Replies to post #85712 on Lightwave Logic Inc (LWLG)

[spartex]

Well I answered my question to Photonics_Guy after looking at a few of the past summer PRs by Lightwave which faded from my brain cells on the R33 terminology.


PG said: R33 is key. R33 is a quantitative measure of the modulating effectiveness of the modulator material. Lightwave polymers are already beating all other materials in this regard (to my knowledge). Michael has indicated that Lightwave can continue to even optimize this parameter further with continued R&D.

Lightwave PR on Aug 4th titled: Lightwave Logic Announces Breakthrough Thermal Design for Use in Ultra-High-Speed Polymers

"Enhanced Thermal Properties Enable the Speed, Flexibility and Stability Needed for High-Volume Silicon Foundry Processes

ENGLEWOOD, Colo., Aug. 4, 2021 /PRNewswire/ -- Lightwave Logic, Inc. (OTCQX: LWLG), a technology platform company leveraging its proprietary electro-optic polymers to transmit data at higher speeds with less power, today announced that it has developed improved thermal design properties for electro-optic polymers used in its Polymer Plus™ and Polymer Slot™ modulators, enabling the speed, flexibility and stability needed for high-volume silicon foundry processes.

"High-temperature thermal performance is one measure of robustness and a key metric commonly discussed with potential customers for fiber optic datacenter and telecommunications applications," said Dr. Michael Lebby, Chief Executive Officer of Lightwave Logic. "Our in-house team successfully created a 2x improvement in r33, while allowing higher stability during poling and post-poling. This provides not only better thermal performance, but also enables greater design flexibility in high-volume silicon foundry PDK (process development kit) processes. This is critical as we seek to make our technology ubiquitous throughout the marketplace.

"Preliminary results suggest that Lightwave Logic's recently developed electro-optic polymer material, designed based on customer input, displays unrivaled thermal performance tolerance as compared to any commercial solution in use today. We look forward to receiving feedback on this exciting new material from our potential customers," concluded Lebby.

[Photonics_Guy]

Spartex - Here's a response to your question below.

Great post Photonics_Guy, I hope you can answer a question I have on your paragraph below. Is this R33 from the spider charts that Dr. Lebby has been presenting in his video slides? And when you say, "already beating all other materials" is that by his statement of 2-3x higher data transmission speeds (with 1/2 the power) minus need for chip-driver than "all other materials"? Thanks so much for your insights and knowledge!

The chart below from a recent presentation that Michael gave shows the "3dB Bandwidth" of LWLG's polymers compared to competing materials. The key takeaway is that the wider the bandwidth a given material provides, the faster the data rate it supports. LWLG polymers are running circles around the competition. As I said in the earlier post, the r33 parameter is the quantitative measure of how effective the modulator material is in modulating the data onto the optical signal coming from the laser.

R33 addresses the degree of signal loss through the material as well as its modulating capability. As the 3dB bandwidth of the modulator increases, that means the loss of optical power through the device is low enough to support the bandwidth.

A tradeoff exists between the Vpi of the device and the 3dB bandwidth. As Vpi is increased, the bandwidth increases, and - conversely - as the Vpi is lowered, the 3dB bandwidth decreases. However, to directly drive the modulator from CMOS circuits, we need a very low Vpi of 1V or less. Competing design parameters. The reason r33 is so important is that a higher r33 allows the designer to achieve higher bandwidths WHILE also lowering the Vpi of the device so it can be directly driven from CMOS circuits.



I hope this helps.

PG