1. An optical waveguide that includes a core formed of a photocured resin,
wherein the core includes a linear portion, a branch portion linked to an end of the linear portion, and at least two branches extending from the branch portion.
2. The optical waveguide according to claim 1, wherein the other end of the linear portion of the core is connected to an optical fiber.
3. A method for manufacturing an optical waveguide, comprising:
connecting an optical fiber to an uncured photocurable resin, and irradiating the photocurable resin with curing light that is introduced through the optical fiber at a higher mode and has a wavelength at which the photocurable resin can be cured, thereby forming a core that includes a linear portion, a branch portion linked to the linear portion, and at least two branches extending from the branch portion.
4. The method for manufacturing an optical waveguide according to claim 3, wherein the photocurable resin before being irradiated with the curing light comprises a photocurable resin gel.
5. The method for manufacturing an optical waveguide according to claim 3, wherein the curing light is introduced at both the higher mode and a lower mode.
6. The method for manufacturing an optical waveguide according to claim 4, wherein the curing light is introduced at both the higher mode and a lower mode.
7. The method for manufacturing an optical waveguide according to claim 5, wherein the lower mode comprises an LP01 mode, and the ratio of the light intensity of the higher mode to the light intensity of the LP01 mode is controlled to adjust the length of the linear portion.
8. The method for manufacturing an optical waveguide according to claim 6, wherein lower mode comprises an LP01 mode, and the ratio of the light intensity of the higher mode to the light intensity of the LP01 mode is controlled to adjust the length of the linear portion.
9. The method for manufacturing an optical waveguide according to claim 3, wherein the light intensity of the curing light is controlled to adjust the length of the linear portion.
10. The method for manufacturing an optical waveguide according to claim 4, wherein the light intensity of the curing light is controlled to adjust the length of the linear portion.
11. The method for manufacturing an optical waveguide according to claim 5, wherein the light intensity of the curing light is controlled to adjust the length of the linear portion.
12. The method for manufacturing an optical waveguide according to claim 6, wherein the light intensity of the curing light is controlled to adjust the length of the linear portion.
13. The method for manufacturing an optical waveguide according to claim 7, wherein the light intensity of the curing light is controlled to adjust the length of the linear portion.
14. The method for manufacturing an optical waveguide according to claim 3, wherein the optical fiber comprises a polarization-maintaining fiber, and the polarization direction of the curing light emitted from the optical fiber is adjusted to be a predetermined direction to control the branching direction at the branch portion.
15. The method for manufacturing an optical waveguide according to claim 4, wherein the optical fiber comprises a polarization-maintaining fiber, and the polarization direction of the curing light emitted from the optical fiber is adjusted to be a predetermined direction to control the branching direction at the branch portion.
16. The method for manufacturing an optical waveguide according to claim 5, wherein the optical fiber comprises a polarization-maintaining fiber, and the polarization direction of the curing light emitted from the optical fiber is adjusted to be a predetermined direction to control the branching direction at the branch portion.
17. The method for manufacturing an optical waveguide according to claim 7, wherein the optical fiber comprises a polarization-maintaining fiber, and the polarization direction of the curing light emitted from the optical fiber is adjusted to be a predetermined direction to control the branching direction at the branch portion.
18. The method for manufacturing an optical waveguide according to claim 9, wherein the optical fiber comprises a polarization-maintaining fiber, and the polarization direction of the curing light emitted from the optical fiber is adjusted to be a predetermined direction to control the branching direction at the branch portion.
19. The method for manufacturing an optical waveguide according to claim 10, wherein the optical fiber comprises a polarization-maintaining fiber, and the polarization direction of the curing light emitted from the optical fiber is adjusted to be a predetermined direction to control the branching direction at the branch portion.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A decorative antenna for automobile, characterized in that it comprises a case (1), a luminotron (2) connected with leads, and a mini wind-driven generator (3), said case can be formed as various ornaments having a transparent window thereon, and a mounting hole which matches the automobile antenna is provided on said case.
2. The decorative antenna for automobile of claim 1, characterized in that a wireless receiver (4) and a rechargeable battery (5) are provided in the case (1), and a remote controller (6) is further provided, the mini wind-driven generator (3) charges the rechargeable battery and supplies power to the luminotron, the rechargeable battery supplies power to the receiver whose control signal output terminal is connected to the luminotron; the wireless receiver uses universal remote control receiving module which can demodulate and magnify the received signals and output a control signal so as to actuate the luminotron to emit flash light.