New Metamaterial to Harness Power of Light: Technology Will Improve Optical Computing, Telecommunications
The team – which includes collaborators from UMass Lowell, King’s College London, Paris Diderot University and the University of Hartford -has created a new class of metamaterial that can be “tuned” to change the color of light. This technology could someday enable on-chip optical communication in computer processors, leading to smaller, faster, cheaper and more power-efficient computer chips with wider bandwidth and better data storage, among other improvements. On-chip optical communication can also create more efficient fiber-optic telecommunication networks.
By converting electrical signals into pulses of light, on-chip communication will replace obsolete copper wires found on conventional silicon chips, Podolskiy explained. This will enable chip-to-chip optical communication and, ultimately, core-to-core communication on the same chip.
“The end result would be the removal of the communication bottleneck, making parallel computing go so much faster,” he said, adding that the energy of photons determines the color of light. “The vast majority of everyday objects, including mirrors, lenses and optical fibers, can steer or absorb these photons. However, some materials can combine several photons together, resulting in a new photon of higher energy and of different color.”
Podolskiy says enabling the interaction of photons is key to information processing and optical computing. “Unfortunately, this nonlinear process is extremely inefficient and suitable materials for promoting the photon interaction are very rare.”
Podolskiy and the research team have discovered that several materials with poor nonlinear characteristics can be combined together, resulting in a new metamaterial that exhibits desired state-of-the-art nonlinear properties.
“The enhancement comes from the way the metamaterial reshapes the flow of photons,” he said. “The work opens a new direction in controlling the nonlinear response of materials and may find applications in on-chip optical circuits, drastically improving on-chip communications.”
Contacts and sources:
Christine Gillette and Nancy Cicco
University of Massachusetts Lowell
Source: http://www.ineffableisland.com/2018/12/new-metamaterial-to-harness-power-of.html
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