发明名称 |
PROCESS FOR PRODUCING AN OPTICAL FIBER HAVING A LOW POLARIZATION MODE DISPERSION |
摘要 |
An Apparatus for producing a low-PMD optical fiber, comprises a furnace (6) for melting a lower portion of an optical preform (3); a traction device (8) for pulling an optical fiber (4) from said lower portion of an optical preform; a spinning device (20) 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 (9) for winding the optical fiber onto a reel (10); and a twisting device (40) for imparting to the spun optical fiber a unidirectinal twist in a direction opposite said elastic torsion, so as to control the residual twist in the optical fiber. |
申请公布号 |
WO2004050573(A1) |
申请公布日期 |
2004.06.17 |
申请号 |
WO2002EP10737 |
申请日期 |
2002.09.25 |
申请人 |
ROBA, GIACOMO, STEFANO;SARCHI, DAVIDE |
发明人 |
ROBA, GIACOMO, STEFANO;SARCHI, DAVIDE |
分类号 |
B65H49/02;B65H55/00;C03B37/027;C03B37/03;C03B37/12;G02B6/02 |
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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