Patent ID: 6760494
Filing Date: 2004-07-06
Classification: G02B

Abstract:
A fiber optic polarizer comprising:a chuck defining a groove in a face along a lengthwise direction thereof; a single mode fiber installed on the face around one end of said groove; a polarization-maintaining fiber installed on the face around the other end of said groove; a cladding plastic layer protected the single mode fiber and the polarization-maintaining fiber; a polarization beamsplitter disposed between said single mode fiber and said polarization-maintaining fiber; and a box hermetically enclosing the chuck and the polarization beamsplitter with portions of the single mode fiber and polarization-maintaining fiber exposed to an exterior; wherein the single mode fiber or the polarization-maintaining fiber is stick on the chuck by epoxy adhesive and the box sealed the chuck, the polarization beamsplitter, the single mode fiber or the polarization-maintaining fiber; the polarization beamsplitter is positioned to respectively align with the single mode fiber and the polarization-maintaining fiber at two opposite ends thereof to allow unpolarized light from the single mode fiber to enter the polarization beamsplitter at one end thereof and an o-ray of a polarized light to leave the polarization beamsplitter toward the polarization-maintaining fiber.