公开(公告)号：AU6914996A

公开(公告)日：1997-04-17

申请号：AU6914996

申请日：1996-09-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FATEHI MOHAMMAD T ,  IZADPANAH HOSSEIN

IPC: H01S3/067 ,  H01S3/131 ,  H04B10/08 ,  G02B15/00

Abstract: An optical monitor tap in fiber optical amplifiers is achieved in a configuration with internal input signal monitoring taps, in accordance with the principles of the invention, by placing the tap some distance into the actual optical amplifier active fiber. This allows the system to minor the integrity of the amplifier without impairing the quality of the associated signal. In an illustrative embodiment of the present invention, the amplifier is generally comprised of a long piece of rare-earth material doped fiber to which a fiber optic pump source is coupled via a wavelength divisional multiplexer (WDM) coupler. The tap is placed at some distance from the input of the fiber amplifier. The distance should be small enough such that there has been amplification of the signal but not so much as to have the signal saturated or compressed.

公开(公告)号：WO9712265A3

公开(公告)日：1997-04-24

申请号：PCT/US9614234

申请日：1996-09-04

Applicant: FATEHI MOHAMMAD T ,  IZADPANAH HOSSEIN ,  LUCENT TECHNOLOGIES INC

Inventor： FATEHI MOHAMMAD T ,  IZADPANAH HOSSEIN

IPC: H01S3/067 ,  H01S3/131 ,  H04B10/08 ,  H01S3/00

CPC classification number: H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S2301/06 ,  H04B10/077 ,  H04B10/07955

Abstract: An optical monitor tap in fiber optical amplifiers is achieved in a configuration with internal input signal monitoring taps, in accordance with the principles of the invention, by placing the tap some distance into the actual optical amplifier active fiber. This allows the system to monitor the integrity of the amplifier without impairing the quality of the associated signal. In an illustrative embodiment of the present invention, the amplifier is generally comprised of a long piece of rare-earth material doped fiber (60, 62) to which a fiber optic pump source (26) is coupled via a wavelength divisional multiplexer (20) (WDM) coupler. The tap (64) is placed at some distance from the input (22) of the fiber amplifier. The distance should be small enough such that there has been amplification of the signal but not so much as to have the signal saturated or compressed.