Mitsubishi Intros Direct-Modulated DFB

TOKYO -- Mitsubishi Electric Corporation (TSE: 6503) has successfully developed a direct-modulated 10Gb/s DFB-LD that will be used for optical telecommunications. This DFB has cleared the OC-192 mask criterion related to communication transmission quality and will satisfactorily transmit at 10Gb/s in conditions up to, and including, 120 deg C without a cooling element.

Adopting this uncooled DFB Laser enables the installation of a large capacity data communication network at low cost, with optical transmission capable of high speeds up to 10Gb/s. Furthermore, its low electric power consumption makes it ideal for an internet-type network such as the metro-network, which combines high speed initiation FTTH (Fiber To The Home) and intranet LAN (Local Area Network) with backbone lines.

The optical transmitters with smaller size and lower power consumption will meet the strong demand of increasing internet-traffic, and the uncooled 10Gb/s direct-modulated DFB-LDs are the key devices for current and next generation optical transmitters such as XENPAK and XFP. Mitsubishi Electric Corporation has already released the uncooled DFB-LDs for 85 deg C operation, in which an InGaAsP active layer is adopted. Meeting the request for the smaller size transmitters with smaller size that can operate without a cooling element at higher temperatures was the obvious next step.

Mitsubishi Electric Corp.