have not conveyed more needs to IC designers.
[0003] At present, the well-known symmetrical 10G EPON ONU optical module design scheme is Gennum's GN7355, but the price of this IC is relatively expensive, and in the actual application process, it is difficult to debug, the eye diagram is difficult to adjust, and the choice of components is too large. sensitive
In addition, the circuit design is relatively complicated, and a separate power supply needs to be provided for the laser, which cannot be directly powered by the module power supply, because the headroom of the modulation end of its laser driver is not enough.
This not only increases the cost, but also increases the difficulty of layout

Method used

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  • Discretely designed 10G burst transmitter
  • Discretely designed 10G burst transmitter

Examples

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Effect test

Embodiment 1

[0016] Example 1, such as figure 1 As shown: this embodiment is a discretely designed 10G burst transmitter, which is set on the optical network unit ONU, and the optical network unit ONU provides it with power supply, burst enable signal, and differential signal that needs to be modulated. Such as figure 1 As shown, the transmitter includes a 10G continuous mode laser driver 10G CM LD Driver, a micro control unit MCU, a 1270nm high-power laser LD, a DC-DC boost unit, a first burst control unit, and a second burst control unit.

[0017] The micro control unit is connected with the 10G continuous mode laser driver, configures the registers of the 10G continuous mode laser driver and controls the output size of the modulation current and the bias current of the laser.

[0018] 10G continuous mode laser driver drives the laser, 10G CM LD Driver, can choose from 10G direct modulation driver, the advantage is that there are many choices, the price is cheap, the principle is that t...

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Abstract

The invention provides a discretely designed 10G burst transmitter, which comprises a laser, a laser driver and a microprocessor for controlling the driver, and is characterized by also comprising a first burst controller and a second burst controller which are controlled by a burst enabling signal provided in a terminal system, wherein the first burst controller is arranged on a differential signal line of the terminal system input to the laser driver to control modulation current of the laser driver; the second burst controller is arranged at a power input end of the laser to control bias current of the laser; and the micro control unit is configuring a register of the laser driver and controlling output amplitudes of the modulation current and the bias current of the laser. The laser burst transmitter provided by the invention has a simple structure and is low in cost.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an optical modulation device, which is a discretely designed 10G burst transmitter, which is applied to the design of a laser drive circuit for a 10G signal transmitting end in a symmetrical 10G EPON ONU optical module. Background technique [0002] The application of PON (Passive Optical Network) technology is very common now. The construction of EPON / GPON (Ethernet PON / Gigabit-Capable PON) optical network has reached a certain scale, and the terminal technology of ONU (Optical Network Unit) has been quite mature. However, in view of the transmission capability of EPON / GPON optical network technology, especially the limitation of downlink bandwidth and the increasing demand for terminal data, the 10G EPON technical standard was officially released in 2009. For the asymmetric terminal products and solutions in 10G EPON, each integrated circuit designer and module design...

Claims

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Application Information

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IPC IPC(8): H04B10/155H04B10/50
Inventor 王侃王志波邓永坚王彦伟郭小东
Owner SHENZHEN GONGJIN ELECTRONICS CO LTD
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