Glass base material for optical fiber and manufacturing...

Details Glass base material for optical fiber and manufacturing... Glass base material for optical fiber and manufacturing...

C - Chemistry, Metallurgy

03

B

C03B 37/01 (2006.01) C03B 37/014 (2006.01) C03B 37/027 (2006.01)

Patent

CA 2464010

A method for manufacturing a glass base material for an optical fiber by forming a core rod having a core section and a portion of a clad, forming an additional clad by depositing glass particles on circumference of the core rod, and performing a sintering and vitrifying process on an obtained porous base material, includes the step of forming the core rod in order that the relation 3.75<=a/m<=6 is satisfied, where 'a' denotes an outer diameter of a section corresponding to the core rod, and 'm' denotes a mode field diameter at 1385nm in wavelength with regard to the optical fiber obtained by drawing the glass base material.

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