Infineon Technologies has announced what it says is the industry's first intelligent laser diode driver (iLDD) targeting small form factor (SFF) and small form pluggable (SFP) optical transceiver applications for fibre-based data storage and telecom systems. The single-chip solution integrates the laser diode driver (LDD), the post amplifier (PA) and the diagnostic unit (DU).
The digital DU intelligently controls the performance of the entire optical module over the full data-rate range from 155 Mbps up to 4,25 Gbps and keeps track of laser safety regulations. Benefits to optical module manufacturers using the single-chip solution include lower cost, decreased power consumption and an improved error-rate.
The rapid growth of Internet-based applications such as e-mail, e-commerce, digital imaging or networked databases demands decentralised data storage centres (storage area networks or SANs) for disaster resiliency and to meet legislative requirements with regards to data safety. Hence the increased storage transport and need for fibre channel (FC) interfaces that seamlessly and cost efficiently interconnect distributed SAN sites for enterprise customers. According to market research firm, iSuppli, the market for Gigabit Ethernet, Fibre Channel and SONET/SDH transceivers is expected to grow from US-dollar 1,2 billion in 2003 to 3,9 billion in 2008 with a compound annual growth rate of approximately 26%.
In addition to supporting data rates to 4,25 Gbps, the iLDD offers a high input sensitivity of 4 mV and is capable of driving vertical cavity surface emitting laser (VCSEL) as well as edge-emitting laser. The device operates from a single supply voltage with extended range from 2,85 V to 3,63 V and has a very low power consumption of 200 mW.
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