Researchers transmit data via a semiconductor laser, opening the door to ultra-high-speed Wi-Fi

Phys.org  April 25, 2019
Previously the team of researchers in the US (Harvard University, Texas A&M, MIT Lincoln Laboratory) discovered that an infrared frequency comb in a quantum cascade laser could be used to generate terahertz frequencies, quantum cascade laser frequency combs could also act as integrated transmitters or receivers to efficiently encode information. Now they created a dipole antenna on the electrode of the device, modulated the frequency comb to encode information on the microwave radiation created by the beating light of the comb. Using the antenna, the microwaves containing the encoded information are radiated out from the device. The radio signal is received by a horn antenna, filtered and sent to a computer. They also demonstrated that the laser radio could receive signals. The team was able to remotely control the behavior of the laser using microwave signals from another device…read more. TECHNICL ARTICLE 

This device uses a frequency comb laser to emit and modulate microwaves wirelessly. Credit: Marco Piccardo/Harvard SEAS

Posted in Emerging technology and tagged , .

Leave a Reply