Chromatic dispersion measurement using photonic microwave technique

We have proposed a new chromatic dispersion measurement technique, both for optical fiber and WDM components, based on photonic microwave technology. The technique only requires low frequency scalar network analyzer, modulator and photodetector. Experimental results have demonstrated that this technique has the advantages of low cost, simplicity and high accuracy. The proposed method can also be used in a reverse way: from prior known values of relative group delay of the fiber or FBG, we can implement the tunable microwave photonic notch filter, which has a variety of applications in photonic signal processing, by tuning the output wavelength of the tunable laser.