| 2019-ZUBI-68594 | |
| Researchers at Purdue University have developed an all-dielectric metamaterial cladding device that strongly confines light inside low-index waveguides. The new class of nanofabricated metamaterials have been fine-tuned by Purdue researchers to feature giant birefringence and ideal electromagnetic mode propagation inside a glass core. The order of magnitude for light escaping from glass cores has been decreased by a factor of one as compared to current technologies, creating an advantage for integrated photonic circuits and for resonators. Ultra-compact, densely integrated optical components manufactured on a CMOS-foundry platform are highly desirable for optical information processing, on-chip LIDAR and electronic-photonic co-integration. However, the large spatial extent of evanescent waves arising from nanoscale confinement, ubiquitous in silicon photonic devices, causes significant cross-talk and scattering loss. Purdue researchers have demonstrated that anisotropic all-dielectric metamaterials open a new degree of freedom in total internal reflection to shorten the decay length of evanescent waves. Purdue researchers have achieved reduction of cross-talk by greater than 30 times and the bending loss by greater than 3 times in densely integrated, ultra-compact photonic circuit blocks. Advantages: -Confines light -Reliable Potential Applications: -Photonic circuits -Waveguides -Resonators |
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Feb 7, 2017
Foreign, Non-PCT
Canada
2,842,449
Feb 16, 2021
Feb 7, 2014
Utility Patent
United States
9,274,276
Mar 1, 2016
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