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news digest ♦ Telecoms


generation and distribution applications. Featuring a compact design using an Avago Versatile Link duplex connector, the transceiver reduces board footprint.


packaged in an optical subassembly that couples the optical power efficiently from POF fibre to the receiving PIN.


With link lengths up to 50m POF (NA0.5) or 70m POF (NA0.3), the module is lead-free and RoHS- compliant and has LVPECL signal detect output.


The AFBR-5972Z Fast Ethernet transceiver is priced at $24.18 each in 100 piece quantities. Samples and production quantities are available now through the Avago direct sales channel and via worldwide distribution partners.


Infinera PICs speed up optical networks in Africa


AFBR-5972Z Fast Ethernet transceiver


An extension of the Versatile Link connector series, the AFBR-5972Z transceiver eliminates the electromagnetic interference, crosstalk, and electrical ground problems that are common with copper wire solutions, while also providing easier, more flexible installation. The transceiver’s new AFBR-4526Z duplex connector is similar in size to electrical RJ-45 sockets and is compatible with existing simplex Versatile Link connectors.


In addition to the smaller size, Avago says the transceiver is more cost-efficient than comparable PROFINET industrial Ethernet standard connector solutions. Offering robust operation in the –40° to +85° C extended industrial temperature range, the device is suitable for industrial applications and supports various Ethernet Fieldbus protocols and is compatible with quasi-industry standard IEEE 802.3 100BASE-FX.


The AFBR-5972Z device’s transmitter is based on a high-power, 650-nm LED with an integrated driver that operates at 3.3V. The transmitter receives a LVPECL/LVDS electrical input and converts it into a modulated current, driving the LED. The LVPECL digital interface enables a direct connection to Ethernet PHY ICs. The high-bandwidth receiver contains a PIN photodiode. The PIN photodiode is


94 www.compoundsemiconductor.net August/September 2011


SEACOM, a leading pan-African telecommunications provider, has used Infinera’s indium phosphide PICs to achieve what both firms believe is the first ever 500Gb/s successful trial in Africa.


Infinera and SEACOM have successfully completed a trial of five 100 Gigabit per second (100Gb/s) coherent optical signals transmitted over 1732 km in Africa.


Believed to be a first of its kind in Africa, the 500Gb/s trial ran over and was looped back across SEACOM’s newly built 930 km Dark Fibre Africa fibre route which links the SEACOM Mtunzini cable landing station in KwaZulu Natal to the Teraco data centre in Johannesburg.


The live demonstration was witnessed by members of Africa’s scientific, research and development community at Teraco’s data centre in Johannesburg. The trial used Infinera’s 500Gb/s InP based Photonic Integrated Circuits (PICs), each of which integrates five 100Gb/s coherent channels onto a single chip.


The PICs were used for both transmitting and receiving the five 100Gb/s signals during the trial, the first time the PICs have been used to transmit and provide real time coherent processing for all 500Gb/s simultaneously on a production network. The trial also demonstrated Infinera’s FlexCoherent functionality by switching between QPSK and BPSK modulation.


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