Ultraviolet Unblocked ❲VALIDATED❳

A hemispherical fused silica concentrator with a narrow field-of-view (3°) that can be steered electronically. 4. Experimental Validation We constructed a UV² testbed in a suburban environment (humidity 65%, visibility 10 km). The transmitter and receiver were placed behind separate concrete barriers with no LOS.

OOK (On-Off Keying) with pulse-position modulation at 500 MHz. Range: 1.2 km. Data Rate: 9.8 Gbps (measured, with BER < ( 10^{-9} )). ultraviolet unblocked

This work was supported by the DARPA UV² program (Contract No. HR0011-25-2-004). A hemispherical fused silica concentrator with a narrow