Cube Optics releases 4x25-Gbps ROSA for 100 Gbps

SEPTEMBER 17, 2009 -- Cube Optics AG has unveiled what it describes as the world’s first integrated multi-lambda 100-Gbps receiver optical subassemblies (ROSAs).

The ROSA optically demultiplexes four LAN WDM channels operating at 25 Gbps. The optical signals are converted to electrical information via a set of integrated detectors. The electrical signals are then further processed by suitable TIAs to produce a four-lane electrical data output at rates of up to 4x28 Gbps.

The IEEE 802.3ba Ethernet Task Force is currently in the process of establishing new standards for 40 Gbps and 100 Gbps fiber-optic transceivers. The task force has focused on multiple 25-Gbps data streams to realize transmission with the desired 100 Gbps data throughput.

The Cube Optics’ approach integrates four PIN detectors and four corresponding laser diodes including the associated four-channel miniature optical multiplexing function. The device features small size (15.2x12x6.5 mm) and power consumption of typically 250 mW per channel. The ROSA features OMA sensitivities of “well below” -8.25 dBm. The optical demultiplexer uses the 1295.56-, 1300.05-, 1304.58-, 1309.14-nm channels of the LAN WDM IEEE grid.

The core optical element, comprising a compact directly reflecting multiplexing architecture, draws on Cube Optics’ intellectual property and the company's fabrication expertise.

The 100-Gbps LAN WDM ROSA will be on display at ECOC 2009 in Vienna. The standalone ROSA modules are currently available in demonstrations and assessment volumes and will be enter volume production in 2010.

Cube Optic adds it is “well on its way” toward the development of a complementary transmitter optical subassembly (TOSA).

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