Work description
- Conception:
Commercial softwares using numerical techniques (FD, FEM, BPM, BEP, PWE, FDTD), computing station and cluster are used for designing circuits layouts.
- Technology:
Different fabrication processes are studied depending on the material used for circuit elaboration.
Polymers materials are directly photopatternable and present a good transmission in the visible and near infrared ranges.
Chalcogenide glasses transmit wavelength from 1μm up to 16μm; they are patterned using photolithography followed by ionic etching. The work on this technology is realised in collaboration with the ChV team of the ICGM physico/chemistry institute.
Some tests have been carried out using Silicon-On-Insulator technology.
Direct writing and photolithographic steps are managed using laser writing system which allows fast prototyping of new designs.
- Characterisation:
Final tests are carried out thanks to a fiber alignment bench equiped with visible to mid-infrared sources, samples thermal regulation system, imaging apparatus, optical spectrum analyzer.
Results:
Numerous performing circuits have been developped: high division compact MMI power splitters, StarCoupler-AWG wavelength multiplexers for CWDM telecom applications, MMI sensors for relative humiditiy and gaz measurements, MMI-AWG & evanescent couplers thermooptic switches, SNOM microscopy probes, ...
Video
You can watch a video presenting a simple fabrication process based on organomineral materials, an optical characterisation and a circuit conception example.
Publications
You can consult the publications list relative to this work.