发明申请
- 专利标题: OPTICAL FIBER CONTAINING AN ALKALI METAL OXIDE AND METHODS AND APPARATUS FOR MANUFACTURING SAME
- 专利标题(中): 含有碱金属氧化物的光纤及其制造方法和装置
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申请号: US14314394申请日: 2014-06-25
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公开(公告)号: US20150316712A1公开(公告)日: 2015-11-05
- 发明人: James Gary Anderson , Dana Craig Bookbinder , Lisa Carine Chacon , Calvin Thomas Coffey , Adam James Ellison , Gregory Gerard Gausman , Rostislav Radiyevich Khrapko , Stephan Lvovich Logunov , Michael Thomas Murtagh , Clinton Damon Osterhout , Sabyasachi Sen , William Anthony Whedon
- 申请人: CORNING INCORPORATED
- 主分类号: G02B6/02
- IPC分类号: G02B6/02 ; C03B37/018 ; C03B37/027 ; C03B37/014 ; G02B6/028 ; C03B37/012
摘要:
Disclosed is an optical fiber having a core with an alkali metal oxide dopant in an peak amount greater than about 0.002 wt. % and less than about 0.1 wt. %. The alkali metal oxide concentration varies with a radius of the optical fiber. By appropriately selecting the concentration of alkali metal oxide dopant in the core and the cladding, a low loss optical fiber may be obtained. Also disclosed are several methods of making the optical fiber including the steps of forming an alkali metal oxide-doped rod, and adding additional glass to form a draw perform. Preferably, the draw preform has a final outer dimension (d2), wherein an outer dimension (d1) of the rod is less than or equal to 0.06 times the final outer dimension (d2). In a preferred embodiment, the alkali metal oxide-doped rod is inserted into the centerline hole of a preform to form an assembly.