公开(公告)号：JP2002141869A

公开(公告)日：2002-05-17

申请号：JP2001249707

申请日：2001-08-21

Applicant: LUCENT TECHNOLOGIES INC ,  UNIV LEHIGH

Inventor： CHRISTODOULIDES DEMETRIOS NICO ,  DELAVAUX JEAN-MARC PIERRE ,  MICINTOSH CHRISTPHER MICHAEL ,  TOULOUSE JEAN

IPC: G02F1/35 ,  G02B6/34 ,  H04B10/02 ,  H04B10/18

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber transmitting link, with which channel destruction caused by stimulated Raman scattering is reduced. SOLUTION: An optical fiber transmitting link 20, with which the channel destruction caused by stimulated Raman scattering is reduced, is formed by providing a high-pass optical filter 22 inside a transmitting fiber. The filter is provided with one or plural other components sometimes and is formed as a filter 'distributed' along the length of the optical fiber as well. A cutoff frequency concerning the high-pass optical filter is selected just below the frequency of an input channel to be transmitted. When using the link inside configuration accompanied with a large number of input channels, the cutoff frequency is controlled to be just below the lowest input channel frequency.

公开(公告)号：CA2353762A1

公开(公告)日：2002-02-21

申请号：CA2353762

申请日：2001-07-25

Applicant: UNIV LEHIGH ,  LUCENT TECHNOLOGIES INC

Inventor： MCINTOSH CHRISTOPHER MICHAEL ,  TOULOUSE JEAN ,  DELAVAUX JEAN-MARC PIERRE ,  CHRISTODOULIDES DEMETRIOS NICO

IPC: G02F1/35 ,  G02B6/34 ,  H04B10/02 ,  H04B10/18

Abstract: An optical fiber transmission link with reduced channel depletion due t o stimulated Raman scattering is formed by including a high pass optical filte r in the transmission fiber. The filter may comprise one or more discrete components, or may be formed as a "distributed" filter along the length of the optical fiber. T he cut-off frequency for the high pass optical filter is selected to be immediately bel ow the frequency of the input channel to be transmitted. When used in an arrangemen t with multiple input channels, the cut-off frequency is controlled to be immediate ly below the lowest input channel frequency.

公开(公告)号：CA2351268A1

公开(公告)日：2001-12-30

申请号：CA2351268

申请日：2001-06-22

Applicant: LUCENT TECHNOLOGIES INC ,  UNIV LEHIGH

Inventor： DELAVAUX JEAN-MARC PIERRE ,  MCINTOSH CHRISTOPHER MICHAEL ,  TOULOUSE JEAN ,  CHRISTODOULIDES DEMETRIOS NICO

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/30 ,  H04B10/17 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  H01S5/50

Abstract: A fiber Raman amplifier with increased gain and improved pump conversio n efficiency is formed by including a high pass optical filter in the amplifie r structure. The filter may comprise one or more discrete components, or may be formed as a "distributed" filter along the length of the fiber amplifier. The cut-off frequency for the high pass optical filter is selected to be immediately below the frequency o f the input signal to be amplified. When used in an arrangement with multiple input signals, the cut-off frequency is controlled to be immediately below the lowest input signal frequency.

公开(公告)号：CA2353762C

公开(公告)日：2005-10-18

申请号：CA2353762

申请日：2001-07-25

Applicant: LUCENT TECHNOLOGIES INC ,  UNIV LEHIGH

Inventor： CHRISTODOULIDES DEMETRIOS NICO ,  MCINTOSH CHRISTOPHER MICHAEL ,  DELAVAUX JEAN-MARC PIERRE ,  TOULOUSE JEAN

IPC: G02F1/35 ,  G02B6/34 ,  H04B10/02 ,  H04B10/18

Abstract: An optical fiber transmission link with reduced channel depletion due t o stimulated Raman scattering is formed by including a high pass optical filte r in the transmission fiber. The filter may comprise one or more discrete components, or may be formed as a "distributed" filter along the length of the optical fiber. T he cut-off frequency for the high pass optical filter is selected to be immediately bel ow the frequency of the input channel to be transmitted. When used in an arrangemen t with multiple input channels, the cut-off frequency is controlled to be immediate ly below the lowest input channel frequency.

公开(公告)号：CA2351268C

公开(公告)日：2004-10-26

申请号：CA2351268

申请日：2001-06-22

Applicant: UNIV LEHIGH ,  LUCENT TECHNOLOGIES INC

Inventor： CHRISTODOULIDES DEMETRIOS NICO ,  DELAVAUX JEAN-MARC PIERRE ,  MCINTOSH CHRISTOPHER MICHAEL ,  TOULOUSE JEAN

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/30 ,  H04B10/17 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  H01S5/50

Abstract: A fiber Raman amplifier with increased gain and improved pump conversio n efficiency is formed by including a high pass optical filter in the amplifie r structure. The filter may comprise one or more discrete components, or may be formed as a "distributed" filter along the length of the fiber amplifier. The cut-off frequency for the high pass optical filter is selected to be immediately below the frequency o f the input signal to be amplified. When used in an arrangement with multiple input signals, the cut-off frequency is controlled to be immediately below the lowest input signal frequency.