Method of fabricating high birefringence fibers

Details Method of fabricating high birefringence fibers Method of fabricating high birefringence fibers

C - Chemistry, Metallurgy

03

B

49/8

C03B 37/027 (2006.01) C03B 37/012 (2006.01) C03B 37/014 (2006.01) C03C 13/04 (2006.01) G02B 6/10 (2006.01)

Patent

CA 1203079

- 12 - METHOD OF FABRICATING HIGH BIREFRINGENCE FIBERS ABSTRACT The present invention relates to a technique for producing polarization preserving and single polarization optical fibers. As disclosed, high birefringence is introduced into the preform by deforming the fiber preform such that a cladding layer becomes flat and highly conformable, while the core remains hard and substantially round. In particular, a cladding layer with a relatively low melting point is utilized such that when the preform is heated the cladding becomes liquified while the core remains solid. The preform may then be deformed so that the cladding layer is substantially flattened. Standard drawing techniques may then be utilized to form polarization-preserving fibers and single polarization fibers from the preform.

459083

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