公开(公告)号：CA2242989A1

公开(公告)日：1997-07-24

申请号：CA2242989

申请日：1997-01-21

Applicant: CORNING INC

Inventor： HENDERSON DANNY L ,  LI MING-JUN ,  NOLAN DANIEL A ,  WASHBURN GLENDA R

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/03 ,  G02B6/02 ,  G02B6/024 ,  G02B6/16

Abstract: Disclosed are methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are available and thus not readily known in advance. The spin functions disclosed take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.

公开(公告)号：AU1579497A

公开(公告)日：1997-08-11

申请号：AU1579497

申请日：1997-01-21

Applicant: CORNING INC

Inventor： HENDERSON DANNY L ,  LI MING-JUN ,  NOLAN DANIEL A ,  WASHBURN GLENDA R

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/03 ,  G02B6/02 ,  G02B6/024 ,  G02B6/16

Abstract: The invention provides improved methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are variable and thus not readily known in advance. The spin functions of the invention take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.

公开(公告)号：AU719604B2

公开(公告)日：2000-05-11

申请号：AU1579497

申请日：1997-01-21

Applicant: CORNING INC

Inventor： HENDERSON DANNY L ,  LI MING-JUN ,  NOLAN DANIEL A ,  WASHBURN GLENDA R

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/03 ,  G02B6/02 ,  G02B6/024 ,  G02B6/16

Abstract: The invention provides improved methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are variable and thus not readily known in advance. The spin functions of the invention take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.