METHOD OF MAKING OPTICAL FIBERS IN A REDUCING ATMOSPHERE

A method for forming an optical fiber preform and fibers drawn from the preform. The method includes forming a soot cladding monolith, inserting a consolidated core cane into the internal cavity, and processing the resulting core-cladding assembly to form a preform. Processing may include exposing t...

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Bibliographische Detailangaben
Hauptverfasser: BOOKBINDER DANA CRAIG, YANG LI, DESORCIE ROBERT BRETT, BILLINGS AMANDA LEE, TANDON PUSHKAR, DE PAOR LIAM RUAN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for forming an optical fiber preform and fibers drawn from the preform. The method includes forming a soot cladding monolith, inserting a consolidated core cane into the internal cavity, and processing the resulting core-cladding assembly to form a preform. Processing may include exposing the core-cladding assembly to a drying agent and/or dopant precursor, and sintering the core-cladding assembly in the presence of a reducing agent to densify the soot cladding monolith onto the core cane to form a preform. The preform features low hydroxyl content and low sensitivity to hydrogen. Fibers drawn from the preform exhibit low attenuation losses from absorption by the broad band centered near 1380 nm.