Laser driver features automatic laser calibration

8th September 2016

Daisy Stapley-Bunten

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A supplier of analogue and mixed-signal semiconductors, Semtech, has announced the release of the GN28L95 integrated laser driver and limiting amplifier for asymmetric 10G PON applications, combining for the first time Semtech’s automatic laser calibration technology with programmable 2.5G transmit and 10G receive signal paths.

The 10G PON market is expected to benefit from the ongoing roll-out of Fibre-To-The-Home (FTTH) network deployments where PON delivers economical Internet connectivity. Semtech is showcasing its optical products at the China International Optoelectronic Expo (CIOE) in Shenzhen, booth 1C01, on September 6^th-9^th.

This technology helps achieve cost reduction in the Optical Networking Unit (ONU) in Fibre-To-The-Home customer premises equipment by enabling optics to be mounted directly on the main ONU board. This helps manufacturers keep pace with the rapid global growth and cost competition in the market for next gen high data rate XGPON and 10GEPON ONUs.

The GN28L95 is available in a small 4x4mm QFN package, and it is compatible with a wide range of low-cost optics and requires minimal setup time with high production yield. Low-cost lasers and Avalanche PhotoDiodes (APDs) can be optimised using eye shaping technology to both transmit and receive. Further cost savings can be expected to be achieved through integration of the APD controller and digital control directly with the MAC processor.