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Optical signal processing method and device

A technology of a processing method and a processing device, which is applied in the field of communication, can solve problems such as high cost of signal processing methods, and achieve the effect of reducing costs

Inactive Publication Date: 2018-03-06
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide an optical signal processing method, which solves the problem of high cost in the prior art signal processing method

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  • Optical signal processing method and device
  • Optical signal processing method and device

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Embodiment Construction

[0026] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0027] Such as figure 1 As shown, an embodiment of the present invention provides an optical signal processing method, including the following steps:

[0028] Step S101, receiving an optical signal sent by an optical line terminal.

[0029] In this embodiment, the above-mentioned optical signal is an optical signal generated and sent by an optical line terminal, and the optical signal is an intensity real number O-OFDM signal that can be directly detected and normally demodulated. The process of generating a real OFDM signal can be as follows figure 2 As shown, the serial-to-parallel conversion of the bit sequence is performed to obtain a parallel signal, and then the parallel signal is subjected to QAM decoding, and the QAM-decoded signal is subjecte...

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Abstract

The invention provides an optical signal processing method and a device. The optical signal processing method comprises the steps of receiving an optical signal sent by an optical line terminal; detecting the transmission distance between the optical line terminal and an optical network unit; if the transmission distance is a preset long distance, coupling the optical signal with a preset local oscillator laser signal in an optical coupler, so as to generate a first coupling signal; obtaining an output signal of a receiving module of the optical network unit according to the first coupling signal; if the transmission distance is not the preset long distance, coupling the optical signal in the optical coupler, so as to generate a second coupling signal; and obtaining an output signal of thereceiving module of the optical network unit according to the second coupling signal. In this way, the switching between the receiving modes of different distance optical network units can be realized, and the cost of optical network units is reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular to an optical signal processing method and device. Background technique [0002] With the explosive growth of data services such as mobile Internet and big data, applications such as high-definition video, virtual reality, smart home, and Internet of Things have been widely used in people's daily life and work. How to improve the access capacity of optical transmission has become a At present, the industry is very concerned about the issue. The limitation of device bandwidth and the influence of fiber dispersion limit the improvement of access capacity, and optical orthogonal frequency division multiplexing (Optical Orthogonal Frequency Division Multiplexing, O-OFDM) technology has the advantages of high spectral efficiency and strong anti-dispersion ability, which can It is used in high-capacity access networks. [0003] At present, O-OFDM technologies applicable to access netwo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/67H04B10/69
CPCH04B10/67H04B10/691
Inventor 孙二坤乔耀军周骥郭梦琪唐玺孜
Owner ZTE CORP