Method of producing optical fiber preform

Details Method of producing optical fiber preform Method of producing optical fiber preform

C - Chemistry, Metallurgy

03

B

117/85

C03B 37/018 (2006.01) C03B 37/012 (2006.01)

Patent

CA 1202532

- 1 - Abstract: The present invention relates to a method of producing a preform for a single-polarisation optical fiber being elliptical in cross section. The method is comprised of the steps of forming a thin glass film to become a cladding layer, or a jacket layer or thin glass films to a cladding and jacket layers on the inner wall of a glass mother tube. The method includes the step of inserting a glass rod to become a core or a cladding into the mother tube and the step of heating the mother tube while at the same time pro- viding a reduced pressure within the mother tube so that the whole arrangement becomes a solid preform.

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