US 11,982,836 B2
Heating atom-vapor cell using an optical fiber
Bruno Sfez, Yavne (IL); Yoav Sintov, Yavne (IL); and Shaul Pearl, Yavne (IL)
Assigned to Soreq Nuclear Research Center, Yavne (IL)
Appl. No. 17/906,075
Filed by Soreq Nuclear Research Center, Yavne (IL)
PCT Filed Mar. 23, 2021, PCT No. PCT/IB2021/052394
§ 371(c)(1), (2) Date Sep. 12, 2022,
PCT Pub. No. WO2021/198846, PCT Pub. Date Oct. 7, 2021.
Claims priority of provisional application 63/001,356, filed on Mar. 29, 2020.
Prior Publication US 2023/0119397 A1, Apr. 20, 2023
Int. Cl. G02B 6/036 (2006.01); G02B 6/02 (2006.01)
CPC G02B 6/02395 (2013.01) [G02B 6/02038 (2013.01); G02B 6/03694 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An optical fiber heating device comprising:
a heat producing optical fiber wrapped around a cell filled with an atom vapor, wherein said fiber comprises a core, an inner clad and an outer clad that encircles said inner clad and forms an optical waveguide, wherein light propagates in said inner clad, and wherein said core, or a layer encircling said core located in said inner clad, is doped with an absorbing dopant, such that a light beam propagating in said inner clad overlaps and is absorbed by said core or said layer and produces heat.