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A kind of optical transmitter and optical module

A technology of optical transmitter and laser, which is applied in the field of optical communication, can solve the problems of the time influence of DBR laser turning on and off, affecting the stability of ONU wavelength, affecting the stability of DBR laser laser wavelength, etc., to achieve the effect of wavelength stability

Active Publication Date: 2020-06-16
HISENSE BROADBAND MULTIMEDIA TECH
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Problems solved by technology

[0005] The present invention provides an optical transmitter and an optical module to solve the problem of further affecting the stability of the laser wavelength emitted by the DBR laser and seriously affecting the wavelength stability of the ONU due to the large impact on the turn-on and turn-off time of the DBR laser.

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  • A kind of optical transmitter and optical module
  • A kind of optical transmitter and optical module
  • A kind of optical transmitter and optical module

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0023] With the development of optical communication technology, in order to meet users' greater bandwidth requirements and reduce the cost of large-scale deployment of ultra-fast broadband, operators gradually apply TWDM (Time Wavelength Division Multiplexing) technology to ONUs. TWDM technology, as the name implies, is a new technology ...

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Abstract

The invention discloses an optical transmitter and an optical module, wherein the optical transmitter includes a laser driver and a DBR laser, the input end of the laser driver is used to receive a burst control signal; the first output of the laser driver The terminal is grounded, and the second output terminal is used for electrical connection with the anode of the DBR laser; the first differential switching terminal of the laser driver is used for electrical connection with the first working power supply and the anode of the laser. In the embodiment of this application, by connecting the first output terminal to the ground and the second output terminal to the anode of the laser, the laser driver can only absorb the bias current of the laser anode through the second output terminal, and connect to the DBR through the first differential switching terminal. The anode of the laser realizes the rapid turn-on and turn-off of the laser, and satisfies the emission of laser with a specific wavelength through the control of the second output terminal, and effectively improves the wavelength stability of the ONU.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical transmitter and an optical module. Background technique [0002] With the development of optical communication technology, a PON (Positive Optical Network, Passive Optical Network) system is widely used as an optical access system. PON systems generally include ONT (Optical Network Terminal, Optical Network Terminal) equipment and multiple ONUs (Optical Network Unit, Optical Network Unit), each ONU is usually equipped with an optical module, the optical module is connected to the ONT equipment, and receives the downlink through the optical fiber Optical signals or transmit upstream optical signals, the lasers of the optical modules of multiple ONUs share the same upstream optical channel. Taking the optical module that transmits upstream optical signals as an example, the ONU mainly includes a laser and a laser driver. The laser driver is used to receive...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/50H04B10/572
CPCH04B10/503H04B10/572
Inventor 李明薛登山王力赵其圣
Owner HISENSE BROADBAND MULTIMEDIA TECH
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