Phys.org June 9, 2022
A team of researchers in the US (University of Central Florida, NIST, Stanford University, University of Pennsylvania) has experimentally demonstrated a 400 Gbit/s optical communication link utilizing wavelength-division multiplexing and mode-division multiplexing for a total of 40 channels. This link utilizes a 400 GHz frequency comb source based on a chip-scale photonic crystal resonator. Silicon-on-insulator photonic inverse-designed 4 × 4 mode-division multiplexer structures enabled a fourfold increase in data capacity. They showed less than −10 dBm of optical receiver power for error-free data transmission in 34 out of a total of 40 channels using a PRBS31 pattern…read more. TECHNICAL ARTICLE
… The ring-shaped photonic crystal resonator (left) features a nanopattern inside (right) that splits a selected resonant mode for comb generation… Credit: Optics Letters (2022)Â