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Silicon Photonics

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Entries in route-and-select (3)


Relentless traffic growth leads to a ROADM rethink

Technology briefing: ROADMs

Lumentum has developed an optical switch to enable reconfigurable optical add-drop multiplexers (ROADMs) to cope with the traffic growth expected over the next decade. 

The company’s MxN wavelength-selective switch (WSS) will replace the existing multicast switch used in colourless, directionless and contentionless ROADMs. The Lumentum TrueFlex 8x24 twin switch will enable networking nodes of 400-terabit capacity.

“This second-generation switch is what will take us into the 100 gigabaud and super-channel era of network scalability,” says Brandon Collings, CTO of Lumentum.

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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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JDSU's Brandon Collings on silicon photonics, optical transport & the tunable SFP+

JDSU's CTO for communications and commercial optical products, Brandon Collingsdiscusses reconfigurable optical add/drop multiplexers (ROADMs), 100 Gigabit, silicon photonics, and the status of JDSU's tunable SFP+.


"We have been continually monitoring to find ways to use the technology [silicon photonics] for telecom but we are not really seeing that happen”

Brandon Collings, JDSU

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