Devices and methods for polarization splitting

Timo Aalto

Devices and methods for polarization splitting

Research output: Patent › Patent

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.

Patent family as of 19.7.2022
CN113167967 A20210723CN20198007935020191031
EP3874307 A120210908EP2019088081620191031
FI129694 B20220630FI2018000593220181102
FI20185932 A20200503FI2018000593220181102
US2022003934 AA20220106US2021029077920191031
WO20089530 A120200507WO2019FI5077720191031

Link to current patent family on right

Original language	English
Patent number	FI20185932
IPC	G02F 1/ 225 A I
Priority date	2/11/18
Publication status	Published - 3 May 2020
MoE publication type	H1 Granted patent

Cite this

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title = "Devices and methods for polarization splitting",

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.Patent family as of 19.7.2022CN113167967 A20210723CN20198007935020191031 EP3874307 A120210908EP2019088081620191031 FI129694 B20220630FI2018000593220181102 FI20185932 A20200503FI2018000593220181102 US2022003934 AA20220106US2021029077920191031 WO20089530 A120200507WO2019FI5077720191031Link to current patent family on right ",

author = "Timo Aalto",

year = "2020",

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language = "English",

type = "Patent",

note = "FI20185932; G02F 1/ 225 A I",

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PY - 2020/5/3

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N2 - 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.Patent family as of 19.7.2022CN113167967 A20210723CN20198007935020191031 EP3874307 A120210908EP2019088081620191031 FI129694 B20220630FI2018000593220181102 FI20185932 A20200503FI2018000593220181102 US2022003934 AA20220106US2021029077920191031 WO20089530 A120200507WO2019FI5077720191031Link to current patent family on right

AB - 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.Patent family as of 19.7.2022CN113167967 A20210723CN20198007935020191031 EP3874307 A120210908EP2019088081620191031 FI129694 B20220630FI2018000593220181102 FI20185932 A20200503FI2018000593220181102 US2022003934 AA20220106US2021029077920191031 WO20089530 A120200507WO2019FI5077720191031Link to current patent family on right

UR - https://worldwide.espacenet.com/patent/search/family/070462945/publication/FI129694B?q=FI129694

M3 - Patent

M1 - FI20185932

ER -

Devices and methods for polarization splitting

Abstract

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