公开(公告)号：US08325413B2

公开(公告)日：2012-12-04

申请号：US12732118

申请日：2010-03-25

申请人： Abhijeet D. Deore ,  Andrew Q. Phan ,  Zhong Pan

发明人： Abhijeet D. Deore ,  Andrew Q. Phan ,  Zhong Pan

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06758 ,  H01S3/09408 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916 ,  H04J14/0201 ,  H04J14/0221

摘要： A system is provided that includes optical amplifiers provided upstream from an optical add-drop multiplexer (OADM). One of the optical amplifiers may be a Raman amplifier that supplies amplified light to another optical amplifier, such as an erbium doped fiber amplifier (EDFA), which, in turn, further amplifies and feeds the light to an input of the OADM. During turn-up, for example, the EDFA may initially be disabled, the power of the pump lasers of the Raman amplifier may be gradually increased until light input to the EDFA exceeds a power threshold at which the EDFA can amplify the input light. Light supplied to the EDFA does not have an excessive amount of power. Accordingly, at this point, the gain of the EDFA may be appropriately adjusted and then activated to supply optical signals to the OADM. Such optical signals may have a low power but not too low so as to prevent proper operation of downstream EDFA. Moreover, these optical signal do not have power that is so high as to cause “spiking.” As a result, cross-talk with optical signals added by the OADM is minimized, and such added optical signals may be sufficiently amplified by optical amplifiers downstream from the OADM.

摘要翻译： 提供了一种包括从光分插复用器（OADM）上游提供的光放大器的系统。 光放大器之一可以是拉曼放大器，其将放大的光提供给另一个光放大器，例如掺铒光纤放大器（EDFA），其又进一步放大并将光馈送到OADM的输入。 例如，在上电期间，EDFA最初可能被禁用，拉曼放大器的泵浦激光器的功率可以逐渐增加，直到输入到EDFA的光超过EDFA可以放大输入光的功率阈值。 提供给EDFA的光不具有过多的功率。 因此，此时可以适当地调节EDFA的增益，然后激活以向OADM提供光信号。 这样的光信号可能具有低功率但不太低，以便防止下游EDFA的正常操作。 而且，这些光信号的功率不高，从而引起尖峰。 结果，由OADM添加的光信号的串扰最小化，并且这种添加的光信号可以被OADM下游的光放大器充分放大。

公开(公告)号：US20110235164A1

公开(公告)日：2011-09-29

申请号：US12732118

申请日：2010-03-25

申请人： Abhijeet D. Deore ,  Andrew Q. Phan ,  Zhong Pan

发明人： Abhijeet D. Deore ,  Andrew Q. Phan ,  Zhong Pan

IPC分类号： H01S3/30

CPC分类号： H01S3/06758 ,  H01S3/09408 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916 ,  H04J14/0201 ,  H04J14/0221

摘要： A system is provided that includes optical amplifiers provided upstream from an optical add-drop multiplexer (OADM). One of the optical amplifiers may be a Raman amplifier that supplies amplified light to another optical amplifier, such as an erbium doped fiber amplifier (EDFA), which, in turn, further amplifies and feeds the light to an input of the OADM. During turn-up, for example, the EDFA may initially be disabled, the power of the pump lasers of the Raman amplifier may be gradually increased until light input to the EDFA exceeds a power threshold at which the EDFA can amplify the input light. Light supplied to the EDFA does not have an excessive amount of power. Accordingly, at this point, the gain of the EDFA may be appropriately adjusted and then activated to supply optical signals to the OADM. Such optical signals may have a low power but not too low so as to prevent proper operation of downstream EDFA. Moreover, these optical signal do not have power that is so high as to cause “spiking.” As a result, cross-talk with optical signals added by the OADM is minimized, and such added optical signals may be sufficiently amplified by optical amplifiers downstream from the OADM.

摘要翻译： 提供了一种包括从光分插复用器（OADM）上游提供的光放大器的系统。 光放大器之一可以是拉曼放大器，其将放大的光提供给另一个光放大器，例如掺铒光纤放大器（EDFA），其又进一步放大并将光馈送到OADM的输入。 例如，在上电期间，EDFA最初可能被禁用，拉曼放大器的泵浦激光器的功率可以逐渐增加，直到输入到EDFA的光超过EDFA可以放大输入光的功率阈值。 提供给EDFA的光不具有过多的功率。 因此，此时可以适当地调节EDFA的增益，然后激活以向OADM提供光信号。 这样的光信号可能具有低功率但不太低，以便防止下游EDFA的正常操作。 此外，这些光信号不具有如此高的能量以引起“尖峰”的功率。结果，由OADM添加的光信号的串扰最小化，并且这样添加的光信号可以被下游的光放大器充分放大 来自OADM。