Optical wireless communication (OWC) links suffer from strict requirements of pointing, acquisition, and tracking (PAT) between the transmitter and receiver. Extending the narrow field-of-view (FoV) of conventional light-focusing elements at the receiver side can relax the PAT requirements. Herein, we use all-inorganic CsPbBr3 nanocrystals (NCs) to extend various optical concentrators’ FOV to 60°, regardless of the original FOV values of the concentrators. Given the robustness of UV light against communication channel misalignment, the used CsPbBr3 NCs provide another advantage of converting transmitted UVC light into a green color that matches the peak absorption of the widely available Si-based detectors. We evaluated the feasibility of the reported wide FoV optical detectors by including them in deep UV OWC systems, deploying non-return-to-zero on-off keying (NRZ-OOK) and orthogonal-frequency division multiplexing (OFDM) modulation schemes. The NRZ-OOK and OFDM schemes exhibit stable communication over the 60° FoV, providing data transmission rates of 100 Mb/s and 71.6 Mb/s, respectively, a unique capability to the reported design.
Bibliographical noteKAUST Repository Item: Exported on 2023-07-21
Acknowledged KAUST grant number(s): BAS/1/1614-01-01, ORA-2022-5313
Acknowledgements: King Abdullah University of Science and Technology (BAS/1/1614-01-01, ORA-2022-5313); King Abdulaziz City for Science and Technology. Sultan Alshaibani gratefully acknowledges support from King Abdulaziz City for Science and Technology (KACST).
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics