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Distributed measurement method and system based on time division multiplexing and wavelength division multiplexing

A wavelength division multiplexing and time division multiplexing technology, applied in the field of distributed measurement methods and systems, can solve problems such as increasing system complexity and increasing cost, and achieve the effects of reducing cost, low complexity, and easy implementation

Inactive Publication Date: 2021-08-27
OTN INTELLIGENT TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this multiplexing method requires multiple light sources with different wavelengths and multiple parallel optical fibers, which greatly increases the complexity of the system and also increases the cost.

Method used

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  • Distributed measurement method and system based on time division multiplexing and wavelength division multiplexing
  • Distributed measurement method and system based on time division multiplexing and wavelength division multiplexing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a distributed measurement system based on time division multiplexing and wavelength division multiplexing, such as figure 1 shown, including:

[0045] Transmitter 1, used to emit pulsed light;

[0046] A number of optical sensing devices 2 are connected in series in the same optical path through the first optical fiber;

[0047] The receiving end 3 is used to receive the light fed back by the light sensor device 2;

[0048] After the transmitting end 1 emits the pulsed light source, it passes through all the optical sensor devices 2 in turn, and the optical sensor device 2 feeds back the optical signal to the receiving end 3 in the order of receiving the pulsed light source; after the receiving end 3 receives the optical signal, according to The order of the received optical signals corresponds to the optical sensing device 2 that feeds back the optical signals.

[0049] For example: the first received optical signal comes from the first opti...

Embodiment 2

[0058] This embodiment provides a distributed measurement method based on time division multiplexing and wavelength division multiplexing, such as figure 2 shown, including the following steps:

[0059] S1: Transmitter 1 emits pulse light;

[0060] S2: The light enters the optical path formed by the optical fiber, and several photosensor devices 2 are connected in series in the optical path;

[0061]S3: After receiving the pulsed light source, the optical sensing device 2 feeds back the optical signal to the receiving end 3 in the order of receiving;

[0062] S4: After receiving the optical signal, the receiving end 3 corresponds to the optical sensing device 2 that feeds back the optical signal according to the order of the received optical signal.

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Abstract

The invention relates to a distributed measurement method based on time division multiplexing and wavelength division multiplexing. According to the invention, the two optical fibers are used as the trunk, the light emitted by the transmitting end sequentially passes through the optical sensing device, the feedback light of the optical sensing device reaches the receiving end from the other light, distributed measurement of a plurality of optical sensing devices is realized by only needing one light source to emit the light, and the cost of the light source part is reduced. The whole system is low in complexity, small in occupied space and easy to implement.

Description

technical field [0001] The application belongs to the technical field of optical communication and sensor detection, and in particular relates to a distributed measurement method and system based on time division multiplexing and wavelength division multiplexing. Background technique [0002] Compared with cables, optical fibers have advantages in connection distance, expansion capability and performance. Therefore, optical communication instead of cable communication is the direction of future development. The distributed optical sensing system with optical communication as the backbone has also become a new hot spot because of its adaptability to optical fiber communication and the ability to resist electromagnetic interference. [0003] Currently, the multiplexing structure commonly used in this field is the wavelength division multiplexing structure. WDM (WavelengthDivision Multiplexing) is to combine a series of optical carrier signals of different wavelengths at the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/071H04B10/077H04J14/02H04J14/08
CPCH04B10/071H04B10/077H04J14/02H04J14/08
Inventor 刘晓海郭怡然
Owner OTN INTELLIGENT TECH (SUZHOU) CO LTD