Method of producing optical waveguide

Details Method of producing optical waveguide Method of producing optical waveguide

C - Chemistry, Metallurgy

03

B

49/8.8

C03B 37/025 (2006.01) C03B 37/012 (2006.01) C03B 37/018 (2006.01) C03B 37/027 (2006.01)

Patent

CA 1147960

ABSTRACT OF THE DISCLOSURE A method of producing an optical waveguide by melt- drawing a transparent glass rod which has been produced by collapsing a porous glass rod after being doped with a dopant material, said dopant material being deposited on the surface of the micro pores in order to enhance the refractive index of the collapsed glass rod. A waveguide having higher mechanical strength and lower transmission is attained by drawing said glass rod at a temperature very close to the melting point of the outermost portion of the fiber without causing any over- melting or bubbling in the core portion, said drawing process being facilitated by matching the viscosity and characteristics of the outermost lower-refractive-index portion to those of the central higher-refractive-index portion.

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