Abstract: An optical waveguide system and an electronic device are disclosed. The optical waveguide system comprises: a waveguide; an input coupler, coupling a light including a first and a second color component into the waveguide; and an output coupler, including: a first polarization color filter, converting the first color component of a first polarization state into the first color component of a second polarization state without changing the second color component of the first polarization state; a first polarization volume grating, coupling the first color component out of the waveguide; a second polarization color filter, converting the second color component of the first polarization state into the second color component of the second polarization state without changing the first color component of the first polarization state; a second polarization volume grating, coupling the second color component out of the waveguide.

Abstract: An optical display system and an augmented reality electronic device are disclosed. The optical display system comprises: a waveguide; an input coupler, provided at the input end of the waveguide and couples an image light into it; and a two-dimensional grating, provided at the output end of waveguide. The waveguide delivers the image light to the two-dimensional grating, which performs pupil expansion on the image light and out-couples the expanded image light. The two-dimensional grating has rhombus lattices. Unit cells of the two-dimensional grating are un-symmetric along respective axes parallel with a propagation direction of the image light incident onto the two-dimensional grating, from a top view of the two-dimensional grating. The unit cells are oriented with the propagation direction of the image light and each of the unit cells has at least two vertexes at its end side.

Abstract: An optical waveguide system with angle-multiplexing polarization volume gratings and an electronic device are disclosed. The system comprises: a waveguide; an input coupler coupling a combined image light for a combined image into the waveguide; and an output coupler coupling the combined image light out of the waveguide. The combined image light includes a first image light for a first image and a second image light for a second image, which are combined to from the combined image. The first image light and the second image light have different polarizations. The output coupler includes first and second output polarization volume gratings, which are optimized for different polarizations, respectively, wherein the first output polarization volume grating couples the first image light out of the waveguide, and the second output polarization volume grating couples the second image light out of the waveguide.

Abstract: A method of conical anisotropic rigorous coupled wave analysis for grating and a computing device are disclosed.

Abstract: A polarization volume grating, an optical waveguide system and an electronic device are disclosed. Parameters of the polarization volume grating satisfy with those derived by performing a multivariable optimization algorithm on a merit function of ƒk(d1,?1,d2,?2, . . . , dm,?m,d)=[1??1(?,?)]2, wherein the parameters include d1,?1,d2,?2, . . . , dm,?m, where m=1, 2, 3, . . . , and d, m is the number of layers of the polarization volume grating, dm is a thickness of mth layer, ?m is a twist angle in mth layer, and d is a period of the polarization volume grating, k represents a central wavelength on which the multivariable optimization algorithm is performed, ? represents a polar angle of an incident light, ? represents an azimuth angle of the incident light, and ?1(?,?) represents a first-order diffraction efficiency of the polarization volume grating.

Abstract: An optical waveguide system and an electronic device are disclosed. The optical waveguide system comprises: a waveguide; an input coupler, coupling a light including a first and a second color component into the waveguide; and an output coupler, including: a first polarization color filter, converting the first color component of a first polarization state into the first color component of a second polarization state without changing the second color component of the first polarization state; a first polarization volume grating, coupling the first color component out of the waveguide; a second polarization color filter, converting the second color component of the first polarization state into the second color component of the second polarization state without changing the first color component of the first polarization state; a second polarization volume grating, coupling the second color component out of the waveguide.

Abstract: A polarization volume grating, an optical waveguide system and an electronic device are disclosed. Parameters of the polarization volume grating satisfy with those derived by performing a multivariable optimization algorithm on a merit function of ƒk(d1,?1,d2,?2, . . . , dm,?m,d)=[1?n1(?,?)]2, wherein the parameters include d1,?1,d2,?2, . . . , dm,?m, where m=1,2,3, . . . , and d, m is the number of layers of the polarization volume grating, dm is a thickness of mth layer, ?m is a twist angle in mth layer, and d is a period of the polarization volume grating, k represents a central wavelength on which the multivariable optimization algorithm is performed, ? represents a polar angle of an incident light, ? represents an azimuth angle of the incident light, and n1(?,?) represents a first-order diffraction efficiency of the polarization. volume grating.

Abstract: An optical display system and an augmented reality electronic device are disclosed. The optical display system comprises: a waveguide; an input coupler, provided at the input end of the waveguide and couples an image light into it; and a two-dimensional grating, provided at the output end of waveguide. The waveguide delivers the image light to the two-dimensional grating, which performs pupil expansion on the image light and out-couples the expanded image light. The two-dimensional grating has rhombus lattices. Unit cells of the two-dimensional grating are un-symmetric along respective axes parallel with a propagation direction of the image light incident onto the two-dimensional grating, from a top view of the two-dimensional grating. The unit cells are oriented with the propagation direction of the image light and each of the unit cells has at least two vertexes at its end side.

Abstract: An optical waveguide system and an electronic device are disclosed. The system comprises: a waveguide; an input coupler coupling a light into the waveguide; and an output coupler, wherein the input coupler includes a right portion and a left portion, wherein the right portion includes stacked first and second polarization volume gratings, the left portion includes stacked third and fourth polarization volume gratings. The first and fourth polarization volume gratings are polarization volume gratings optimized for a right-hand-side field of view of the light, and the third and second polarization volume gratings are polarization volume gratings optimized for a lefthand-side field of view of the light.