8 March 2022
Vector produces PCSEL arrays emitting four concurrent 1300nm wavelengths
Photonic-crystal surface-emitting laser (PCSEL) firm Vector Photonics Ltd of Glasgow, Scotland, UK has produced 1300nm, all-semiconductor PCSELs targeting 800Gb datacoms applications. The PCSEL arrays emit four concurrent 1300nm wavelengths, with a side-mode suppression ratio (SMSR) of about 35dB.
“Vector Photonics’ 1300nm compound semiconductor lasers enable new levels of PCSEL commercialization for datacoms applications,” says chief technology officer Dr Richard Taylor. “Unlike incumbent DFB [distributed feedback] and EEL [edge-emitting laser] data-center laser technologies, PCSELs deliver both the high speed and high power required, in the same device. PCSELs are surface emitting, with light coming from the top of the laser not the side, which vastly reduces packaging costs,” he adds. “We now have four 1300nm wavelengths emitting from a monolithic PCSEL array, rather than four separate chips, simplifying post-production assembly and significantly reducing packaging costs.”