Rotary joint for polarization plane maintaining optical fibers

G - Physics – 02 – B

Patent

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88/97.6

G02B 6/26 (2006.01) G02B 6/32 (2006.01) G02B 6/36 (2006.01) G02B 6/38 (2006.01)

Patent

CA 1308587

ABSTRACT OF THE DISCLOSURE A rotary joint for polarization plane maintaining optical fibers which can couple two polarization plane maintaining optical fibers to each other while maintaining the polarization plane maintaining property. The rotary joint comprises a rotary member, a fixed member, two optical fiber collimators and a 1/2 wavelength plate for coupling a polarization plane maintaining optical fiber connected to the rotary member with another polarization plane maintaining optical fiber connected to the fixed member, and gears for rotating the 1/2 wavelength plate at a speed equal to one half the rotational speed of the polarization plane maintaining optical fiber on the rotary member side.

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