The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2023
Filed:
Oct. 31, 2019
Teknologian Tutkimuskeskus Vtt Oy, Espoo, FI;
Timo Aalto, Espoo, FI;
Teknologian tutkimuskeskus VTT Oy, Espoo, FI;
Abstract
The invention relates to devices and methods for polarization splitting, where a first optical coupler having at least one input port which receives an input light beam, and at least two output ports at which said light beam, is split into at least a first and a second arms at a first end of said arms. At least one total internal reflection mirror is coupled to the second arm for inducing polarization-dependent phase shifts to the light beam propagating in the second arm, and a polarization-dependent phase difference between the second and the first arm. A second optical coupler having input ports is coupled to the second and opposite ends of the arms. The second coupler has at least one first output port at which light is coupled from said arms, so that the polarization-dependent phase shift of the at least one total internal reflection mirror causes polarization-dependent coupling of light from said input port to said output port.