DE102014111198A1 - Device for transmitting data - Google Patents

Abstract

The present invention relates to a device for transmitting data comprising at least two patch panels with connector couplings, which on the one hand serve to receive patch cables and on the other hand serve to receive trunk cables for connecting the patch panels to one another, the connectors of the individual patch panels having an identical arrangement and configuration ,

Description

The present invention relates to a device for transmitting data.

For data transmission with higher data transmission data over longer distances, it is preferable to use glass fibers today. As a rule, these have pre-assembled plugs from the factory or fusible fibers (pigtails) assembled on one side with plug-in connections are connected on site by means of fusion splicing. The fiber optic lines today have at least 2 to 192 optical fibers.

The pre-assembled solution is mostly used for vertical cabling of buildings or for rack cabling in the data center. Alternatively, plant cabling is common in the industry.

The splice solution is used regularly if it is not possible to determine the exact length in the field, if the distances are very long and if the cable lengths for pre-assembled cables are too narrow. This is z. B. in building-to-building connections (so-called Kampus cabling). The splice solution has the disadvantage that it is more expensive to install in the field and requires more space in the patch panel because the fiber optic splices must be housed in special splice cassettes for protection.

In practice, for example, the patch cords and the links are crossed by default. Three crossed cables put together give a crossed link. The transmission channel goes to the reception channel and vice versa. But if the distance is 1: 1 currently occupied, a crossed and a straight patch cord must be used. This can lead to complications if several distances z. B. in data centers must be connected to each other (so-called Durchpatchen).

In the meantime data centers are starting to use modular prefabricated systems. These are modules that have conventional duplex connectors on the front and so-called "array connectors" on the back. B. MPO / MTP connectors have.

If the fibers are just connected to each other in MPO connectors, it is the so-called type A occupancy (fiber 1 to 1, ... fiber 12 to fiber 12). Method A accordingly has the following appearance:
Duplex patch cable 1: 1 → module 1: 1 → MPO connector type A → MPO type A cable → MPO connector A → module 1: 1 → duplex patch cable crossed. This system has the disadvantage that differently assigned patch cables are used for duplex and parallel transmission.

For the parallel transmission, the prerequisite is that the transmitter (TX) meets the receiver (RX). This is achieved by using the so-called assignment type B. Ie. on one side of the cable, the fibers in the connector are turned through 180 ° (fiber goes on fiber 12, fiber 2 goes on fiber 11, ... fiber 12 on fiber 1). For parallel transmission, the type B assignment is optimal. Because here you can effortlessly work with a uniform occupancy. Just make sure that in the link all elements, cables and connectors are of type B. The coupling elements are available in type B (key up / key up) and type A (key up / key down). These coupling elements hold only the two mated MPO connectors together and have no glass fibers. The coding nose (key) of the MPO connector achieves a torsion-proof plug connection.

The method B thus has the following appearance: duplex patch cable crossed → module 1: 1 → MPO connector type B → MPO cable type B → MPO connector type B → module crossed → duplex patch cable crossed.

This system has the advantage that uniformly occupied patch cables are used for duplex and parallel transmission. The disadvantage, however, that differently populated modules are needed

If the fibers are rotated in pairs, it is the so-called type C occupancy (fiber 1 on fiber 2, fiber 2 on fiber 1, fiber 3 on fiber 4, ... fiber 12 on fiber 11). Method C looks like this:
Duplex patch cable crossed → 1: 1 → MPO connector type A → MPO cable type C → MPO connector A → module 1: 1 → duplex patch cable crossed.

This system has the advantage that uniformly occupied patch cords and modules can be used for duplex transmissions. The disadvantage is that differently assigned patch cables are used for the parallel transmission.

As a result, this means that all three methods have the disadvantage that one must use different patch cables or modules for duplex and parallel transmission.

Connector solutions for fiber optic cables in various designs are from the WO 2006/07/254 A1 . WO 2013/052748 A2 . WO 2014/078261 A1 . EP 2259118 A1 , 10 92010/0092161 A1, US 2010/0092171 A1 . US 2010/322562 A1 known.

After US Pat. No. 6,869,222 B1 It is possible to work with unified modules in conjunction with a Type B MPO trunk cable. With this method, a smooth migration from duplex to parallel transmission is possible and only uniform patch cords are needed at both ends.

The present invention has accordingly set itself the task, starting from the prior art, to make handling even easier and safer. Simpler means that uniquely assigned link components can be used and, in contrast to the three officially standardized methods, a simple migration to higher transmission rates becomes possible. This also means investment security. In addition, the planning of networks becomes easier.

This object is achieved by a device for transmitting data comprising at least two patch panels with connector couplings, which on the one hand serve to receive patch cables and on the other hand for receiving trunk cables for connecting the distribution panels with each other, the connectors of the individual distribution panels an identical arrangement and design exhibit.

Connectors are understood to mean the connections of two or more plugs via coupling elements. Connectors are special devices for the detachable connection of optical fibers or fiber optic cables. Fiber optic cables can be connected with each other or with other components. In communications engineering, these are devices such as transmitters, receivers or amplifiers, and in metrology, spectroscopy or medical technology these are, for example, laser devices, light sensors or radiation detectors.

The majority of plug-in connections used today are male-female connectors. The connectors used must have the lowest possible signal attenuation and a high return loss, as well as a high reproducibility or maintenance of these parameters over several hundred connection cycles.

According to the invention, glass fibers are preferably used as conductors. The system according to the invention with at least two distributor fields, between which the optical fiber link is located, constitutes a so-called link. For such a link, a pair of optical fibers is generally required. One fiber is used for transmission and the other for receiving data (so-called transmitter (TX) and receiver (RX)). This implies that an intersection of the fibers is made in the link so that each of the transmitters (TX) is connected to the receiver (RX). The solution according to the invention relates here to the transmission with multimode and singlemode fibers.

The link according to the invention preferably has a permanently installed wiring which has a distribution field on both sides. Between the distribution panels is the fiber optic link, which has connectors on both sides, which can be accommodated by the other distribution panel arranged connectors. On the side of the distributors separate therefrom are the coupling elements. These serve the connection by means of patch cable.

The invention preferably uses MPO or MTP connectors. Preferably, MPO connectors are used. These preferably have 12 and 24 glass fibers. This has the advantage that very high numbers of fibers can be arranged in a very small space. As a result, a large number of fibers can be connected with a plug-in operation. This results in a considerable time savings and also a security element. Such MPO connectors are suitable for higher transmission rates, eg. Eg 40 to 100 Gigabit Ethernet (GbE). For the 40 GbE over Multimode a cable binding of 4 pairs of glass fibers is made. For the 100 GbE, a bundling of 10 fiber pairs is made. As a result, the advantage of the rear connector system of the present invention is that the fiber optic links already provide a simple migration option to higher data rates.

For the invention, it is essential that the MPO connectors in both distribution fields are arranged and configured to be identical. Ie. According to the invention, the distributor fields have front side 24 × individual fiber connectors (preferably but not necessarily type LC) and on the back 2 × MPO connectors.

Thus, according to the invention, the MPO connectors are located on one side of the patch panel while the mating ports for the single-fiber connectors (eg, LC Duplex) are located on another side of the patch panel.

The distributor field therefore preferably has side walls. Here, the MPO connectors and the duplex connector ports are preferably arranged on the opposite sides. In a particularly advantageous manner, the distribution panel is designed so that it represents a closed box, which is preferably designed rectangular. In this box, the cable connections between MPO connector and duplex connector are hardwired. These are connectors that are coupled by means of couplings. Such a connector thus consists of 2 connectors and a coupling.

In effect, you have the MPO connector on one side and the LC duplex connectors on the other side of the patch panel. The advantage is that LC Duplex and MPO connectors are therefore on separate sides. In effect, a simplified handling is possible.

In the following the subject of the invention will be explained in more detail with reference to the figures. In these, the numbers 1 to 24 refer to the respective MPO connectors. TX and RX (X = 1 to 12) denote the respective ports.

In the 1 the locking lugs are arranged opposite. On the back are 2 × MPO. All Series 1 fibers face MPO1 and all Series 2 fibers are MPO2. The two MPO's are identically occupied. The intersection is achieved by unilaterally repositioning the MPO and turning the module. Disadvantage: The associated LC duplex ports are in a row but the ports are arranged mirror-inverted.

The allocation items are shown in the following table.

Table of occupancy to Fig. 1

allocation table port Module position MPO 1 position MPO 2 position 1T 1 12 1R 2 11 2T 3 10 2R 4 9 3T 5 8th 3R 6 7 4T 7 6 4R 8th 5 5T 9 4 5R 10 3 6T 11 2 6R 12 1 7T 13 12 7R 14 11 8T 15 10 8R 16 9 9T 17 8th 9R 18 7 10T 19 6 10R 20 5 11T 21 4 11R 22 3 12T 23 2 12R 24 1

In the 2 the locking lugs are arranged opposite. On the back are 2 × MPO. All Series 1 fibers face MPO1 and all Series 2 fibers are MPO2. The module is equipped with two different assignments. MPO1 is provided with twisted pair fibers and the MPO2 is 1: 1 occupied. The intersection is achieved by unilaterally repositioning the MPO and turning the module. Advantage: The associated LC Duplex ports are in a row and are not mirrored.

The allocation items are shown in the following tables.

Table of occupancy to Fig. 2

allocation table port Module position MPO 1 position MPO 2 position 1T 1 11 1R 2 12 2T 3 9 2R 4 10 3T 5 7 3R 6 8th 4T 7 5 4R 8th 6 5T 9 3 5R 10 4 6T 11 1 6R 12 2 7T 13 1 7R 14 2 8T 15 3 8R 16 4 9T 17 5 9R 18 6 10T 19 7 10R 20 8th 11T 21 9 11R 22 10 12T 23 11 12R 24 12

In the 3 the locking lugs are arranged opposite. On the back are 2 × MPO. The transmitters (TX) of both rows at the front go to MPO 2 and the receivers (RX) of both rows go to MPO 1. The crossing is achieved by reversing the two MPOs on one side. The advantage of this system is that the LC duplex ports on both link pages are in two rows and are not mirrored. There is no need to rotate a module. The allocation items are shown in the following tables.

Table of occupancy to Fig. 3

allocation table port Module position MPO 1 position MPO 2 position 1T 1 12 1R 2 1 2T 3 11 2R 4 2 3T 5 10 3R 6 3 4T 7 9 4R 8th 4 5T 9 8th 5R 10 5 6T 11 7 6R 12 6 7T 13 6 7R 14 7 8T 15 5 8R 16 8th 9T 17 4 9R 18 9 10T 19 3 10R 20 10 11T 21 2 11R 22 11 12T 23 1 12R 24 12

In 4 are front side with 2 × rows 6 × 2 LC duplex available. The locking lugs are arranged in one direction. On the back there are 2 × MPO connectors. The transmitters (TX) of both rows go to MPO 2 and the receivers (RX) of both rows go to MPO 1. The crossing is achieved by unilateral switching of the two MPOs. The advantage of this system is that the associated LC duplex ports are in a row and are not mirrored. There is no need to rotate a module. The occupancy position is shown in the following table:

Table of occupancy to Fig. 4

allocation table port Module position MPO 1 position MPO 2 position 1T 1 12 1R 2 1 2T 3 11 2R 4 2 3T 5 10 3R 6 3 4T 7 9 4R 8th 4 5T 9 8th 5R 10 5 6T 11 7 6R 12 6 7T 13 12 7R 14 1 8T 15 11 8R 16 2 9T 17 10 9R 18 3 10T 19 9 10R 20 4 11T 21 8th 11R 22 5 12T 23 7 12R 24 6

In 5 the arrangement is similar. Only the locking lugs for plug coding are here in one direction, but not laterally but oriented upwards. The occupancy position is shown in the following table:

Table of occupancy to Fig. 5

allocation table port Module position MPO 1 position MPO 2 position 1T 1 1 1R 2 2 2T 3 3 2R 4 4 3T 5 5 3R 6 6 4T 7 7 4R 8th 8th 5T 9 9 5R 10 10 6T 11 11 6R 12 12 7T 13 12 7R 14 11 8T 15 10 8R 16 9 9T 17 8th 9R 18 7 10T 19 6 10R 20 5 11T 21 4 11R 22 3 12T 23 2 12R 24 1

The variants listed above are also possible with the MPO 24 fibers. This plug has two rows of 12 fibers each. For clarification is in 6 the occupancy 4 schematically illustrated with the MPO 24. The cross reference table for the MPO24 makes the facts clear.

5 shows the fiber position numbers of the MPO connector in the front view. 5a shows here a view for MP 12 fibers. In contrast, in 5b the view for MPO 24 fibers is shown.

The cross reference for MP 12-MP24 fibers is shown in the following table. Cross reference MPO 12-MPO 24 MPO 24 MPO 1 position MPO 2 position TX 1 1 TX 2 2 TX 3 3 TX 4 4 TX 5 5 TX 6 6 TX 7 7 TX 8 8th TX 9 9 TX 10 10 TX 11 11 TX 12 12 RX 1 1 RX 2 2 RX 3 3 RX 4 4 RX 5 5 RX 6 6 RX 7 7 RX 8 8th RX 9 9 RX 10 10 RX 11 11 RX 12 12

6 shows an assignment with the 24 fiber MPO connector.

Advantage: It is not necessary to rearrange MPO connectors on the back and it eliminates the rotation of the module. With this assignment, the 24 FASER MPO offers the most comprehensive migration options. Regardless of the number of fibers, one generally has a greatly simplified handling. It is generally possible to use uniformly assigned cables and components before and after the migration.

The assignment of the trunk cables is shown in the following table.

Assignment trunk cable to Fig. 6

Trunk

The assignment items for the result from the following table:

Table of occupancy to Fig. 6

allocation table port Module position MPO 24 TX RX 1T 1 12 1R 2 1 2T 3 11 2R 4 2 3T 5 10 3R 6 3 4T 7 9 4R 8th 4 5T 9 8th 5R 10 5 6T 11 7 6R 12 6 7T 13 12 7R 14 1 8T 15 11 8R 16 2 9T 17 10 9R 18 3 10T 19 9 10R 20 4 11T 21 8th 11R 22 5 12T 23 7 12R 24 6

The figure shows the connector coding for MPO 24. Like already from the 5b can be seen, in contrast to MPO 12 here two rows of 12 positions are arranged one above the other.

LIST OF REFERENCE NUMBERS

• A

  = Ports

  B

  = Position of MPO connector

  C

  = Coding / latch

  D

  = Adapter

  e

  = Trunk cable

  1-24

  = Fiber position numbers of MPO connectors

  TX

  = Transmitter port

  RX

  = Receiver port

  X

  = 1-12 (= positions of the ports)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2006/07/254 A1 [0014]
• WO 2013/052748 A2 [0014]
• WO 2014/078261 A1 [0014]
• EP 2259118 A1 [0014]
• US 2010/0092171 A1 [0014]
• US 2010/322562 A1 [0014]
• US 686922 B1 [0015]

Claims (9)

Device for transmitting data comprising at least two distribution fields with connector couplings, which on the one hand serve to receive patch cables and on the other hand serve to receive trunk cables for connecting the distributor fields to one another, the connectors of the individual distributor fields having an identical arrangement and configuration. Apparatus according to claim 1, characterized in that the lines are glass fibers. Apparatus according to claim 1 or 2, characterized in that the distribution panels have side walls in which the connectors are arranged. Device according to one of the preceding claims, characterized in that on one side connectors for the purpose of connection of the distributor fields with each other and on another side of the connectors for receiving the patch cord are arranged. Device according to one of the preceding claims, characterized in that the MPO connector is equipped with 12 to 24 glass fibers. Device according to one of the preceding claims, characterized in that duplex connectors are used for the patch cable. Device according to one of the preceding claims, characterized in that the connectors for the connection of the distribution fields with each other and the connectors for the duplex cables are arranged on opposite side walls. Device according to one of the preceding claims, characterized in that the distribution panels represent closed housing. Device according to one of the preceding claims, characterized in that the distributor fields contain permanently installed lines.

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