Chat with us, powered by LiveChat

Optical Frequency Domain Reflectometry

Optical Frequency Domain Reflectometry (OFDR) is a special technology which is used for the analysis of optical light paths and reflection characteristics in optical fibers and components.

Optical Frequency Domain Reflectometry (OFDR) is a special technology which is used for the analysis of optical light paths and reflection characteristics in optical fibers and components. Unlike Optical Time Domain Reflectometry (OTDR) OFDR works in the frequency domain using continuous wave (CW) light sources which enables higher signal to noise ratios. In a typical OFDR system a tunable laser source is swept over a certain wavelength band (e.g. 1535nm-1565nm). The light is then sent into a fiber and consequently brought into interference with a reference arm. From the Fourier transformation of the resulting signal the spatial distribution of the reflected light is measured. The reflection can results from the intrinsic Rayleigh scattering of the glass or can be enlarged by in fiber, low reflective, continuously written Fiber Bragg Gratings (FBG). The measurement of strain and temperature is done by tracking the changes of the Rayleigh or FBG reflection pattern or peaks. The advantage of using FBGs over Rayleigh is an increased signal to noise ratio which leads to higher measurement speeds. With OFDR measurement technology it is possible to measure strain or temperature in sub-Millimeter resolution over several 10´s of meters.

Sign up for newsletter
Contact us

* These fields are required.

How we use your information

We are committed to respecting your privacy and protecting your personal information and will always treat it with the upmost care. You can find out how we handle your data and all the ways we use it to provide you with a better service in our Privacy Statement.

By submitting this form, you consent to the use of your data in accordance with our Privacy Statement.