5 March 2018
CST Global samples 1270nm DFB lasers for 10G PON
© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.
III-V optoelectronic foundry Compound Semiconductor Technologies Global Ltd (CST Global) of Hamilton International Technology Park, Blantyre, near Glasgow, Scotland, UK (a subsidiary of Sweden’s Sivers IMA Holdings AB) has sampled its 1270nm 2.5Gb/s asymmetric and 10Gb/s symmetric distributed feedback (DFB) lasers for 10G passive optical network (PON) applications.
“CST Global is currently beta sampling its asymmetric 2.5Gb/s lasers and alpha sampling its symmetric 10Gb/s lasers,” says technical director Andrew McKee, who is leading the DFB laser development. “The asymmetric beta samples, which are undergoing ITU-GR468 reliability testing, are available for customer trials in known good die on tape (KGDT) and TO56-can formats,” he adds.
“The asymmetric 2.5Gb/s 1270nm DFB lasers allow the existing optical networking units (ONUs), found at the user end of fiber-to-the-home (FTTH) broadband solutions, to be re-used. As a result, we expect a fast uptake in 2.5Gb/s 1270nm lasers, which is why this solution has been a priority,” McKee continues.
“The symmetric 10Gb/s 1270nm laser option requires a new design of ONU before a large-scale uptake is expected, but it is already in demand,” he adds. “We are pleased to offer a solution for the two prevailing technologies in this growing market.”