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Optical signal detection method, device and system

A detection device and detection method technology, applied in the field of communication, can solve problems such as optical fiber misconnection, and achieve the effect of improving accuracy and detection and error correction capabilities

Inactive Publication Date: 2014-08-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the introduction of flexible grid, inverse multiplexing and coherent receiving technology of optical devices in related technologies, how to effectively perform optical fiber misconnection has not yet been proposed an effective solution

Method used

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  • Optical signal detection method, device and system
  • Optical signal detection method, device and system
  • Optical signal detection method, device and system

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Experimental program
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Effect test

Embodiment 1

[0054] This embodiment is to provide a method and device for detecting optical transmission network misconnection, so as to at least solve the problem of how to effectively perform optical fiber misconnection after introducing flexible grid, inverse multiplexing and coherent receiving technology of optical devices in the above-mentioned related technologies.

[0055] Beyond 100G (Beyond100G) technology has become a solution to the bandwidth growth demand. Whether it is 400G or 1T above 100G, the traditional 50GHz Fixed Grid (Wavelength Division Multiplexing, referred to as WDM) cannot provide Sufficient spectrum width to achieve beyond 100G technology. Due to the defects of the fixed grid, a wider flexible grid (Flexible Grid) is proposed.

[0056] Figure 4 It is a schematic diagram of the mapping and multiplexing processing flow of ODUCn-OTUCnAG-OCh according to Embodiment 1 of the present invention. The ODUCn loaded with super 100G services is finally transmitted at the op...

Embodiment 2

[0070] Figure 9 It is a schematic diagram of a scene where misconnection occurs according to Embodiment 2 of the present invention, such as Figure 9 As shown, at nodes A and D, an ODUflex container loaded with 1T rate Ethernet services is mapped into OPUC10 / ODUC10 respectively.

[0071] At node A, the ODUC10 container is inversely multiplexed into three ODUCmTG (Transport Group), which are two ODUC4TG (400Gbit / s) and one ODUC2TG (200Gbit / s), and these three ODUCmTG are switched to a on the line card. On this line card, three ODUCmTGs are independently mapped to one OTUCmTG, respectively, ODUC4TG is mapped into OTUC4TG and ODUC2TG is mapped into OTUC2TG. After the two OTUC4TG and OTUC2TG are converted into optical signals, they respectively transmit three frequency sequences (Frequency Slot) through the optical transmitter, namely FS1 (Frequency Slot1, transmitting 400Gbit / s), FS2 (Frequency Slot2, transmitting 200Gbit / s ) and FS3 (Frequency Slot3, transmitting 400Gbit / s),...

Embodiment 3

[0089] Figure 12 is a schematic diagram of a scene where a wrong connection occurs according to Embodiment 3 of the present invention, such as Figure 12 As shown, in this embodiment, at node A, an ODUC10 container loaded with 1T rate Ethernet services passes through nodes A, B and C, and how to detect the wrong connection inside node C is given.

[0090] Step 1: At node A, the ODUC10 container is inversely multiplexed into three ODUCmTGs (Transport Groups), which are two ODUC4TGs (400Gbit / s) and one ODUC2TG (200Gbit / s). After the three ODUCmTGs pass through the cross matrix, One ODUC4TG and one OTUC2TG are switched to one line card, and the remaining ODUC4TG is switched to another line card separately. On these two line cards, the three ODUCmTGs are independently mapped to one OTUCmTG, namely ODUC4TG is mapped into OTUC4TG and ODUC2TG is mapped into OTUC2TG. After the two OTUC4TG and OTUC2TG are converted into optical signals, they respectively transmit three frequency seq...

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Abstract

Disclosed are a method, device, and system for detecting an optical signal. The method comprises: an optical signal receiver node receives from an optical signal transmitter node an optical channel signal and in-band overhead information of the optical channel signal; and, the optical signal receiver node detects the optical channel signal for a faulty connection on the basis of the in-band overhead information, and, in a case that the presence of a faulty connection is determined, generates corresponding warning information; the in-band overhead information carries an optical channel trail trace identifier and an optical channel signal symmetric central frequency. The present invention solves the problem in the prior art of effective detection of a faulty connection of an optical fiber when a reception technology related to flexible grid, inverse multiplexing, and optical component is introduced, thus increasing for the system the accuracy in optical signal reception and capability for error detection and correction.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a method, device and system for detecting an optical signal. Background technique [0002] The development trend of optical transmission technology presents a higher single-channel rate (for example, single-channel 400G / 1T transmission), higher spectral efficiency and high-order modulation format. Therefore, continuing to increase the rate is still the clearest and most important direction for the development of optical transmission. . High-speed transmission faces many limitations, mainly in two aspects: On the one hand, optical transmission technology is developing towards high-spectrum-efficiency aggregation transmission and high-speed service interface transmission. If the spectral efficiency cannot continue to improve, low-speed convergence to high-speed retransmission is meaningless. However, since the client side may still have a high-speed Ethernet interface, the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/077
CPCH04B2210/072H04J3/1652H04J2203/0058H04B10/077H04B10/0795
Inventor 付锡华张新灵
Owner ZTE CORP