Hamamatsu launches 10-Gb-compatible ROSAs for design into XFP transceivers

April 11, 2005 Bridgewater, NJ -- Hamamatsu's G9911-14/-54 receiver optical sub-assemblies (ROSAs) are compatible with 10-Gbit/sec miniature devices (XMD), and designed for use in XFP transceivers, as well as SONET/SDH network applications.

The ROSAs are Indium Gallium Arsenide (InGaAs) PIN photodiodes with typical sensitivity ranging from +2 dBm to -20 dBm at 1.55 um. The devices support high trans-impedance of 6 kOhms (typical) and low optical return loss of 35 dB (typical) at both 1.31 um and 1.55 um. Typical response is 0.85 A/W at 1.31 um and 0.9 A/W at 1.55 um, with typical dark current of 0.05 nA.

According to the manufacturer, requiring only 3.3 V, the low-power devices provide flexibility in the design of XFP transceivers. The G9911-14 has a pin design, while the G9911-54 incorporates a flex board interface for space-restricted designs.

The company is a manufacturer of devices for generation and measurement of infrared, visible, and ultraviolet light. Its products include photodiodes, photomultiplier tubes, scientific light sources, infrared detectors, photoconductive cells, and imaging devices.