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Entries in Coherent (37)


Transmode chooses coherent for 100 Gigabit metro

Transmode has detailed its 100 Gigabit metro strategy based on a stackable rack, a concept borrowed from the datacom world. 

The Swedish system vendor has adopted coherent detection technology for 100 Gigabit-per-second (Gbps) optical transmission, unlike other recent metro announcements from ADVA Optical Networking and MultiPhy based on 100Gbps direct-detection. 


"Metro is a little bit diverse. You see different requirements that you have to adapt to."

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MultiPhy boosts 100 Gig direct-detection using digital signal processing

MultiPhy has detailed its 100 Gigabit direct-detection receiver IC for use in a pluggable CFP optical module addressing the metro market. 

The MP1100Q chip is being aimed at two cost-conscious metro networking requirements: 100 Gigabit point-to-point links and dense wavelength-division multiplexing (DWDM) metro networks.


The MP1100Q as part of a 100 Gig CFP module design. Source: MultiPhy

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High fives: 5 Terabit OTN switching and 500 Gig super-channels.

Infinera has announced a core network platform that combines Optical Transport Network (OTN) switching with dense wavelength division multiplexing (DWDM) transport. "We are looking at a system that integrates two layers of the network," says Mike Capuano, vice president of corporate marketing at Infinera. 


"This is 100Tbps of non-blocking switching, all functioning as one system. You just can't do that with merchant silicon."

Mike Capuano, Infinera 



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Rational and innovative times: JDSU's CTO Q&A Part II

Brandon Collings, JDS Uniphase's CTO for communications and commercial optical products, talks about fostering innovation and what is coming after 100 Gigabit optical transmission. Part II of a Q&A with Gazettabyte.

"What happens after 100 Gig is going to be very interesting"

Brandon Collings (right), JDSU

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Q&A: Ciena’s CTO on networking and technology

In Part 2 of the Q&A, Steve Alexander, CTO of Ciena, shares his thoughts about the network and technology trends.

Part 2: Networking and technology

"The network must be a lot more dynamic and responsive"

Steve Alexander, Ciena CTO


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MultiPhy eyes 40 and 100 Gigabit direct-detect and coherent schemes 

Visiting Israeli start-up MultiPhy at its office in Ness Ziona, near Rehovot, involves dancing around boxes. “We are about to move,” apologises Ronen Weinberg, director of product management at MultiPhy. But the company will not have to travel far. It is crossing buildings in the same Ness Ziona Science Park, moving in next to Finisar’s Israeli headquarters.


MultiPhy's Avi Shabtai (left) and Ronen Weinberg

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To efficiency and beyond

Briefing:  Dynamic optical networks

Part 3: ROADM and control plane developments

ROADMs and control plane technology look set to finally deliver reconfigurable optical networks but challenges remain.

Operators are assessing how best to architect their networks - from the router to the optical layer - to boost efficiencies and reduce costs.  It is developments at the photonic layer that promise to make the most telling contribution to lowering the cost of transport, a necessity given how the revenue-per-bit that carriers receive continues to dwindle.


Global ROADM forecast 2009 -14 in US $ miliions Source: Ovum

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