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Double-fiber duplexing structure active optical cable communication architecture

A technology of optical cable and dual-core optical fiber, which is applied in the field of optical communication, can solve the problems of inability to realize two-way data communication and 4-way signal data communication, and achieve the effect of reducing costs and reducing the number of components

Inactive Publication Date: 2015-09-02
SHANGHAI NET MILES TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technologies are all 8-fiber duplex structures, that is, 8 fibers are used to realize 4-way two-way data communication, but two-way data communication in two fibers cannot be realized.
And this technology uses 4 VCSELs and 4 PDs to realize the data communication of 4 signals in single-end, and it is impossible to realize the data communication of 4 signals with the same total rate obtained by 1 VCSEL and 1 PD.

Method used

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  • Double-fiber duplexing structure active optical cable communication architecture
  • Double-fiber duplexing structure active optical cable communication architecture
  • Double-fiber duplexing structure active optical cable communication architecture

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Embodiment 1

[0029] Such as figure 1 with figure 2 As shown, this embodiment corresponds to the rate required by Infiniband, that is, the speed of a single link is 500 MB / s, and the speed of four links is 2 GB / s.

[0030] This embodiment includes: two multimode optical fibers

[0031] The multimode optical fiber has a core diameter of 62.5 microns, a cladding diameter of 125 microns, two optical fibers side by side, and a core spacing of 125 microns;

[0032] Such as image 3 As shown, the VCSEL with a bandwidth of 50 GHz is assembled side by side with a PD with a bandwidth of 50 GHz, and the bandwidth described in this section is a 3dB bandwidth. The center distance between VCSEL and PD is 125 microns, the size of VCSEL is 125*125 microns, and the size of PD is 125*125 microns;

[0033] Such as Figure 4 As shown, it is the driving circuit described above, which converts 4 channels of 25.78Gbps NRZ signals into 1 channel of 51.56Gbaud PAM4 signals, and the total rate reaches 103.12G...

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Abstract

Provided is a double-fiber duplexing structure active optical cable communication architecture including two transmission links that are in the same structure and are oppositely arranged, each link includes a drive circuit, a VCSEL, a transmission fiber, a PD, and a receiving circuit that are successively connected, the transmission fibers of the two transmission links are realized by a double-core optical fiber, and the two ends of the double-core optical fiber are respectively provided with a signal emitting part and a signal receiving part. The communication architecture can greatly reduce the number of parallelly connected fibers to improve the technology consistency; and meanwhile, the communication architecture can directly reduce the consumption quantity of components, and can effectively reduce the cost while improving the yield rate.

Description

technical field [0001] The present invention relates to a transmission medium in the field of optical communication, specifically a dual-fiber duplex structure, 100G high-speed, QSFP+ interface (QSFP+, Quad Small Form-factor Pluggable Plus) active optical cable communication architecture. Background technique [0002] Active Optical Cable (Active Optical Cable: AOC) is a newly developed state-of-the-art optoelectronic interconnection technology. AOC has incomparable advantages of traditional electrical interconnection technology in terms of high speed, low power consumption, long distance, high density, no electromagnetic interference, and short delay. Almost all electrical interconnection interfaces can be converted to optical interconnection, so that low-power, high-speed, long-distance connection of data communication can be realized in the way of AOC. In this regard, AOCs for enterprise-level applications include 10G SFP, 16G Fibrechannel, 40G QSFP, 48G SAS, 56G QSFP+, ...

Claims

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Application Information

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IPC IPC(8): H04B10/25
Inventor 何祖源杜江兵马麟
Owner SHANGHAI NET MILES TECH
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