Thanks Oz! I agree with your view.

I have not seen that link you posted before. Slide 3 Silicon Photonics Roadmap really captured my attention as it points to POET being way ahead of the curve with the optical interposer.

https://indico.cern.ch/event/704622/contributions/2890650/attachments/1598314/2538378/CERN-EP_RD_program_on_High_Speed_Links_-_Silicon_photonics.pdf

Last night I was reviewing Suresh's CIOE Sept presentation. I thought it might be helpful to try and breakdown some of the points to help people understand what the advantages are for the interposer.

https://poet-technologies.com/docs/presentations/POET%20CIOE%20Presentation_Sept_2018_FINAL.pdf

POET Optical Interposer Technology - Essential Features. Slide 14

Material Properties of Dielectric Waveguides. As per the AGM presentation transcript Suresh makes the following comment:

00:39:47 – As a benchmark, Silicon Photonics that uses silicon waveguides, typically have, let’s say, an optical loss – it is measured in decibels – that is 2 decibels per centimeter length, let’s say, of the waveguide. We have been able to improve that by order of magnitude. So we now have demonstrated that we are at 0.2 dB/cm, so very, very low-loss waveguides.

Now if you fact check that comment you will see that silicon waveguides that are used in silicon photonics do have the loss level reported. There has of course been lots of work in an effort to improve silicon waveguides but that level of loss is basically where commercial bulk silicon resides.

Why is it important that losses be minimized? Propagation loss has a direct impact on the power budget. The greater the loss the high the power required to make up for those losses.

Slide 15) If we look at where POET was last year in 2017. At 1302nm (roughly mid-point within the O band range) loss was measured as 3.2 db/cm and at 1553nm (within the C band range used for CWDM applications) loss was measured as 3.05 db/cm. As of the Sept the material properties of the dielectric for O band and C band are now less than .02db/cm.

So  as of June 21 Suresh was quoting that they were at .02db/cm an order of magnitude less than silicon and as of Sept they are now measuring propagation loss at less than .02 dB/cm.

Again this reduces the power budget and thus the heat generated.