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Optical module and twdm passive optical network

A passive optical network and optical module technology, applied in the direction of optical fiber transmission, elimination of distortion/chromatic dispersion, etc., can solve the problem that optical modules cannot transmit low-cost optical signals over long distances, and achieve the effect of reducing costs

Active Publication Date: 2020-08-07
HISENSE BROADBAND MULTIMEDIA TECH
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Problems solved by technology

[0005] In order to solve the technical problem that the optical module in the related art cannot realize the long-distance transmission of the optical signal at low cost, the present invention provides an optical module, which includes a laser and its driving circuit, the laser is a DML laser, and the driving circuit uses Drive the DML laser to emit an optical signal with a wavelength of 1260nm-1280nm according to the received electrical signal

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  • Optical module and twdm passive optical network
  • Optical module and twdm passive optical network
  • Optical module and twdm passive optical network

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Embodiment Construction

[0016] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as recited in the appended claims.

[0017] figure 2 It is a schematic structural diagram of an optical module shown according to an exemplary embodiment. A DML laser 131 and its driving circuit 132 are used in the optical module 130. The driving circuit 132 is used to drive the DML laser 131 according to the received electrical signal to emit a wavelength of 1260nm-1280nm optical signal.

[0018] When the optical module 130 transmits and receives optical signals, power loss due to dispersion caused by factors such as intersymbol interference and laser chirp needs to be considered.

[0019] The impact...

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Abstract

The invention discloses an optical module and a TWDM passive optical network, belonging to the technical field of optical fiber communication. The optical module includes a laser and its driving circuit, the laser is a DML laser, and the driving circuit is used to drive the DML laser to emit an optical signal with a wavelength of 1260nm-1280nm according to the received electrical signal. The optical module and the TWDM passive optical network can realize long-distance transmission of optical signals at low cost.

Description

technical field [0001] The invention relates to the field of computer application technology, in particular to an optical module and a TWDM passive optical network. Background technique [0002] With the continuous improvement of users' demand for network bandwidth, the passive optical network technology has also been developed at a high speed. In the current TWDM passive optical network, the NGPON2 standard is usually adopted, figure 1 It is the definition standard for uplink and downlink wavelengths in the existing NGPON2 standard. [0003] Such as figure 1 As shown, in the NGPON2 standard, the wavelength of the uplink optical signal is 1524-1544nm. If the optical module uses a DML (Directly Modulated Laser, direct modulator laser) laser, since the DML laser emits an uplink optical signal with a wavelength of 1524-1544nm, it will Severe dispersion occurs, resulting in power loss of optical signals, which makes the optical modules in the TWDM passive optical network unab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2513
CPCH04B10/2513
Inventor 薛登山赵其圣
Owner HISENSE BROADBAND MULTIMEDIA TECH