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Entries in 400 Gigabit (18)

Tuesday
Nov222016

Ciena brings data analytics to optical networking 

  • Ciena's WaveLogic Ai coherent DSP-ASIC makes real-time measurements, enabling operators to analyse and adapt their networks.     
  • The DSP-ASIC supports 100-gigabit to 400-gigabit wavelengths in 50-gigabit increments. 
  • The WaveLogic Ai will be used in Ciena’s systems from 2Q 2017.  

Ciena has unveiled its latest generation coherent DSP-ASIC. The device, dubbed WaveLogic Ai, follows Ciena’s WaveLogic 3 family of coherent chips which was first announced in 2012. The Ai naming scheme reflects the company's belief that its latest chipset represents a significant advancement in coherent DSP-ASIC functionality.  

Helen XenosThe WaveLogic Ai is Ciena's first DSP-ASIC to support two baud rates, 35 gigabaud for fixed-grid optical networks and 56 gigabaud for flexible-grid ones. The design also uses advanced modulation schemes to optimise the data transmission over a given link.

Perhaps the most significant development, however, is the real-time network monitoring offered by the coherent DSP-ASIC. The data will allow operators to fine-tune transmissions to adapt to changing networking conditions. 

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Wednesday
Jun082016

Nokia’s PSE-2s delivers 400 gigabit on a wavelength

Nokia has unveiled what it claims is the first commercially announced coherent transport system to deliver 400 gigabits of data on a single wavelength. Using multiple 400-gigabit wavelengths across the C-band, 35 terabits of data can be transmitted.

Four hundred gigabit transmission over a single carrier is enabled using Nokia’s second-generation programmable Photonic Service Engine coherent processor, the PSE2, part of several upgrades to Nokia's flagship PSS 1830 family of packet-optical transport platforms.

Kyle Hollasch“One thing that is clear is that performance will have a key role to play in optics for a long time to come, including distance, capacity per fiber, and density,” says Sterling Perrin, senior analyst at Heavy Reading.

This limits the appeal of the so-called “white box” trend for many applications in optics, he says: “We will continue to see proprietary advances that boost performance in specific ways and which gain market traction with operators as a result”.

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Friday
Apr292016

NeoPhotonics showcases a CFP2-ACO roadmap to 400G

NeoPhotonics has begun sampling its CFP2-ACO, a pluggable module for metro and long-haul optical transport. 

The company demonstrated the CFP2-ACO module transmitting at 100 gigabit using polarisation multiplexed, quadrature phase-shift keying (PM-QPSK) modulation at the recent OFC show. The line-side module is capable of transmitting over 1,000km and also supports PM-16QAM that doubles capacity over metro network distances.

 

Ferris LipscombThe CFP2-ACO is a Class 3 design: the control electronics for the modulator and laser reside on the board, alongside the coherent DSP-ASIC chip.

At OFC, NeoPhotonics also demonstrated single-wavelength 400-gigabit transmission using more advanced modulation and a higher symbol rate, and a short-reach 100-gigabit link for inside the data centre using 4-level pulse-amplitude modulation (PAM4) signalling. 

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Wednesday
Nov252015

COBO looks inside and beyond the data centre 

The Consortium of On-Board Optics is working on 400 gigabit optics for the data centre and also for longer-distance links. COBO is a Microsoft-led initiative tasked with standardising a form factor for embedded optics.

Established in March 2015, the consortium already has over 50 members and expects to have early specifications next year and first hardware by late 2017.

 

Brad Booth

Brad Booth, the chair of COBO and principal architect for Microsoft’s Azure Global Networking Services, says Microsoft plans to deploy 100 gigabit in its data centres next year and that when the company started looking at 400 gigabit, it became concerned about the size of the proposed pluggable modules, and the interface speeds needed between the switch silicon and the pluggable module.

“What jumped out at us is that we might be running into an issue here,” says Booth.

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Wednesday
Oct142015

ECOC 2015 Review - Part 1

Part 1: Line side announcements

  • Several companies announced components for 400 gigabit optical transmission
  • NEL announced a 200 gigabit coherent DSP-ASIC
  • Lumentum ramps production of its ROADM blades while extending the operating temperature of its tunable SFP+

 

400 gigabit

Oclaro, Teraxion and NeoPhotonics detailed their latest optical components for 400 gigabit optical transmission using coherent detection.

Oclaro and Teraxion announced 400 gigabit modulators for line-side transmission; Oclaro’s based on lithium niobate and Teraxion’s an indium phosphide one.

NeoPhotonics outlined other components that will be required for higher-speed transmission: indium phosphide-based waveguide photo-detectors for coherent receivers, and ultra-narrow line-width lasers suited for higher order modulation schemes such as dual-polarisation 16-quadrature amplitude modulation (DP-16-QAM) and DP-64-QAM.

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Wednesday
May202015

OFC 2015 digest: Part 2 

The second part of the survey of developments at the OFC 2015 show held recently in Los Angeles.   
 
Part 2: Client-side component and module developments   
  • CFP4- and QSFP28-based 100GBASE-LR4 announced
  • First mid-reach optics in the QSFP28
  • SFP extended to 28 Gigabit
  • 400 Gig precursors using DMT and PAM-4 modulations 
  • VCSEL roadmap promises higher speeds and greater reach

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Tuesday
Mar312015

Acacia unveils 400 Gigabit coherent transceiver

  • The AC-400 5x7 inch MSA transceiver is a dual-carrier design
  • Modulation formats supported include PM-QPSK, PM-8-QAM and PM-16-QAM
  • Acacia’s DSP-ASIC is a 1.3 billion transistor dual-core chip 

Acacia Communications has unveiled the industry's first flexible rate transceiver in a 5x7-inch MSA form factor that is capable of up to 400 Gigabit transmission rates. The company made the announcement at the OFC show held in Los Angeles. 

Dubbed the AC-400, the transceiver supports 200, 300 and 400 Gigabit rates and includes two silicon photonics chips, each implementing single-carrier optical transmission, and a coherent DSP-ASIC. Acacia designs its own silicon photonics and DSP-ASIC ICs.

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