What is it about?
This paper proposes and demonstrates a new technique for measuring optical fibre chromatic dispersion based on incoherent heterodyne interferometry, which was originally developed for characterizing optical resonators. The free spectral range of the ring resonators containing a fibre under test is measured as a function of wavelength, from which group delay and chromatic dispersion can be estimated.
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Why is it important?
The technique will be used for characterizing various types of optical fibres for communication and sensing applications. As compared with the existing methods, the technique has the advantage of simple configuration and procedure.
Perspectives
Other than the chromatic dispersion measurement, the technique will be applicable to various sensing applications, because it offers precise characterization of optical resonators.
Dr Hidemi Tsuchida
National Institute of Advanced Industrial Science and Technology
Read the Original
This page is a summary of: Optical fibre chromatic dispersion measurement using incoherent heterodyne interferometry, Electronics Letters, April 2016, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/el.2015.4480.
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