G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/00 (2006.01) G02B 5/28 (2006.01) G02B 5/30 (2006.01) G02F 1/225 (2006.01)
Patent
CA 2072831
Efficient, narrow-band rocking filters have been made in polarization-maintaining monomode optical fiber by photoinducing periodic birefringent gratings along the length of the fiber. These gratings, fabricated with a period chosen to provide synchronous coupling between the two principal states of polarization of the LP01 mode at a preselected wavelength, gently rock to and fro the principal polarization axes of the fiber. To photoinduce the grating, the fiber is exposed periodically along its length to a U.V. light beam which is incident at right angles to the geometrical axis of the fiber and is directed .pi./4 radians with respect to the principal axes. Efficient polarization mode conversion at 1.3 µm with the fiber gratings are obtained.
Bilodeau Francois C.
Hill Kenneth O.
Johnson Derwyn C.
Malo Bernard Y.
As Represented By The Ministe R. Of Industry Her Majesty The Queen In Right Of Canada
Bilodeau Francois C.
Hill Kenneth O.
Johnson Derwyn C.
Malo Bernard Y.
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