counter for iweb
Silicon Photonics

Published book, click here


Alcatel-Lucent reveals its 100Gbps-coherent hand


It would be irresponsible of any system vendor to overlook a solution that can bring a cost advantage to their customer”


Sam Bucci, Alcatel-Lucent



What is being announced?

  • Alcatel-Lucent has a commercially available 100Gbps optical transmission system.
  • 40Gbps coherent transmission is also supported.

Click to read more ...


The InfiniBand roadmap gets redrawn

The InfiniBand Trade Association (IBTA) has announced a new roadmap for the low latency bi-directional link. What was Eight Data Rate InfiniBand will now be known as Enhanced Data Rate (EDR) and be upgraded from 20Gbps to 26Gbps per channel. EDR will deliver a 104Gbps data rate in a four-channel InfiniBand (4x) implementation and 312Gbps when used as a 12-channel (12x) interface.


“We can already demonstrate in silicon a 30Gbps transmitter."

Marek Tlalka, Luxtera





Click to read more ...


Ciena post-MEN

Ciena has been busy since completing the acquisition of Nortel’s Metro Ethernet Networks (MEN) business back in March.


“The 40G and 100G technology were key to the deal and we made sure that the core team was still there”


Tom Mock, Ciena




Click to read more ...


Infinera PICs 100Gbps coherent 

What is being announced?

Infinera is expediting its product plans, basing its optical transmission roadmap on coherent detection.

The company plans to launch a 100Gbps coherent transmission system in 2012. The design will be based on a pair of 5x100Gbps ultra-long-haul photonic integrated circuit (PIC) chips to enable its systems to deliver 8 terabits-per-second (Tbps) over a fibre.


“This change in roadmap is because of the successful development of our 100G coherent ASIC programme, and we have integrated five 100Gbps coherent channels onto one card.”

Drew Perkins, Infinera

Click to read more ...


40Gbps, 100Gbps and beyond mind map

A mind map of the 40Gbps, 100Gbps and beyond high-speed optical transmission market to accompany the three-part April 2010 feature.



Click here to download the mind map


Optical transmission beyond 100Gbps

Briefing: High-speed optical transmission. 

Part 3: What's next?

Given the 100 Gigabit-per-second (Gbps) optical transmission market is only expected to take off from 2013, addressing what comes next seems premature. Yet operators and system vendors have been discussing just this issue for at least six months.

And while it is far too early to talk of industry consensus, all agree that optical transmission is becoming increasingly complex. As Karen Liu, vice president, components and video technologies at market research firm Ovum, observed at OFC 2010, bandwidth on the fibre is no longer plentiful.


“We need to keep a very close eye that we are not creating more problems than we are solving.”

Brandon Collings, JDS Uniphase.

Click to read more ...


Is a datacom and telecom mini-boom taking place? 

A reader commented that both semiconductor and optical transceiver lead-times are being extended and that the “good times are here”.  But what is the cause, he asked, and are good times really here?

Daryl Inniss believes it is largely a reflection of cutbacks that have run their course. “The industry cut back swiftly and deeply when the market started to tank, cutting suppliers and capacity,” says Inniss, practice leader, components at market research firm Ovum.


“I think it's recovery dynamics - people ordering a tiny bit more and there are no parts available such that lead-times are stretching out simulating a boom.”

Brad Smith, LightCounting

Click to read more ...