Detection pulse waveform self-tuning system and method based on PON link fault identification

A technology for detecting pulses and link faults, applied in electromagnetic wave transmission systems, transmission systems, electrical components, etc., can solve problems such as system misjudgment, threshold algorithm instability, single waveform retrieval pulse, etc., to reduce the misjudgment rate and optimize The probability of fault monitoring misjudgment and the effect of reducing the probability of single waveform misjudgment

CN109617600AActive Publication Date: 2019-04-12SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-04-12

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Abstract

The invention discloses a detection pulse waveform self-tuning system and method based on PON link fault identification. The system comprises a light source module, a light source driving module, a circulator, a two-dimensional encoding module, a light receiving module, a data acquisition card and a PC. In terms of method, the invention, based on software controlled retrieval waveform, finds the retrieval waveform with the largest difference from the reference signal in the case of open circuit as the optimal waveform, thereby reducing the false judgment rate and adapting to the environmentalchange of the optical fiber link.
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Description

technical field

[0001] The invention belongs to the technical field of optical fiber communication, and in particular relates to a detection pulse waveform self-adjustment system and method based on PON link fault identification. Background technique

[0002] With the sharp increase of people's demand for high-speed network, Passive Optical Network (PON) has become the most mainstream broadband access method due to its unique networking and broadband advantages. With the rapid growth of the number of network users and the continuous expansion of the scale of optical fiber links, the problems of management and fault detection of optical network links have become increasingly prominent. Most of the current detection systems are built with high-precision OTDR to achieve preventive detection, but this system is expensive and cannot be monitored dynamically in real time.

[0003] In order to solve the problem of passive optical network fiber link fault monitoring, the PON link f...

Examples

Embodiment Construction

[0029] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] The present invention proposes a detection pulse waveform self-debugging system based on PON link fault identification, such as figure 1 As shown, it includes a light source module, a light source driver module, a circulator, a two-dimensional encoding module, a light receiving module, a data acquisition card and a PC. The output end of the PC is connected to the input end of the light source driver module through the data acquisition card, and the output end of the light source driver module is connected to the light source module. The 2-port output, the multi-wavelength search pulse signal emitted from the circulator is input to the two-dimensional encoding module, and the two-dimensional encoding module outputs multiple sets of user monitoring signals through wavelength combination. The user monitoring signal is reflected after re...