公开(公告)号：AU2002255579A1

公开(公告)日：2002-10-15

申请号：AU2002255579

申请日：2002-02-11

Applicant: CORNING INC

Inventor： LELIC MUHIDIN ,  MENON NARESH ,  COWLE GREGORY J

IPC: H01S3/067 ,  H01S3/13 ,  H01S3/23 ,  H04B10/17 ,  H01S3/00

Abstract: A dynamic controller for a multi-channel EDFA-type optical amplifier is provided that is capable of providing a substantially tilt-free output over a range of selectable gain set points. The dynamic controller includes a variable optical attenuator coupled between the two amplification coils of the EDFA amplifier, and a control circuit that instructs the attenuator of an amount that each channel should be attenuated to achieve a tilt-free output at a selected gain point. The controller further includes a gain controller and a tilt controller connected to the control circuit of the variable optical attenuator for providing signals indicative of an average amount of per channel attenuation and a relative amount of per channel attenuation necessary to achieve a selected gain set point while reducing or eliminating tilt, respectively.

公开(公告)号：CA2357496A1

公开(公告)日：2000-07-13

申请号：CA2357496

申请日：1999-12-14

Applicant: CORNING INC

Inventor： WANG CHIA C ,  MCNAMARA THOMAS W ,  COWLE GREGORY J ,  HALL DOUGLAS W

IPC: H01S3/10 ,  H01S3/06 ,  H01S3/13 ,  H04B10/296 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  H04B10/17

Abstract: An optical amplifier includes an optical feedback resonant laser cavity (OFR C) including a power dependent loss element (PDLE) having the characteristic th at as the incident laser power on the PDLE increases the cavity loss decreases. The OFRC with the PDLE provides optical gain control or optical power contro l for a WDM amplifier or a single channel power equalization amplifier (PEA), respectively. A 1xNxN WADM node incorporating more than one of these amplifiers, at least some of which commonly share a pump source, and a metho d for controlling a transient power change in a single channel optical amplifi er or reducing a DC gain error in a WDM optical amplifier that are subject to dynamically variable operating conditions at an input of the amplifier, are also disclosed.

公开(公告)号：WO02080378A2

公开(公告)日：2002-10-10

申请号：PCT/US0205236

申请日：2002-02-11

Applicant: CORNING INC

Inventor： COWLE GREGORY J ,  LELIC MUHIDIN ,  MENON NARESH

IPC: H01S3/067 ,  H01S3/13 ,  H01S3/23 ,  H04B10/17 ,  H04B

CPC classification number: H04B10/2941 ,  H01S3/06758 ,  H01S3/1305 ,  H01S3/2383 ,  H04B10/296

Abstract: A dynamic controller for a multi-channel EDFA-type optical amplifier is provided that is capable of providing a substantially tilt-free output over a range of selectable gain set points. The dynamic controller includes a variable optical attenuator coupled between the two amplification coils of the EDFA amplifier, and a control circuit that instructs the attenuator of an amount that each channel should be attenuated to achieve a tilt-free output at a selected gain point. The controller further includes a gain controller and a tilt controller connected to the control circuit of the variable optical attenuator for providing signals indicative of an average amount of per channel attenuation and a relative amount of per channel attenuation necessary to achieve a selected gain set point while reducing or eliminating tilt, respectively.

Abstract translation: 提供了一种用于多通道EDFA型光放大器的动态控制器，其能够在可选择的增益设定点的范围上提供基本无倾斜的输出。 动态控制器包括耦合在EDFA放大器的两个放大线圈之间的可变光衰减器，以及控制电路，其指示衰减器的衰减量，每个通道应被衰减以在选定的增益点实现无倾斜输出。 控制器还包括增益控制器和连接到可变光衰减器的控制电路的倾斜控制器，用于提供指示平均每通道衰减量的信号以及实现所选增益设定点所必需的每通道衰减的相对量， 分别减少或消除倾斜。

公开(公告)号：AU6099001A

公开(公告)日：2001-11-07

申请号：AU6099001

申请日：2001-02-27

Applicant: CORNING INC

Inventor： COWLE GREGORY J ,  FLOOD FELTON A ,  WANG CHIA C ,  ZENTENO LUIS A

IPC: H01S3/067 ,  H01S3/00

Abstract: A multi-stage optical fiber amplifier comprises a first gain stage amplifying and optical signal; a pumping source coupled to the first gain stage, a second gain stage coupled to the first gain to further amplifying the optical signal to a desired output signal power, and a second pumping source coupled to the second gain stage. The second pumping source is preferably an erbium-doped fiber laser and has an operating wavelength between about 1520 nm and about 1620 nm. This amplifier achieves good noise figure and high output powers.

公开(公告)号：AU3635001A

公开(公告)日：2001-07-31

申请号：AU3635001

申请日：2000-11-30

Applicant: CORNING INC

Inventor： COWLE GREGORY J ,  MCNAMARA THOMAS W ,  WANG CHIA C

IPC: H01S3/131 ,  H01S3/16 ,  H01S3/067

公开(公告)号：AU2361200A

公开(公告)日：2000-07-24

申请号：AU2361200

申请日：1999-12-14

Applicant: CORNING INC

Inventor： COWLE GREGORY J ,  HALL DOUGLAS W ,  MCNAMARA THOMAS W ,  WANG CHIA C

IPC: H01S3/10 ,  H01S3/06 ,  H01S3/13 ,  H04B10/296 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  H04B10/17

Abstract: An optical amplifier includes an optical feedback resonant laser cavity (OFRC) including a power dependent loss element (PDLE) having the characteristic that as the incident laser power on the PDLE increases the cavity loss decreases. The OFRC with the PDLE provides optical gain control or optical power control for a WDM amplifier or a single channel power equalization amplifier (PEA), respectively. A 1xNxN WADM node incorporating more than one of these amplifiers, at least some of which commonly share a pump source, and a method for controlling a transient power change in a single channel optical amplifier or reducing a DC gain error in a WDM optical amplifier that are subject to dynamically variable operating conditions at an input of the amplifier, are also disclosed.