Nokia's PSE-3 chipset leverages probabilistic constellation shaping

Nokia unveiled its Photonic Service Engine 3 chipset featuring probabilistic constellation shaping (PCS) that pushes fiber-optic performance close to the Shannon limit to fully exploit channel capacity. PCS is a new modulation technique pioneered by Nokia Bell Labs that the company says enables maximum capacity over any distance and on any fiber - from metro to subsea - increasing capacity up to 65% over currently deployed networks while reducing...

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NeoPhotonics shows 64 GBaud for 600G and 1.2T coherent transport

NeoPhotonics is currently shipping a suite of 64 GBaud optical components for coherent systems operating at 600G and 1.2T.  64 GBaud components double the symbol rate over standard 100G (32 GBaud) coherent systems. The NeoPhotonics suite use three optical components to enable single channel 600G or dual channel 1.2T transmission: 64 GBaud CDM -- NeoPhotonics 64 GBaud, polarization multiplexed, quadrature coherent driver modulator (CDM)...

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Oclaro ships 100G PAM4 EML laser chips

Oclaro announced general market availability of its 100G PAM4 EA-DFB EML chips for next-generation, transceiver applications, enabling 100G per wavelength and paving the way for 200 Gbps and 400 Gbps in data center networks. The new 100G PAM4 EML laser chips operating at 53 Gbaud with up to 40Ghz bandwidth (@ 20°C) and 6dB extinction ratio (@70°C). Oclaro also announced additional wafer fab capacity upgrades for DML and EML laser production, providing...

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Broadcom delivers 400G Reverse Gearbox

Broadcom announced commercial availability of a 400G gearbox device for hyperscale data center and cloud applications. The new BCM81724 device, which is Broadcom’s 4th generation gearbox, is an 8x56-Gbps PAM-4 to 16x25-Gbps NRZ forward and reverse gearbox, designed to enable next-generation high-performance switches with PAM-4 I/Os to connect to the large existing ecosystem of switches and plug-in modules with NRZ interface. It can also be configured...

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Mellanox debuts its Onyx Ethernet Network Operating System

Mellanox Technologies released a next-generation Ethernet network operating system for its Mellanox Spectrum Open Ethernet switches. Mellanox Onyx OS provides a rich Layer-3 feature set with built-in dynamic routing protocols such as BGP/OSFP. It features a robust control plane and 64-way ECMP support, which Mellanox says can be used to construct large, scale-out L3 fabrics for data centers. Additional capabilities include: support for standard...

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Ciena posts quarterly revenue of $646.1 million, up 4% yoy

Ciena reported revenue of $646.1 million for the first quarter of its fiscal 2018, up 4% as compared to $621.5 million for the fiscal first quarter 2017. Ciena's fiscal first quarter 2018 GAAP results include a non-cash $476.9 million charge related to the enactment of the Tax Cuts and Jobs Act. As a result, Ciena's GAAP net loss for the fiscal first quarter 2018 was $(473.4) million, or $(3.29) per diluted common share, which compares to a GAAP...

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Oclaro samples 1310nm DFB-MZ PICs for 100G/400G PAM4

Oclaro announced sampling 1310nm photonic integrated circuits (PICs) that integrate a DFB laser with a Mach Zehnder modulator for intra-data center applications using CWDM wavelengths.  The 1310nm DFB-MZ PIC, which leverages Oclaro's expertise in 1310 DFB lasers and its Indium-Phosphide high-bandwidth modulator technology, is aimed at shorter-reach applications such as higher-speed connectivity across data center campuses. "The need for ever-increasing...

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T-Mobile U.S. joins Green Power Partnership

T-Mobile has joined the Green Power Partnership – a collective of companies leading the way in renewable energy. "Moving to renewable energy is the right thing to do, and it’s smart business. We’ll continue to be a brand that makes our customers proud,” said John Legere, president and CEO at T-Mobile. “Meanwhile, AT&T just scored a C– and Verizon flat-out FLUNKED OUT according to Green America’s clean energy scorecard. C’mon Backward Blue and...

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Eutelsat seeks new opportunities - part 2

In the first half of this article, we looked at the recent financial performance of Eutelsat, the Paris-based satellite operator known for its pioneering video distribution services and global reach. Currently, the Eutelsat fleet of satellites is carrying 6,810 TV channels, of which 1,275 channels are HD – a penetration rate of only 19%, which seems low in this era when 4K television screens are now widely available in many markets at declining prices. As...

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