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Alarmar y Cable Audio y Electrónico

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Soluciones Empresariales

Matrixlight 10G Optic Fiber Cabling Solution

           

 

With the falling cost of the Ethernet equipment, 10GBase-T has becomes the prevailing trend in the system design. Basically, the data transmission rate for horizontal cabling and backbone bears a ratio of 1:10 to avoid any traffic congestion. Currently, Cat 6 is widely used for the horizontal cabling, which provides 1000Mbps to the desk. To ensure smooth network traffic, 10G fibre optic cable should be used in backbone.

Optic Fibre Cables becomes the best choice because of its compact size, high transmission capacity and bandwidth. Optic Laser is mainly of two categories: One is LED using multimode fibre as the transmission media and another is laser using single mode fibre cable as the transmission media. Single mode cable can certainly fulfill the 10G Ethernet requirements but the cost of laser equipment is extremely high. Traditional multimode fibre cable can support 10G application over a short distance of around 50m and may not be adequate for support the backbone traffic. To support 10G Ethernet application, VCSEL (Vertical cavity surface emitting lasers) was then developed. VCSEL combines the strong characteristics of laser including response time, narrow transmission bandwidth and the special strength of LED such as high coupling efficiency and low equipment cost. Special 50/125um fiber cable is designed to work in harmony with VCSEL equipment at 850nm wavelength for supporting 10Gbps over 300m drive distance and 1000Mbps over 900m drive distance. Relatively speaking, the cost of optimized the 50/125um fiber cable is slightly higher than traditional fiber cable. In June 2002, IEEE approved the new standard for 10G Ethernet. In September 2002, the ISO/IEC 11801 also standardized a new categorization for the multimode fiber cables. Under the new categorization, multimode fiber cables are classified under OM1, OM2 and OM3 category. OM1 refers to the traditional 62.5um fiber cables. OM2 refers to the traditional 50um fibre cables and OM3 refers to the new optimized 50um fiber cables. The bandwidth of traditional 62.5um is only 200Mhz under 850 nm wavelength and 500Mhz under 1300nm wavelength. This bandwidth is far inadequate for supporting 10G Ethernet application. However, with the invention of OM3 fiber cable, 10G Ethernet application can now be fully supported with OM3 fiber cable which can offer 2000Mhz bandwidth at 850nm wavelength

Below is the bandwidth and the maximum transmission distance of different fiber cables for 10G Ethernet application

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fiber Type

Bandwidth 850nm
Mhz*km

Bandwidth
1300nm
Mhz*km

1Gbps Transmission Distance

10Gbps Transmission Distance

Fiber Class

Multimode

 

 

@850nm

@1300nm

@850nm

@1300nm

 

Traditional 62.5/125μm

200

500

275m

550m

33m

300m

OM1

Traditional 50/125μm

400

800

500m

1000m

66m

450m

OM1

Traditional 50/125/62.5μm

500

500

550m

550m

82m

300m

OM2

50/125μm-110

600

1200

750m

2000m

110m

850m

OM2+

50/125μm-150

700

500

750m

550m

150m

300m

OM2

50/125μm-300

1500

500

1000m

550m

300m

300m

OM3

50/125μm-550

3500

500

1000m

550m

550m

550m

N.A

Single Mode

 

 

@1310m

@1550nm

1310/1383/1550nm

 

Traditional 9/125μm

 

 

5000m

 

10000m-40000m

 

 

 

Below are the attenuation and chromatic dispersion values for different fiber types.

 

 

 

 

 

 

 

Traditional Single Mode Fiber

Zero Water Peak Fiber

Non Zero Disperson Shifted Fiber

Long Haul

Metro Area

Nominal Attenuation

Values ( dB/Km )

1310nm

0.33

0.34

N/A

0.35

1383nm

0.40

0.31

0.32

0.32

1550nm

0.19

0.19

0.20

0.20

1625nm

0.21

0.21

0.21

0.21

Nominal Chromatic Disperson Values ( dB/Km )

1310nm

0

0

N/A

- 11.5

1550nm

16.5

16.5

4.5

4.5

1625nm

23

23

10.5

8.5

 

 

In view of emerging 10G Ethernet requirement, Caledonian put forward 10G fiber solution, MATRIXLIGHT system. MATRIXLIGHT is a 10G fiber system offering OM3 50/125 fiber cables and single mode fiber cables in full compliant with IEC 60793-2 and TIA 492AAAC DMD. Working with VCSEL, the OM3 fiber cable can support 10Gbps transmission speed over 300m, complying to ISO/IEC11801-2nd standard. Caledonian OM3 fiber cable can support low cost 10G serial transmission technology. In 10G Base-SR, there are two operating bandwidths. One is the 1500/500 Mhz. km and another is 2000Mhz.km, both supporting 850nm light source, and generally support backbone and fibre to the desk solution. Caledonian OM3 fiber cables works in full harmony with the fiber patch panels and components in order to support the existing network topology and can be deployed in either the backbone or horizontal cabling. Lastly, Caledonian single mode cable features a very low attenuation of 0.7dB/km, which significantly increase the transmission distance from 5 Km supported by 1Gbps to 40 Km supported by 10G.