Mitsubishi Electric Europe offers laser modules for 10-and 8-Gbit/sec SFP+

15 JULY, 2008 -- Using its new transmitter optical sub assembly (TOSA) series, Mitsubishi Electric (search for Mitsubishi Electric) has developed four 1300-nm laser modules for optical transmission at speeds of 10 and 8 Gbits/sec.

Each module fits into an enhanced 8.5- and 10-Gbit/sec SFP+ module measuring 13.3x13.4x56.5 mm. The new devices use a flexible printed circuit (FPC) for the electrical interface between the modules and transceivers. As this FPC is 80 percent smaller than comparable approaches, the new module can be installed in SFP+ compliant transceivers while simultaneously keeping the LC receptacle package of the 10-Gb/s miniature device (XMD-MSA), Mitsubishi Electric Europe says.

By using distributed feedback laser diodes (DFB-LDs) for medium and long-distance transmissions and Fabry-Perot laser diodes (FP-LD) for short-distance communications, the new product can operate at currents of just 70 mA, which is 20 percent lower than the current consumed by previous modules. This leads to a decrease in power consumption as well as to an increase in operating temperature to 90 degrees C, which is 10°C higher than before.

With these features the new TOSA series (FU-456RDF and FU-466RLD for 10G and FU-442RDF and FU-443RLD for 8.5G transmission) from Mitsubishi Electric enables the design of small transceiver systems. These operate with low power consumption over a wider temperature range -- essential features to achieve high-density installations in fiber based applications like metro area networks and high-speed storage area networks, says the company.

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