Wavelength redundancy device and wavelength redundancy method

By designing a wavelength redundancy device that requires only one redundant 100Gbps transponder in systems with different WDM transmission speeds, the cost and space problems caused by setting up redundant devices for each transmission speed in the existing technology are solved. Effective redundancy for multiple transmission speed signals is achieved.

Inactive Publication Date: 2019-03-29
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When realizing large-capacity optical transmission, only increasing the number of wavelength division multiplexing and laying a new optical fiber network cannot fully meet the demand. In recent years, the transmission speed of a single transponder has rapidly developed from the previous 10Gbps to 40Gbps, 100Gbps, and 400Gbps

Method used

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Examples

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Embodiment approach 1

[0029] figure 1 A configuration example of a terminal device including the wavelength redundancy device according to Embodiment 1 of the present invention is shown.

[0030] The terminal device includes: optical couplers 2a-2c for bifurcating the client signals 1a-1c transmitted from the backhaul line side; a 10Gbps transponder 3a (existing transponder) with a client interface based on 10Gbps; 40Gbps transponder 3b (legacy transponder) with 4 10Gbps-based client interfaces; 100Gbps transponder 3c (legacy transponder) with 10 10Gbps-based client interfaces; selectively on incoming signals Output M:N switch 40 (selection switching unit); and redundant 100Gbps repeater 50 having ten 10Gbps-based client interfaces. also, figure 1 In the figure, only components related to redundancy are shown in the figure, and components for processing such as wavelength division multiplexing and amplification are omitted.

[0031] The client signal 1a is one 10Gbps signal corresponding to the ...

Embodiment approach 2

[0066] Figure 6 A configuration example of a terminal device including the wavelength redundancy device according to Embodiment 2 of the present invention is shown.

[0067] In Embodiment 1, redundancy is shown when there are different WDM transmission speeds at the same time, but the transmission speed of the client signal is the same, while in Embodiment 2, it is shown that there are different WDM transmission speeds at the same time, and the transmission speed of the client signal There is also a variety of redundancy at the same time.

[0068] The terminal device includes: optical couplers 2d and 2e for bifurcating client signals 1d and 1e transmitted from the backhaul line side; 10Gbps transponder 3d (existing transponder); respectively have one e (e is an integer greater than 1) slice 100Gbps transponder 3e (existing transponder) based on a 100Gbps client interface; selectively select the input signal Output M:N switch 42, N:1 switch 43; muxponder 80 having 10 client ...

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Abstract

Optical couplers (2a) to (2c) are used to branch the 10Gbps client signals (1a) to (1c) processed by the 10Gbps repeater (3a), 40Gbps repeater (3b), and 100Gbps repeater (3c) to the M:N switch (40). The M:N switch (40) selects the client signals to be generated for redundancy from the branched client signals (1a) to (1c) and outputs them to the redundant 100Gbps repeater (50) with a 10Gbps client interface.

Description

Technical Field [0001] This invention relates to wavelength redundancy devices and methods in wavelength division multiplexing optical transmission systems. Background Technology [0002] In achieving high-capacity optical transmission, simply increasing the wavelength division multiplexing (WDM) number and laying new fiber optic networks cannot fully meet the demand. In recent years, the transmission speed of a single transponder has rapidly increased from 10Gbps to 40Gbps, 100Gbps, and 400Gbps. As a method to increase the communication capacity in submarine cables, the following upgrade approach is generally adopted: effectively utilizing existing optical fibers; for a portion of the currently used 10Gbps bandwidth, migrating and utilizing new 40Gbps or 100Gbps bandwidth to free it up, or effectively utilizing previously unused bandwidth. [0003] Influenced by this technological trend, wavelength division multiplexing optical transmission systems with transponders having d...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04B10/032H04J14/00H04J14/02H04L29/14H04L69/40
CPCH04J14/0257H04J14/0294H04J14/0297H04Q11/0066H04Q2011/0016H04Q2011/0081
OwnerMITSUBISHI ELECTRIC CORP