gigalight coherent transmission system —the edge tool for metro/long-凯发k8国际手机app下载

with the acceleration of network cloudification, business traffic is rapidly concentrated in data centers, and the scale of global data centers has expanded dramatically. at present, the data center is gradually expanding to the edge of the network, and the coverage area is more extensive. for these data centers to work together, they need to exchange information with each other. this creates the need for interconnection and the dci network (data center interconnect). currently, metro dci and long-haul dci are the two most important dci application scenarios, among which, the metro dci market is developing particularly rapidly.

gigalight coherent transmission system —the edge tool for metro/long-haul dci插图

main challenges

gigalight’s economical simplest coherent solution

gigalight’s fibre channel solutions for data center san

gigalight coherent transmission system —the edge tool for metro/long-haul dci插图1

technical solution: the client side adopts 100g qsfp28 sr4/lr4 optical modules, and the otu unit realizes the conversion of one 100ge service into one 100g coherent optical signal or two 100ge services into one 200g coherent optical signal.

2×100g muxponder client side is configured with 100g qsfp28 sr4/lr4 optical module for docking , and the line side is configured with 100/200g cfp2 dco optical module for docking with awg.

configuring the edfa to improve the transmission power and the system receiving sensitivity,and configuring voa for link optical power adaptive adjustment, also configuring olp for fiber automatic switching protection.

technology highlights

what we provide is a platform-based system, which can be configured with different functional boards according to various needs to realize the individual needs of customers.


high integration

electrical and optical layer functions are highly integrated in 1ru

high capacity

400g/1ru coherent transmission capacity, supporting 100g/200g cfp2 coherent module

multi-service

100ge/otu4 optional

ultra-long transmission

support 150km single span, multi-level sites can reach 2000kmv

smart panel

no pc required, offline using, can view the key monitoring information of business boards.

smart frame

1u, 2u, 4u optional

intelligent network management

support web/snmp/cli network management

gigalight coherent transmission system —the edge tool for metro/long-haul dci插图11

gigalight’s 100g cfp2 dco has excellent osnr performance. in different fec configuration modes, the altered caused by the osnr tolerance of the 100g coherent system directly determines the number of edfas that can be cascaded, also limits the farthest transmission distance of the coherent system.

100g cfp2 dco rx  osnr tolerance (db)osnr(final)osnr marginrecommended number edfa cascadesreach(km)
zr 176 span, 19.3db2.3db6>600
mr 15.510 span, 17db1.5db10>1000
lh 1320 span, 14db1db20>2000
*in the project, an edfa span is usually 100km, and the insertion loss of each span is about 25db.

technical specifications

number of service slots 1u piece 4
2u 8
4u 16
size of base unit 1u mm 482.6w×300d×44.5h (including mounting brackets)
2u 482.6w×300d×86h (including mounting brackets)
4u 482.6w×300d×176h (including mounting brackets)
power comsumption 1u w <50(fully equipped)
2u <100(fully equipped)
4u <200(fully equipped)
gigalight coherent transmission system —the edge tool for metro/long-haul dci插图12
gigalight coherent transmission system —the edge tool for metro/long-haul dci插图13

supports converting two 100ge optical signals into one 200g coherent optical signal or converting one 100ge optical signal into one 100g coherent optical signal.

awg cardawg card: support 40ch dwdm wavelength
customizable dwdm 50ghz 96 wave, using independent 1u rack.
operating wavelength range: 1528~1564nm
35db wide input range
adjustable gain
output power ≤23dbm
olp cardsupport 1 1/1:1 link protection
support 1 1 wavelength protection, the minimum switching time can be <10ms
voa cardsupport 0~15db light attenuation automatic adjustment or remote manual adjustment
adjustment accuracy 0.1db.
opm cardsupport the monitor of dwdm wavelength, power, signal-to-noise ratio.
otdr cardsupport the location of fiber link length, loss, break point measurement and break point.
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