Optical-to-Electrical Converters

Tektronix, Inc. announced the availability of its new line of optical-to-electrical (O/E) converters for use in conjunction with Tektronix sampling oscilloscopes. The O/E converters provide added functionality to Tektronix CSA803C and 11801C communications signal analyzers for SONET/SDH 2.488 Gb/s transmission signals.

The complete package of internal communication templates/masks and automatic measurements within the 11800C/CSA803C oscilloscopes, coupled with the new set of O/E converters, enables users to analyze SONET/SDH 2.488 Gb/s optical transmission systems. These systems are the foundation for high-speed core telecommunication networks.

The new SD-44 15 GHz O/E converter is optimized for characterizing the pulse shape of optical signals up to 2.488 Gb/s, where frequency components of five times the data rate (greater than 12.5 GHz) are required to be analyzed. The conversion gain of 35 mV/mW and noise floor of 15 pW per root Hertz provide enhanced performance over existing high-bandwidth O/E converters.

The ORR24 is an amplified 2.0-GHz O/E converter with a built-in 4th-order Bessel-Thompson frequency response, as required by the ITU-T G.957 standard for a compliant SONET/SDH 2.488 Gb/s reference receiver. The low noise, low aberration and DC-coupled design of the ORR24 ensure accurate and repeatable extinction-ratio measurements. The ORR24 is calibrated at 1310 nm and 1550 nm wavelengths, and includes a frequency-response graph that certifies a controlled frequency response out to twice the data rate (5 GHz).

Tektronix, P.O. Box 5000, Beaverton Oregon 97077. Phone: 800-426-2200; Fax: 413-448-8002.