BERLIN, Germany, May 30, 2012 VI Systems GmbH, a leader in ultra-high speed optical engines for data communications, introduces the proprietary T25-850 transmitter optical subassembly (TOSA) and the R25-850 receiver optical subassembly (ROSA) for data rates of up to 28 Gbit/s. The receiver includes a PIN photodetector within a spectral range of 700-890 nm and a transimpedance amplifier (TIA) in an extremely compact high frequency TO-style micropackage. The transmitter combines the proprietary VI Systems ultrahigh-speed 850nm VCSEL (Vertical Cavity Surface Emitting Laser) and driver IC. The transmitter and receiver TO-style package is coupled with a 50 um multi- mode fiber. The dimensions of the assemblies are below 6 mm in diameter matching SFP transceivers. The overall length including a plastic boot for strain relief of the optical fiber is 40 mm. Complimentary high-frequency testboards are available.

The T25-850 transmitter is specified to operate over a temperature range from 0 to +85 degree C. The supply voltage is 3.3V. The TOSA features a low power consumption of only 130mW. The T25-850 includes the latest generation of ultrahigh-speed VCSEL from VI Systems which feature an optimized epitaxial design.

The R25-850 receiver supply voltage is + 3.3V. It features a low power consumption of only 110mW. The ROSA includes a VIS photodetector chip in combination with the latest generation of transimpedance amplifier chip from VI Systems to ensure maximum performance at low power consumption.  

Target applications are short reach optical transceiver modules used in Storage Area Networks and in the computer industry. The Optical Internetworking Forum (OIF) defined the first interfaces to operate at data rates of 25 and 28 Gbit/s. Further standards for serial transmission at ultrahigh-speed data rates of 26-56 Gb/s are currently being developed within Fiber Channel FC32, OIF and the Ethernet IEEE 40/100 Gbit/s and the Infiniband EDR.

Information about VI-Systems is available on the web at www.v-i-systems.com.