The FIO-1901 series are flexible serial digital video To/From Fiber Optic converters for the Densité frames. The FIO-1901 series are designed for SD, HD and 3G serial video as well as compressed bit-streams (DVB-ASI). The series supports any data rate within the range of 19.4 Mbps to 2.97 Gbps and provides a reclocked serial digital video from 270Mbps to 2.97 Gbps. The FIO-1901 series offer five different configurations: Single or dual fiber Tx, single or dual fiber Rx and a bi-directional fiber Rx/Tx. The series is based on SFP modules that provide easy product maintenance and flexibility when multiple wavelengths are needed (as for CWDM). The SFP Modules are also hot-swappable. The FIO-1901 can be installed in the same chassis as a series of interface modules, providing a wide variety of video, audio and data conversion and multiplexing functions.

The FIO-1901-RR version incorporates dual optical receivers, and is also available in a WDM version for use with a single optical fiber.