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MACOM demos linear EML driver for 400G applications

Optical and semiconductor supplier M/A-COM Technology Solutions (MACOM), has unveiled a linear externally modulated laser (EML) driver IC that is designed to enable 400G optical modules based on higher-order modulation formats.

The MAOM-003115 is a compact and high-bandwidth linear EML driver which can deliver up to 2Vpp single-ended output. This surface mount device offers variable gain control and excellent linearity over the operating range. The driver has been used to demonstrate a 400Gbps link over 2km of singlemode fibre using four wavelengths, each running at 100Gbps.

Data centre providers have challenged optical module vendors to provide a low-power and low-cost approach to 400G in a QSFP form factor to maximise port density in new mega data centres. Higher order complex modulation schemes enable 100-Gbps data rates on a single wavelength using currently available optical components. A low-power, linear driver is critical to achieving system level performance in these modules, the company says.

“We are proud to offer the industry’s first linear EML driver for 400G applications,” said Ray Moroney, product manager at MACOM. “This further expands MACOM’s extensive portfolio of drivers for long haul, metro and data centre applications.”

The MAOM-003115 driver will be demonstrated by appointment at the OFC tradeshow in Los Angeles, California, from March 24-26, 2015.


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