II-VI shrinks an optical line system into an OSFP module

II-VI has developed an optical line system that fits inside a pluggable module. 

The advent of coherent pluggable modules implementing the 400ZR standard allows switches and routers to be linked across separate data centres. Now, with a pluggable optical line system, a dedicated line-system platform is no longer needed to send the 400ZR signals over a fibre. 

Sanjai ParthasarathiIn turn, the network operating system on the switch manages the optical line system directly such that a separate optical management software layer is no longer needed.

“We have shrunk an entire pizza-box line system into a small pluggable,” says Sanjai Parthasarathi, chief marketing officer at II-VI.

Indeed, one customer refers to the II-VI pluggable product - dubbed the OSFP-LS - as a ‘zero-rack-unit’ platform.

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Adding an extra dimension to ROADM designs

U.K. start-up ROADMap Systems, a developer of wavelength-selective switch technology, has completed a second round of funding. The amount is undisclosed but the start-up is believed to have raised several million dollars to date.

Karl HeeksThe company will use the funding to develop a prototype of its two-dimensional (2D) optical beam-steering technique to integrate 24 wavelength-selective switches (WSSes) within a single platform.

The WSS is a key building block used within reconfigurable optical add-drop multiplexers (ROADMs).

The company’s WSS technology uses liquid crystal on silicon (LCOS) technology, the basis of existing WSS designs from the likes of Finisar and Lumentum. However, the start-up has developed a way to steer beams in 2D whereas current WSSes operate in a single dimension only.

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Ciena goes stackable with 8180 'white box' and 6500 RLS

Ciena has unveiled two products - the 8180 coherent networking platform and the 6500 reconfigurable line system - that target cable and cellular operators that are deploying fibre deep in their networks, closer to subscribers.

The 6500 line system is also aimed at the data centre interconnect market given how the webscale players are experiencing a near-doubling of traffic each year.

Source: Ciena

The cable industry is moving to a distributed access architecture (DAA) that brings fibre closer to the network’s edge and splits part of the functionality of the cable modem termination system (CMTS) - the remote PHY - closer to end users. The cable operators are deploying fibre to boost the data rates they can offer homes and businesses.

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The white box concept gets embraced at the optical layer

Lumentum has unveiled several optical white-box designs. To date the adoption of white boxes - pizza-box sized platforms used in large-scale data centres - has been at the electronic layer, for switching and routing applications.

Brandon Collings

White boxes have arisen to satisfy the data centre operators’ need for simple building-block functions in large number that they can direct themselves.  

“They [data centre operators] started using very simple white boxes - rather simple functionality, much simpler than the large router companies were providing - which they controlled themselves using software-defined networking orchestrators,” says Brandon Collings, CTO of Lumentum. 

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Finisar adds silicon photonics to its technology toolkit

• Finisar revealed its in-house silicon photonics design capability at ECOC
• The company also showed its latest ROADM technologies: a dual wavelength-selective switch and a high-resolution optical channel monitor.
• Also shown was an optical amplifier that spans 400km fibre links 

These two complementary technologies [VCSELs and silicon photonics] work well together as we think about the next-generation Ethernet applications.

Rafik Ward

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ECOC 2013 review - Part 2

The final part of some of the notable product announcements made at the recent European Conference on Optical Communication (ECOC) exhibition held in London.  

• Oclaro's Raman and hybrid amplifier platform for new networks
• MxN wavelength-selective switch from JDSU
• 200 Gigabit multi-vendor coherent demonstration
• Tunable SFP+ designs proliferate
• Finisar extends 40 Gigabit QSFP to 40km
• Oclaro’s tackles wireless backhaul with 2km SFP+ module

Finisar's 40km 40 Gig QSFP+ demo. Source: Finisar

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ROADMs and their evolving amplification needs

Technology briefing: ROADMs and amplifiers

Oclaro announced an add/drop routing platform at the recent OFC/NFOEC show. The company explains how the platform is driving new arrayed amplifier and pumping requirements.  

A ROADM comprising amplification, line-interfaces, add/ drop routing and transponders. Source: Oclaro

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