In fiber optic lines with one light ... Using an RGB LED, [Shahriar] sends three levels of Red, Green, and Blue to transmit 9 bits at a time – perfect for sending a byte with a parity check ...

(KRON) –The Bay Area Rapid Transit (BART) has announced limited service on the Green line between Berryessa ... “We can confirm that a fiber optics communication line was illegally cut ...