Work Package 3

Design, synthesis and characterisation of special glasses for photonic devices

Design, synthesis and characterisation of special glasses suitable for photonic devices:  special glasses used as key components of various devices in the fields of optics, electronics, and opto-electronics are often not silicate glasses: although they are not generally applied to mass production due to the high cost of raw materials and their rather inferior chemical durability, they do show unique properties that cannot be obtained for silicate glasses. The glass matrices will be especially designed and prepared according to the requested application: active or passive waveguides, waveguides containing optical gratings, photosensitive glasses and glasses for poling. Other activities include advanced glass processing: laser direct writing of waveguides on glass,  and amorphous thin films by means of magnetron RF sputtering of glassy targets.

WORK PACKAGE LEADER: CNRS

Description of work

Task 3.1 Synthesis and characterization of soft glasses (Task leader CNRS, other participants POLITO, nLIGHT)

The activity will include fabrication and characterization of telluride and chalcogenide glasses for novel application in photonics.

T3.2 Preparation of optical fibres (Task leader CNRS, other participants POLITO, nLIGHT)

The activity will include the fabrication of optical fibres, Photonic Crystal Fibres and waveguides.

T3.3 Nanocluster doped glasses, glass poling and related devices (Task leader POLITO, other participants CNRS, COLOR)

Metal nanocluster doped silica thin films will be deposited by sputtering on planar waveguides or fibres to obtain innovative Surface Plasmon Resonance sensors. Sensing ability will be tested in transmission and reflection mode. The role of metal nanoclusters in poling of silica thin films will be investigated by thermal poling. Poled samples will be characterized in terms of non-linear properties.

T3.4 Optical devices based on special glasses (Task leader CNRS, other participants POLITO, nLIGHT)

The special glasses used as key components of various devices in the fields of optics, electronics, and opto-electronics are often not silicate glasses: although they are not generally applied to mass production due to the high cost of raw materials and their rather inferior chemical durability, they do show unique properties that cannot be obtained for silicate glasses. The aim of this task is to define the composition of telluride and chalcogenide glasses for sensors, lasers, amplifiers, e.g. glass fibre optical sensors for the early diagnosis of pathologies.

Recruited researchers to be involved (ESR= early stage researcher, ER= experienced researcher):

ESR2 will study “Special glasses for photonic devices (including fibres, nanocluster doping and poling)” and will be involved in T3.2 and T3.3

ESR8 will study the “Synthesis and characterisation of soft glasses and fabrication and characterisation of glass optical” and will be involved in T3.1 and T3.2.

ESR9 will study the “Development of optical sensors for early  diagnosis of pathologies” and will be involved in T3.4

ER3 will study the “Development of optical devices based on special glasses” and will be involved in T3.4


Chalcogenide glasses (Centre National De La Recherche Scientifique)

Chalcogenide glasses and fibres (Centre National De La Recherche Scientifique)

Glass fibre drawing tower and glass fibre (Politecnico di Torino)

Glass fibres (Politecnico di Torino)