The present invention concerns a preform for an optical fiber, an optical fiber so obtained and methods for making the same. The fiber is characterized in that porous glass doped with at least one dopant is used. Resulting fibers can be used to make high attenuation fibers.

 
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> Spool having a universal flange and method of making same

> Devices and methods for side-coupling optical fibers to optoelectronic components
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