公开(公告)号：US07110678B2

公开(公告)日：2006-09-19

申请号：US10840172

申请日：2004-05-05

申请人： Heinz Willebrand ,  Maha Achour

发明人： Heinz Willebrand ,  Maha Achour

IPC分类号： H04B10/00

CPC分类号： H04B10/1123 ,  H04B10/114

摘要： A hybrid wireless optical and radio frequency (RF) communication link utilizes parallel free-space optical and RF paths for transmitting data and control and status information. The optical link provides the primary path for the data, and the RF link provides a concurrent or backup path for the network data, as well as a reliable and primary path for the control and status information. When atmospheric conditions degrade the optical link to the point at which optical data transmission fails, the hybrid communication link switches to the RF link to maintain availability of data communications. The switch may occur automatically, based on an assessment of the quality of the optical signal communicated through the optical path.

摘要翻译： 混合无线光和射频（RF）通信链路利用并行的自由空间光和RF路径来发送数据和控制和状态信息。 光链路为数据提供主要路径，RF链路为网络数据提供并行或备份路径，以及用于控制和状态信息的可靠和主路径。 当大气条件使光链路降级到光数据传输失败的时候，混合通信链路切换到RF链路，以保持数据通信的可用性。 基于通过光路传送的光信号的质量的评估，开关可以自动发生。

公开(公告)号：US06763195B1

公开(公告)日：2004-07-13

申请号：US09482782

申请日：2000-01-13

申请人： Heinz Willebrand ,  Maha Achour

发明人： Heinz Willebrand ,  Maha Achour

IPC分类号： H04B1000

CPC分类号： H04B10/1123 ,  H04B10/114

摘要： A hybrid wireless optical and radio frequency (RF) communication link utilizes parallel free-space optical and RF paths for transmitting data and control and status information. The optical link provides the primary path for the data, and the RF link provides a concurrent or backup path for the network data, as well as a reliable and primary path for the control and status information. When atmospheric conditions degrade the optical link to the point at which optical data transmission fails, the hybrid communication link switches to the RF link to maintain availability of data communications. The switch may occur automatically, based on an assessment of the quality of the optical signal communicated through the optical path.

摘要翻译： 混合无线光和射频（RF）通信链路利用并行的自由空间光和RF路径来发送数据和控制和状态信息。 光链路为数据提供主要路径，RF链路为网络数据提供并行或备份路径，以及用于控制和状态信息的可靠和主路径。 当大气条件使光链路降级到光数据传输失败的时候，混合通信链路切换到RF链路，以保持数据通信的可用性。 基于通过光路传送的光信号的质量的评估，开关可以自动发生。

公开(公告)号：US06239888B1

公开(公告)日：2001-05-29

申请号：US09065685

申请日：1998-04-24

申请人： Heinz Willebrand

发明人： Heinz Willebrand

IPC分类号： H04J1400

CPC分类号： H04B10/1125 ,  H04B10/2912 ,  H04J14/02 ,  H04Q11/0062 ,  H04Q2011/0026

摘要： Erbium doped fiber amplifiers (ERDAs) optically couple optical signals between free-space and fiber optic links of a terrestrial optical communication network. The optical gain of transmitting and receiving ERDAs is controlled to achieve good optical signal communication. Control occurs in response to signals received at the transmitting and receiving ends of the links. Control, status and management information may be communicated optically between link head stations. The physical position of transceivers at opposite ends of the link optical signal paths is also controlled.

摘要翻译： 铒掺杂光纤放大器（ERDAs）在地面光通信网络的自由空间和光纤链路之间光耦合光信号。 控制发射和接收ERDAs的光学增益，实现良好的光信号通信。 响应于在链路的发送和接收端接收的信号发生控制。 控制，状态和管理信息可以在链路头站之间光学地传送。 收发器在链路光信号路径两端的物理位置也受到控制。

公开(公告)号：US06868237B2

公开(公告)日：2005-03-15

申请号：US09849613

申请日：2001-05-04

申请人： Heinz Willebrand ,  Gerald R. Clark

发明人： Heinz Willebrand ,  Gerald R. Clark

IPC分类号： H04B10/10 ,  H04B10/17 ,  H04J14/02 ,  H04Q11/00 ,  H04B10/06 ,  H04B10/00 ,  H04J14/00

CPC分类号： H04B10/1125 ,  H04B10/1149 ,  H04B10/2912 ,  H04B10/40 ,  H04J14/02 ,  H04Q11/0062 ,  H04Q2011/0026

摘要： Optical signals are received from a free-space link by directing received light onto a plurality of microlenses and then directing light received through each of the microlenses into a respective single mode optical fiber (SMF). Light beams from the SMFs are combined into a single light beam in one SMF. The single light beam is amplified with a multi-wavelength fiber amplifier and attenuated with a variable optical attenuator. The power gain of the multi-wavelength fiber amplifier and the attenuation of the variable optical attenuator are controlled. The single light beam is directed into a fiber optic communication system that is optically coupled to the variable optical attenuator.

摘要翻译： 通过将接收的光引导到多个微透镜上然后将通过每个微透镜接收的光引导到相应的单模光纤（SMF）中，从自由空间链路接收光信号。 来自SMF的光束在一个SMF中组合成单个光束。 单个光束用多波长光纤放大器放大，并用可变光衰减器衰减。 控制多波长光纤放大器的功率增益和可变光衰减器的衰减。 单个光束被引导到光学耦合到可变光衰减器的光纤通信系统中。

公开(公告)号：US06462847B2

公开(公告)日：2002-10-08

申请号：US09823175

申请日：2001-03-29

申请人： Heinz Willebrand

发明人： Heinz Willebrand

IPC分类号： H04B1000

CPC分类号： H04B10/1125 ,  H04B10/2912 ,  H04J14/02 ,  H04Q11/0062 ,  H04Q2011/0026

摘要： Erbium doped fiber amplifiers (ERDAS) optically couple optical signals between free-space and fiber optic links of a terrestrial optical communication network. The optical gain of transmitting and receiving ERDAs is controlled to achieve good optical signal communication. Control occurs in response to signals received at the transmitting and receiving ends of the links. Control, status and management information may be communicated optically between link head stations. The physical position of transceivers at opposite ends of the link optical signal paths is also controlled.

摘要翻译： 掺铒光纤放大器（ERDAS）在地面光通信网络的自由空间和光纤链路之间光耦合光信号。 控制发射和接收ERDAs的光学增益，实现良好的光信号通信。 响应于在链路的发送和接收端接收的信号发生控制。 控制，状态和管理信息可以在链路头站之间光学地传送。 收发器在链路光信号路径两端的物理位置也受到控制。

公开(公告)号：US06934477B2

公开(公告)日：2005-08-23

申请号：US10190227

申请日：2002-07-03

申请人： Heinz Willebrand

发明人： Heinz Willebrand

IPC分类号： H04B10/10 ,  H04B10/17 ,  H04J14/02 ,  H04Q11/00 ,  H04B10/00

CPC分类号： H04B10/1125 ,  H04B10/2912 ,  H04J14/02 ,  H04Q11/0062 ,  H04Q2011/0026

摘要： Erbium doped fiber amplifiers (ERDAs) optically couple optical signals between free-space and fiber optic links of a terrestrial optical communication network. The optical gain of transmitting and receiving ERDAs is controlled to achieve good optical signal communication. Control occurs in response to signals received at the transmitting and receiving ends of the links. Control, status and management information may be communicated optically between link head stations. The physical position of transceivers at opposite ends of the link optical signal paths is also controlled.

摘要翻译： 铒掺杂光纤放大器（ERDAs）在地面光通信网络的自由空间和光纤链路之间光耦合光信号。 控制发射和接收ERDAs的光学增益，实现良好的光信号通信。 响应于在链路的发送和接收端接收的信号发生控制。 控制，状态和管理信息可以在链路头站之间光学地传送。 收发器在链路光信号路径两端的物理位置也受到控制。

公开(公告)号：US06889009B2

公开(公告)日：2005-05-03

申请号：US09835866

申请日：2001-04-16

申请人： Heinz Willebrand

发明人： Heinz Willebrand

IPC分类号： H04B10/08 ,  H04B10/10 ,  H04B10/00

CPC分类号： H04B10/07 ,  H04B10/1125

摘要： A method of managing a free-space optical network includes monitoring environmental and weather conditions in the vicinity of one or more free-space optical links in the network. Data is gathered by environmental condition instruments, such as visibility meters, and is used to assess whether atmospheric conditions have deteriorated to the point where operation of one or more free-space links might be in jeopardy. If data from an environmental condition instrument falls below a predetermined level, network data traffic is routed over an alternate communication path, which may include radio frequency (RF) paths, fiber optic cables, wire cables, or other free-space links.

摘要翻译： 管理自由空间光网络的方法包括监视网络中一个或多个自由空间光链路附近的环境和天气状况。 数据由环境条件仪器（如能见度计）收集，用于评估大气条件是否恶化至一个或多个自由空间链路的运行可能受到威胁。 如果来自环境条件仪器的数据低于预定水平，则网络数据业务通过可选的通信路径进行路由，其可以包括射频（RF）路径，光纤电缆，线缆或其它空闲链路。

公开(公告)号：US5838470A

公开(公告)日：1998-11-17

申请号：US868980

申请日：1997-06-04

申请人： Christian Volker Radehaus ,  Jon Robert Sauer ,  Heinz Willebrand

发明人： Christian Volker Radehaus ,  Jon Robert Sauer ,  Heinz Willebrand

IPC分类号： H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/02 ,  H04Q11/0003 ,  H04Q2011/0009 ,  H04Q2011/0015 ,  H04Q2011/0039 ,  H04Q2011/0081

摘要： An optical receiver suitable for use in a wavelength division multiplexing (WDM) system is able to tolerate shifts in the transmitting lasers' wavelength. During a periodically repeated wavelength synchronization phase, only a single transmitter laser is operating, and a peak finder locks onto the wavelength having greatest power and notes the corresponding detector pixel's position. Thus, the receiver knows the relative wavelength of the transmitting laser in terms of the detector pixel illuminated with the brightest light, and can store this information for later reference. The active transmitter lasers take turns synchronizing their wavelengths during successive synchronization phases. During the multi-wavelength data transmission phase, many lasers in the system transmit information at the same time, at different wavelengths. During this phase, each receiver decodes the input from one or a few selected pixels identified previously during the synchronization phase as being associated with a particular selected transmitter.

摘要翻译： 适用于波分复用（WDM）系统的光接收机能够容忍发射激光器波长的偏移。 在周期性重复的波长同步阶段期间，只有单个发射器激光器工作，并且峰值寻找器锁定在具有最大功率的波长上并注意相应的检测器像素的位置。 因此，接收机根据用最亮的光照射的检测器像素知道发射激光器的相对波长，并且可以存储该信息供以后参考。 有源发射器激光器在连续同步阶段轮流同步其波长。 在多波长数据传输阶段，系统中的许多激光器在不同波长的同时传输信息。 在该阶段期间，每个接收机将在先前在同步阶段中识别的一个或几个所选像素的输入解码为与特定选择的发射机相关联。