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...
Source: http://www.semiconductor-today.com/news ... 0322.shtml