Aiming to become the global leader in chip-scale photonic solutions by deploying Optical Interposer technology to enable the seamless integration of electronics and photonics for a broad range of vertical market applications

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Message: Michal Lipson.....Columbia Engineering Lipson Nanophotonics Group

Thanks Macnai for sharing. 

In my opinion there is a clear strategic reason as to why Michal was appointed to the BOD, could this breakthrough could be it for the bio/sensing markets? 

These sections caught my attention, could they be using Poets proprietary waveguides and packaging to architect these lasers? (as Suresh has said "it's about the waveguides" - Singular in its Genius video @ 5:10)

The team overcame the propagation loss issue by designing a platform that minimizes both the material absorption and surface scattering losses simultaneously for all the visible wavelengths. To guide the light, they used silicon nitride, a dielectric widely used in the semiconductor industry that is transparent for visible light of all colors. Even though there is minimal absorption, the light still experiences loss due to unavoidable roughness from the fabrication processes. The team solved this problem by designing a photonic circuit with a special type of ring resonator. The ring has a variable width along its circumference, allowing for single-mode operation characteristic of narrow waveguides, and low loss characteristic of wide waveguides. The resulting photonic circuit provides a wavelength-selective optical feedback to the FP diodes that forces the laser to emit at a single desired wavelength with very narrow linewidth.

Next steps

The researchers, who have filed a provisional patent for their technology, are now exploring how to optically and electrically package the lasers to turn them into standalone units and use them as sources in chip-scale visible light engines, quantum experiments, and optical clocks.

"In order to move forward, we have to be able to miniaturize and scale these systems, enabling them to eventually be incorporated in mass-deployed technologies," said Lipson, a pioneer in silicon photonics whose research has strongly shaped the field from its inception decades ago, with foundational contributions in the active and passive devices that are part of any current photonic chip. She added, "Integrated photonics is an exciting field that is truly revolutionizing our world, from optical telecommunications to quantum information to biosensing."

 

So much to look forward to, soon? 

H Jr. 

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