Inter-core crosstalk for future Space Division Multiplexing Networks and Optical Sensor Devices (INSTILL)


2021 - 2024

Principal investigator

  David Barrera Vilar

In this project we intend to develop new and disruptive devices based on inter-core crosstalk produced by the inscription of fiber diffraction gratings in the cores of a Multicore Optical Fiber (MCF) to improve the performance of Space Division Multiplexing (SDM) amplifiers, Reconfigurable Add-Drop Optical Multiplexers and optical sensors.
Tilted Fibre Bragg Gratings (TFBG) and Long Period Grating (LPG) in MCFs have shown that it is possible to deliberately and locally increase inter-core crosstalk in MCFs to transfer light from one core to another in a specific wavelength range. This project will study the optimization of the properties of these gratings and the modification of the fiber structure to increase this effect and proposes novel schemes to use this phenomenon in the design of optical devices for SDM networks and optical sensors. In particular, we propose to use inter-core crosstalk to implement a new injection scheme of the pumping signal in a distributed way. This scheme can contribute to improve the performance of SDM amplifiers, avoid current limitations, and increase the maximum detection range of the distributed optical sensors. Another application of this technology that will be explored in this project is the use of inter-core crosstalk as a mechanism to implement distributed optical sensors that can simplify the current interrogation schemes.
PID2020-120071RJ-I00 Project funded by MCIN/AEI/10.13039/501100011033.

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