公开(公告)号：US09494484B2

公开(公告)日：2016-11-15

申请号：US14630988

申请日：2015-02-25

Applicant: II-VI Incorporated

Inventor： Aravanan Gurusami ,  Timothy K. Zahnley ,  Scott Dahl ,  Martin R. Williams ,  Ian P. McClean

IPC: G01N21/00 ,  G01M11/00 ,  H01S3/30

CPC classification number: G01M11/3127 ,  G01M11/319 ,  H01S3/0014 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/302

Abstract: An arrangement for providing real-time, in-service OTDR measurements in an optical communication system utilizing distributed Raman amplification. One or more of the laser diodes used to provide the pump light necessary to create optical gain is modified to also generate short duration pulses that ride above or below the conventional pump light. These short duration pulses (which co-exist with the pump light within the optical fiber) are used in performing OTDR measurements, with a conventional processing system used to evaluate reflected pulses and create the actual OTDR measurements.

Abstract translation: 一种用于在利用分布式拉曼放大的光通信系统中提供实时的在线OTDR测量的装置。 用于提供产生光学增益所需的泵浦光的一个或多个激光二极管被修改为也产生越过或低于传统泵浦光的短持续时间脉冲。 这些短时间脉冲（与光纤内的泵浦光共存）用于执行OTDR测量，其中使用用于评估反射脉冲并产生实际OTDR测量的常规处理系统。

公开(公告)号：US20160197673A1

公开(公告)日：2016-07-07

申请号：US14590460

申请日：2015-01-06

Applicant: II-VI Incorporated

Inventor： Ian Peter McClean ,  Aravanan Gurusami

IPC: H04B10/079 ,  G01M11/00 ,  H01S3/16 ,  H01S3/094 ,  H04B10/50 ,  H01S3/067

CPC classification number: H04B10/07955 ,  G01M11/3154 ,  H04B10/071 ,  H04B10/2912 ,  H04B10/503

Abstract: A doped fiber amplifier (e.g., an erbium-doped fiber amplifier—EDFA) module is configured to include metrology functionality for performing real-time measurements of the fiber spans connected to the EDFA. In one embodiment, a separate component utilized to perform optical time domain reflectometry (OTDR) measurements is embedded with the EDFA module. The OTDR measurement component includes its own laser source and detector, which are used to analyze the input and output fiber spans associated with the EDFA. In another embodiment, the pump laser of the EDFA is also used as the optical probe light source for the OTDR component, where the source is either “switched” or “shared” between performing amplification and providing OTDR measurements. In yet another embodiment, a “dual pump” source is included with the OTDR component itself and modified to utilize one laser for amplification and the other for OTDR purposes.

Abstract translation: 掺杂光纤放大器（例如，掺铒光纤放大器EDFA）模块被配置为包括用于对连接到EDFA的光纤跨段进行实时测量的测量功能。 在一个实施例中，用于执行光学时域反射测量（OTDR）测量的单独部件嵌入EDFA模块。 OTDR测量组件包括自己的激光源和检测器，用于分析与EDFA相关的输入和输出光纤跨度。 在另一个实施例中，EDFA的泵浦激光器也用作OTDR组件的光学探针光源，其中源在执行放大和提供OTDR测量之间“切换”或“共享”。 在又一实施例中，OTDR组件本身包含“双泵”源，并被修改为利用一个激光进行放大，另一个用于OTDR目的。

公开(公告)号：US20150253217A1

公开(公告)日：2015-09-10

申请号：US14630988

申请日：2015-02-25

Applicant: II-VI Incorporated

Inventor： Aravanan Gurusami ,  Timothy K. Zahnley ,  Scott Dahl ,  Martin R. Williams ,  Ian P. McClean

IPC: G01M11/00 ,  H01S3/30

CPC classification number: G01M11/3127 ,  G01M11/319 ,  H01S3/0014 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/302

Abstract: An arrangement for providing real-time, in-service OTDR measurements in an optical communication system utilizing distributed Raman amplification. One or more of the laser diodes used to provide the pump light necessary to create optical gain is modified to also generate short duration pulses that ride above or below the conventional pump light. These short duration pulses (which co-exist with the pump light within the optical fiber) are used in performing OTDR measurements, with a conventional processing system used to evaluate reflected pulses and create the actual OTDR measurements.

Abstract translation: 一种用于在利用分布式拉曼放大的光通信系统中提供实时的在线OTDR测量的装置。 用于提供产生光学增益所需的泵浦光的一个或多个激光二极管被修改为也产生越过或低于传统泵浦光的短持续时间脉冲。 这些短时间脉冲（与光纤内的泵浦光共存）用于执行OTDR测量，其中使用用于评估反射脉冲并产生实际OTDR测量的常规处理系统。