US 11,054,579 B2
Method for making a self-aligned optical guide between an optical source and an optical fiber, and related kit
Olivier Soppera, Mulhouse (FR); Véronique Bardinal, Castelmaurou (FR); Frédéric Diot, Le Blanc Mesnil (FR); Thierry Camps, Toulouse (FR); Benjamin Reig, Toulouse (FR); Carole Ecoffet, Mulhouse (FR); Emmanuelle Daran, Pin-Balma (FR); and Jean-Baptiste Doucet, Toulouse (FR)
Assigned to CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); UNIVERSITE DE HAUTE ALSACE, Mulhouse (FR); and UNIVERSITE PAUL SABATIER TOULOUSE III, Toulouse (FR)
Appl. No. 16/62,095
Filed by CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); UNIVERSITE DE HAUTE ALSACE, Mulhouse (FR); and UNIVERSITE PAUL SABATIER TOULOUSE III, Toulouse (FR)
PCT Filed Dec. 16, 2016, PCT No. PCT/EP2016/081534
§ 371(c)(1), (2) Date Jun. 13, 2018,
PCT Pub. No. WO2017/103178, PCT Pub. Date Jun. 22, 2017.
Claims priority of application No. 15307046 (EP), filed on Dec. 17, 2015.
Prior Publication US 2020/0310032 A1, Oct. 1, 2020
Int. Cl. G02B 6/138 (2006.01); G02B 6/42 (2006.01); G03F 7/20 (2006.01)
CPC G02B 6/138 (2013.01) [G02B 6/4206 (2013.01); G02B 6/4212 (2013.01); G03F 7/2004 (2013.01); G03F 7/2012 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for making a self-aligned optical guide between an optical source producing a directional emission and an optical fiber comprising:
arranging the optical source and the optical fiber facing one another and defining an intermediate space between them, the optical source being configured to emit a first light having a first peak wavelength comprised between 700 nm and 1600 nm;
placing, in the intermediate space, a fluid guide forming composition in contact with the optical source and with the optical fiber, the guide forming composition comprising a first monomer, a first photoinitiator system able to activate the polymerization of the first monomer when illuminated with the first light, and a second photoinitiator system being able to activate the polymerization of the first monomer when illuminated with a second light having a second peak wavelength, the second photoinitiator system not interacting with the first photoinitiator system when the first photoinitiator system is illuminated with the first light, the difference between the first peak wavelength and the second peak wavelength being more than 100 nm;
injecting the first light in the guide forming composition from the optical source and/or from the optical fiber, to harden a central region of the optical guide by photopolymerization of the first monomer initiated by the first photoinitiator system, the central region connecting the optical source and the optical fiber; and
illuminating the guide forming composition with the second light to harden a peripheral region of the optical guide by photopolymerization of the first monomer initiated by the second photoinitiator system.