发明名称 |
OPTICAL FIBER HAVING A LOW POLARIZATION MODE DISPERSION AND PROCESS AND APPARATUS FOR PRODUCING IT |
摘要 |
An apparatus for producing a low-PMD optical fiber having a furnace for melting a lower portion of an optical preform; a traction device for pulling an optical fiber from the lower portion of an optical preform; a spinning device for imparting a substantially constant and unidirectional spin to the optical fiber as it is pulled, which causes the fiber to undergo an elastic torsion; a winding device for winding the optical fiber onto a reel; and a twisting device for imparting to the spun optical fiber a unidirectional twist in a direction opposite the elastic torsion, so as to control the residual twist in the optical fiber. A process for producing the fiber, an optical fiber and a cable are also provided. |
申请公布号 |
AU2003267395(A1) |
申请公布日期 |
2004.04.19 |
申请号 |
AU20030267395 |
申请日期 |
2003.09.22 |
申请人 |
PIRELLI AND C. S.P.A. |
发明人 |
GIACOMO, STEFANO ROBA;DAVIDE SARCHI;MARTINO TRAVAGNIN;ALEXIS DEBUT |
分类号 |
B65H49/02;B65H55/00;C03B37/027;C03B37/03;C03B37/12;G02B6/02;(IPC1-7):C03B37/03;G02B6/16;G02B6/44 |
主分类号 |
B65H49/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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