Telecommunications: III–V/silicon tunable laser

Solid indium phosphide (INP) tunable lasers for telecommunications networks are costly to manufacture and ill-suited to integration with other photonic and electronic components. Researchers from Leti and the III–V Lab have now produced a tunable laser on a silicon substrate coupled with a III–V material.
This hybrid monomode laser boasts a novel waveguide system coupled with two thermo-optically-controlled rings for a tuning range of 35 nm. The system, which enables the allocation of 80 wavelengths in the International Telecommunications Union (ITU) standard wavelength plan, is intended for metropolitan and long-distance telecommunications networks.
The researchers are now working on integrating the hybrid lasers with other optical functions with the goal of producing complete transmitters suitable for telecommunications and data centers.

Contact: segolene.olivier@cea.fr

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