Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
MeirG
User Rank
Rookie
re: Photonic PCBs inching closer
MeirG   2/7/2013 12:19:28 PM
NO RATINGS
Well, we now need optical connectors to optically couple signals on a plugin board to its motherboard...

junjunwu168
User Rank
Rookie
re: Photonic PCBs inching closer
junjunwu168   2/7/2013 1:54:53 AM
NO RATINGS
If the waveguide is not isolated it is probably in touch with the polyimide FPCB. PI has higher RI than silicone. So to form a lossless waveguide during bending in smaller diameter you will need a low RI cladding to the silicone. Fluoropolymer is probably the only choice for silicone. Am I missing something?

krisi
User Rank
CEO
re: Photonic PCBs inching closer
krisi   2/5/2013 8:01:28 PM
NO RATINGS
Cool technology...would anyone be interested in presenting it at emerging technologies symposium in Grenoble in 2014? www.cmosetr.com, kris.iniewski@gmail.com

jeremybirch
User Rank
CEO
re: Photonic PCBs inching closer
jeremybirch   2/5/2013 3:07:13 PM
NO RATINGS
1) silicone is a analogue of carbon based polymers - but the chain is of silicon atoms not carbon ones. There are many different silicones. 2) do they deposit the silicone in tracks or are they coating a whole board then etching it? I don't think 45 minute drying time is very practical if you have to deposit it as tracks, but as a board coating it might just work

resistion
User Rank
CEO
re: Photonic PCBs inching closer
resistion   2/5/2013 2:27:37 PM
NO RATINGS
If the index difference is that large, you have to worry about coupling loss from reflection at the waveguide end.

IBMLabs
User Rank
Rookie
re: Photonic PCBs inching closer
IBMLabs   2/5/2013 1:07:56 PM
NO RATINGS
With waveguides, loss-less bends can be made in case the index contrast is large enough compared to the bending radius of the bend. In the optical ray model, the total internal reflection condition is then still satisfied.

resistion
User Rank
CEO
re: Photonic PCBs inching closer
resistion   2/5/2013 8:22:31 AM
NO RATINGS
Any optics person would know bends in waveguides cause light loss as total internal reflection is no longer satisfied.



Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
Betajet
3 comments
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Max Maxfield

Recommended Reads From the Engineer's Bookshelf
Max Maxfield
6 comments
I'm not sure if I read more than most folks or not, but I do I know that I spend quite a lot of time reading. I hate to be idle, so I always have a book or two somewhere about my person -- ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
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.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...