Fiber glow brings more go for underwater communications

Fiber glow brings more go for underwater communications

5/15/2022

In free-space and underwater optical wireless communication systems, there is often a trade-off between the size of a photodetector and its bandwidth, with larger area devices capturing more light but at the expense of a slower maximum data speed. Now, researchers from KAUST have developed an elegant solution to the problem.

Chun Hong Kang and Boon Ooi and their collaborators have designed and fabricated luminescent polymer optical fibers doped with nanocrystals of CsPbBr3 that act as a large-area scintillator. The idea is that the fibers absorb an optical data signal transmitted in the violet spectral region (around 400 nm) and then reemit it in the green region (around 510 nm) so that it can be detected by a fast avalanche photodetector.​

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