What is it about?
We present a novel imaging protocol to observe the mode-dependant wavelength-to-time mapping in a few mode fibre using a TCSPC SPAD array. This will allow an easy characterisation of the mode behaviour in few mode fibres such as group velocity dispersion, relative modal delay and effective refractive index differences of the closest mode groups.
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Why is it important?
The direct observation of mode evolution will find applications in multimode time-stretch imaging, with specific applications in biomedical imaging and optical telecommunication. The findings of this research will open a new route towards the realisation of efficient fibre based novel imaging systems.
Perspectives
I hope the article will find considerable attention in the entire research community as the the research will open a range of applications in the photonic world.
Harikumar Chandrasekharan
Heriot-Watt University
Read the Original
This page is a summary of: Observing mode-dependent wavelength-to-time mapping in few-mode fibers using a single-photon detector array, APL Photonics, June 2020, American Institute of Physics,
DOI: 10.1063/5.0006983.
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