US 12,483,330 B2
Full control of polarisation in fibre delivered light for harsh environments
Louis Gaudreau, Ottawa (CA); Jason Phoenix, Keene (CA); Sergei Studenikin, Orleans (CA); Marek Korkusinski, Ottawa (CA); Alex Bogan, Ottawa (CA); Andrew Sachrajda, Ottawa (CA); Robin Williams, Ottawa (CA); and Piotr Zawadzki, Ottawa (CA)
Assigned to NATIONAL RESEARCH COUNCIL OF CANADA, Ottawa (CA)
Appl. No. 17/923,387
Filed by National Research Council of Canada, Ottawa (CA)
PCT Filed May 5, 2021, PCT No. PCT/CA2021/050631
§ 371(c)(1), (2) Date Nov. 4, 2022,
PCT Pub. No. WO2021/223027, PCT Pub. Date Nov. 11, 2021.
Claims priority of provisional application 63/111,207, filed on Nov. 9, 2020.
Claims priority of provisional application 63/020,637, filed on May 6, 2020.
Prior Publication US 2023/0077503 A1, Mar. 16, 2023
Int. Cl. H04B 10/2569 (2013.01); H04B 10/2525 (2013.01)
CPC H04B 10/2569 (2013.01) [H04B 10/2525 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of transmitting information via a transmission path, the method comprising the steps of:
generating a model of the transmission path comprising the steps of:
transmitting at least one photon of a known polarization state via a fibre; and
characterizing the fibre by determining at least one depolarization loss caused by the fibre by at least:
detecting the at least one photon outputted by the fibre;
determining the intensity of the outputted at least one photon;
measuring the output polarization state of the at least one photon to generate at least one polarization map;
determining characteristics of the transmission path by fitting the output polarization state of the at least one photon to the model using a genetic algorithm program; and
compensating for polarization altering effects of the fibre by at least:
determining an orientation angle of at least one optical component for introduction into the transmission path for compensating for polarization altering effects of the fibre.