Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
docdivakar
User Rank
Author
re: Cisco packs silicon photonics on 3-D ICs
docdivakar   1/29/2013 7:27:17 PM
NO RATINGS
Rick, the title is somewhat misleading... I think Mr. Swift was referring to planar Si optical waveguides. Using these in 3D optical interconnect, from today's on-chip optical interconnect technology, is still far away from fruition from a practical view point. Last year's DesignCon I think there was a talk by HP Lab's chief about this but it has remained largely as a research project. There is no doubt that this is the next growth area for transistors. Underwhelming SDN/OpenFlow by Cisco is not surprising because it is a disruptor to their legacy products! For those interested, here is the link to presentations from Silicon Valley Comsoc on SDN's by Guru Parulkar & Dan Pitt of Open Networking Research Center: http://ewh.ieee.org/r6/scv/comsoc/ComSoc_2012_Presentations.php MP Divakar

a.sun
User Rank
Author
re: Cisco packs silicon photonics on 3-D ICs
a.sun   1/29/2013 7:25:23 PM
NO RATINGS
The laser is made of InP by bonding a 2-4" InP wafer onto a 6-8" Si wafer (the size mismatch is an issue!) and thinning down the InP wafer to a few micrometers for later planar processing steps. As far as I know, Intel's solution uses separate CMOS TIA & laser driver chips in addition to a Si photonics chip (including functions of photo detection, modulation and optical routing) in comparison to a more integrated solution from Luxtera.

a.sun
User Rank
Author
re: Cisco packs silicon photonics on 3-D ICs
a.sun   1/29/2013 7:24:35 PM
NO RATINGS
The laser is made of InP by bonding a 2-4" InP wafer onto a 6-8" Si wafer (the size mismatch is an issue!) and thinning down the InP wafer to a few micrometers for later planar processing steps. As far as I know, Intel's solution uses separate CMOS TIA & laser driver chips in addition to a Si photonics chip (including functions of photo detection, modulation and optical routing) in comparison to a more integrated solution from Luxtera.

HS_SemiPro
User Rank
Author
re: Cisco packs silicon photonics on 3-D ICs
HS_SemiPro   1/29/2013 6:37:11 AM
NO RATINGS
That's the beauty of 2.5D and full 3D designs, greatly reduce system cost improve signal latency

rick merritt
User Rank
Author
re: Cisco packs silicon photonics on 3-D ICs
rick merritt   1/29/2013 6:07:37 AM
NO RATINGS
But not as much resistance as an off-chip design ;-)

resistion
User Rank
Author
re: Cisco packs silicon photonics on 3-D ICs
resistion   1/29/2013 4:13:20 AM
NO RATINGS
The lasers are still non-Si; they are probably InP or the like at the very least. So it looks like interposers will replace motherboards? That's pretty disruptive. Expect some resistance.

<<   <   Page 2 / 2


Radio
NEXT UPCOMING BROADCAST
IoT Network Shoot Out
July 16, 1pm EDT Thursday

Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.

Brought to you by

Most Recent Comments
Flash Poll
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.