TDR20 Opto-Electronics OTDR Signal Processor

The Opto-Electronics Millimeter Resolution OTDR System is a unique instrument with special capabilities not found in standard OTDRs. Specifically, the instrument measures time of flight of very short optical pulses with picosecond precision, allowing for distance resolutions of less than one millimeter. This is coupled with a modular construction which allows for operation in transmission or reflection at a wide range of wavelengths into any fiber size. In short, each instrument can be configured to the operator's requirements and can be reconfigured at will by the operator.

The millimeter resolution capabilities of the instrument do not restrict the operating distance or the dynamic range. On the contrary, operating distances up to 33 kilometers in single mode fiber are realistic. In multimode fiber the operating distance is restricted to a few kilometers by modal dispersion. Free space measurements with equally high resolution are also possible. Dynamic range varies with choice of modules and wavelength but by utilizing the best combination of wavelength and detection system dynamic ranges in excess of 100 dB can be achieved in transmission.