23rd July 2003
IQE in leading
role with long-wavelength VCSELs
In a recent article in FibreSystems Europe (www.fibers.org), it was reported that researchers from Chalmers University of Technology, the Royal Institute of Technology, Zarlink Semiconductor and IQE (Europe) Ltd, had produced 1287nm vertical-cavity surface emitting lasers (VCSELs) using standard metal organic vapour phase epitaxy
VCSELs operating at shorter wavelengths (850nm) have been in production for some time and are deployed in commercial applications and short-distance multimode fibre links for data communications. Previously, the longer wavelength devices that are necessary to for long-range optical communications, have been produced using a sophisticated design that require complex fabrication techniques. The collaborative effort of the four partners developed advanced GaInNAs materials technology to allow conventional VCSEL processing to be employed.
The article reported that the team also produced VCSELs operating at 1268nm and 1303nm and that the next phase is to look at the long-term stability and optimise the MOVPE growth process.
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