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krisi
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Re: laser?
krisi   11/11/2013 11:35:39 AM
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thanx @microdisk...any idea how much alignment operation within 1um would cost in volume?

microdisk
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Re: laser?
microdisk   11/11/2013 11:29:37 AM
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It should be no problem to form fiber to waveguide automation alignment as long as you can have a good spot size converter to expand the mode to match to the single mode fiber. 1um automation alignment accuracy should be ok to achieve.

krisi
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Re: laser?
krisi   11/7/2013 5:54:45 PM
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exactly...even is laser is cheap (and it is not) you still need to the packaging, laser alignment with silicon chip...not an easy thing to automate

microdisk
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Re: laser?
microdisk   11/7/2013 1:30:35 AM
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it is ture, lasers cost are 10 times of silicon photonic chips. evanscent coupling based laser has been demonstrated and they claimed that the cost is much lower than other laser vendor, but the overall power cost still high (Ith is high). Fujitsu is using butt coupling for laser, but the packaging cost may high, the best way is to have a good grating coupler to couple the light into silicon photonic chip vertcially. 

krisi
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Re: What is the main benefit of silicon photonics?
krisi   10/24/2013 12:10:33 PM
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This is not as simple as it sounds...you can't put silicon photonics transceiver for every IO signal...you can (maybe) do it in few selected places...but again where is teh source of the optical clock coming from??? I doubt that 2017 will see commercial deployment, the technology is not ready yet...Kris

alche
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Re: laser?
alche   10/24/2013 11:37:21 AM
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 Most of the plastic waveguide components are easily integratable i.e. receivers/transmitters, etc. Indeed that's the attraction. Couplers can reside in the waveguide itself or the connector or the circuit board. Of course complete integration may not be possible - at least for some time, but same with Si photonics.

rick merritt
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Re: What is the main benefit of silicon photonics?
rick merritt   10/24/2013 10:01:43 AM
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@Prabhakar: Yes, the Oracle presnetation did a great job putting into context expected advances in CPUs and memory that would leave interconnect as the next bottleneck in the near future and silicon photonics as the best route to busting thru it.

prabhakar_deosthali
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Re: What is the main benefit of silicon photonics?
prabhakar_deosthali   10/24/2013 4:03:29 AM
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@Terry.Bollinger

Thanks for this great information. I am truly enlightened now on this topic.

In the early days of microprocessors , the processor speed used to be a limitation to handle the real time situations so much so that we had to count those CPU cycles while writing the I/O handling interrupts. Now it seems the other way round .


rick merritt
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Re: Optical C2C
rick merritt   10/23/2013 7:14:21 PM
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Intel has been talking about its good research for a decade. Krishnamoorthy said Oracle/Sun has been working as long but saying less. Rather than in house, Oracle is doing more with partners--startups Kotura and Luxtera among them. The sense is everyone is at about the same stage of readiness for a ~2017 market.

krisi
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Re: laser?
krisi   10/23/2013 6:55:54 PM
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but plastic waveguide gives you only a media transport option...no integration with electronics on silicon chip

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