News: Optoelectronics
26 September 2024
TRUMPF improves performance of datacom VCSELs with proprietary subwavelength surface-grating technology
TRUMPF Photonic Components GmbH of Ulm, Germany (part of the TRUMPF Group) — which makes vertical-cavity surface-emitting lasers (VCSELs) and photodiodes — says that it has improved its proprietary subwavelength surface-grating technology for datacom VCSELs.
Subwavelength grating technology leads to better relative intensity noise (RIN) performance, reduces sensitivity against optical feedback and avoids polarization flips. As a result, the signal quality in a complex optical link is improved and higher data rates enabled without changing the light–current–voltage (LIV) characteristics. The benefits of this technology work for all offered wavelengths.
Picture: TRUMPF’s 100G VCSEL and photodiode, offered as a matching pair solution.
“Our proprietary, advanced subwavelength grating technology has been a proven, key feature in our VCSEL solutions for two decades now and has been employed in many millions of consumer devices,” says Ralph Gudde, VP of marketing & sales. “This technology found its way into our datacom products and offers customers a performance that sets them apart,” he adds.
Advanced optical data communication systems benefit from the high-speed data transmission that the VCSEL-based technology offers. TRUMPF says that its new 100G wavelength division multiplexing (WDM) VCSELs emitting at 850nm, 880nm, 910nm and 940nm have a ground–signal–ground (GSG) pad layout and are flip-chip bondable. They will have a bandwidth of 25GHz, are fully passivated and mechanically protected. TRUMPF is offering both VCSELs and photodiodes as a matching pair solution in various configurations like singlets, 1x2, 1x4, 1x8 and/or 1x12 arrays. The VCSELs are specifically designed to meet the demands of data centers, AI/ML, high-performance computing, and other bandwidth-intensive applications, as they deliver stable and reliable data transmission at high speeds.
TRUMPF applies proprietary subwavelength surface-grating technology to datacom VCSELs
