Huber+Suhner Cube Optics unveils ROSA for 100GBase CFP4/QSFP28-LR4 optical transceivers

Last week at OFC 2015 in Los Angeles, Huber+Suhner Cube Optics AG demonstrated an ultra-compact integrated multi-lambda 100-Gbps receiver optical subassembly (ROSA) that is compatible with CFP4 and QSPF28 optical transceiver form factors. The ROSA measures 18x6.5x6 mm with a typical power consumption of 330 mW.

The ROSA incorporates an optical demultiplexer and integrates four PIN detectors and an array quad trans-impedance amplifier (TIA). It is designed to receive four optical signals multiplexed using the 1295.56, 1300.05, 1304.58, and 1309.14 nm channels of the LAN WDM IEEE grid, each propagating at 28.3 Gbps. After demultiplexing, opto-electronic conversion, and amplification, the ROSA outputs four lanes of electrical data of up to 28.3 Gbps each.

The core optical element, which comprises a directly reflecting multiplexing architecture, draws on Cube Optics' intellectual property and the company's fabrication expertise. (Huber + Suhner purchased the company last fall.) The ROSA features typical OMA sensitivities of -11.5 dBm for a BER of 10^-12.

"100GbE is quickly being deployed to enable network backbones to deal with the increasing bandwidth demand while meeting expectations for uptime," said John D'Ambrosia, Ethernet Alliance chairman and IEEE 802.3bs Task Force chair. "Continuing development of the underlying optical technologies, such as H+S Cube Optics AG's multi-lambda 100G ROSA, provides the industry with an expanding array of tools to meet network needs, and enable the next generation of 100GbE optical modules."

The ROSA modules are currently available for customer sampling. Volume production will start in Q3 2015.

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