US 12,253,718 B2
Mid-infrared optical fibers with enhanced OH-diffusion resistance
Martin Bernier, Québec (CA); Réal Vallée, Québec (CA); Souleymane Toubou Bah, Québec (CA); Vincent Fortin, Québec (CA); Frédéric Maes, Québec (CA); and Yigit Ozan Aydin, Québec (CA)
Assigned to Université Laval, Quebec (CA)
Filed by Université Laval, Quebec (CA)
Filed on Nov. 6, 2023, as Appl. No. 18/502,350.
Application 18/502,350 is a division of application No. 16/919,874, filed on Jul. 2, 2020, granted, now 11,846,807.
Claims priority of provisional application 62/947,192, filed on Dec. 12, 2019.
Prior Publication US 2024/0069284 A1, Feb. 29, 2024
Int. Cl. G02B 6/26 (2006.01); H01S 3/067 (2006.01)
CPC G02B 6/262 (2013.01) [H01S 3/06716 (2013.01)] 54 Claims
OG exemplary drawing
 
1. An optical fiber product, comprising:
an optical fiber made of a fiber-optic material and configured for propagation of mid-infrared radiation toward a light-radiating endface of or coupled to the optical fiber; and
a diffusion barrier disposed on the light-radiating endface and configured for allowing the mid-infrared radiation emanating from the light-radiating endface to pass therethrough and for preventing OH diffusion therethrough toward the light-radiating endface, wherein the diffusion barrier comprises a thin-film coating.