OTDR Distance Scale Artefact
The artefact is based on a recirculating optical delay line, which will generate a number of calibration features along the distance scale of an OTDR. A typical OTDR trace can be seen below. A 2 km lead-in fibre together with a 12 km loop will provide features every 6 km out to about 40 km. Other combinations of lead-in and loop fibre lengths can be supplied on request. A multimode version of the distance scale artefact is also available.
Specification
| Fibre Type | Lead-in Fibre Length | Calibration Uncertainty | Recirculating Loop Fibre Length | Calibration Uncertainty | Measurement Wavelength |
| Single-mode | ~2 200 m | ± 0.1 m | ~13 000 m | ± 0.3 m | 1310 and 1550 nm |
| Multimode | ~1 000 m | ± 0.3 m | ~4 400 m | ± 0.5 m | 850 and 1300 nm |
The device is packaged into one box, fitted with an FC/PC terminated patch lead for direct connection to the OTDR.
A copy of a typical Calibration Certificate is available to download.
Contact
Customer Service tel: +44 20 8943 8637
E-mail: fibreoptics_enquiries@npl.co.uk
Last Updated: 25 Mar 2010
Created: 23 Jul 2007