High-density and highly integrated otn wavelength-division transmission system

High-density and highly integrated OTN Wavelength-Division transmission System

This wave division multiplexing technology in the heyday, a variety of new technologies emerge. The goal is the same, that is to meet the network era of the operators. Long long ago, can only use CWDM coarse wave points, channel number is not enough to say, transmission distance is also very limited, line and equipment attenuation calculation,10G no relay transmission Kilometer is already a bottleneck. This technical background is clearly not enough to meet the needs of operators.

Fortunately, the technology is progressing,DWDM Dense Wave division, the technology in the CWDM channel number and transmission distance of two short boards have a qualitative leap.

0.8nm , in the dense wavelength band can allow 48 wavelength. This number means that each wavelength transmits 10g capacity, 48 wave can transmit 480g

Secondly, the transmission distance,CWDM Coarse wave is considered a short distance transmission, the reason is two points. First: Its wavelength range is 1270~1610, the band is too large, no one device can simultaneously amplify the entire band of optical power, resulting in distance transmission is not far. This time, you may think, since then, I can also re-investigate in the relay station, with the oeo signal regeneration relay. Then continue the transmission, reaching the desired distance. That's what I want to share with you 2nd. Because the number of channels is relatively small, the distance between the single transmission is only dozens of km, imagine, if a carrier needs to bring 160G of data resources to Another place of three kilometers, This requires six or seven relay stations in the middle of the regeneration relay, the cost is huge, and the maximum capacity is only 160G, quite not cost-effective.

Since the analysis of the reason, let's seeDWDMdense wave points, can you transfer farther distances? All knowDWDMthe wavelength range of dense wave points is1525~1565, whileEDFAErbium-doped fiber amplifiers amplify the range, which means that only a singleEDFA, you can magnify the wavelength of the entire band, if the full package is480Gcapacity, you just need a singleEDFAand its amplification power can reach30dB. If the fiber attenuation follows0.25db/kmcalculation, a singleEDFAyou can relay it .80KM. In this calculation, long-distance relay costs are comparedCWDMgreatly reduced.

The DWDM Dense wave sub-scheme is chosen for long-distance and large-capacity synthesis .

2u+1u platform slowly upgraded to 6u platform, i.e. and otn is a platform, which is known as a WDM-based otn optical transmission platform. Shenzhen Optical Road Science and technology otn optical transmission platform is highly dense and highly concentrated, Various types of business cards can be centrally mixed in a 6u rack above. More managed single card to manage the business card above the rack, can see the real-time data of each business card.

Let's take a look at Shenzhen Optical Road technology OTN High-density high-concentration application platform.

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,otn platform can be point-to-point or ring-network transmission. The capacity is based on otn What kind of investigate card is on the device, the maximum can be achieved single board 40 wave investigate combined wave, business card can be the largest single board Span style= "FONT-FAMILY:CALIBRI;" >8 road single fiber 10g edfa fiber amplifier veneer. There are also olp FEC 1+1

Document Source: Shenzhen Optical Road Technology

Editor: Zhou Danyang

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QQ :2853921097

High-density and highly integrated otn wavelength-division transmission system