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1. 发明申请

US20190356391A1 SYSTEM FOR ACHIEVING MULTIPLE BITS PER SYMBOL IN OPTICAL COMMUNICATIONS SYSTEMS BY COMBINING SPATIAL DOMAIN MULTIPLEXING AND PULSE AMPLITUDE MODULATION 审中-公开
公开(公告)号：US20190356391A1
公开(公告)日：2019-11-21
申请号：US16367238
申请日：2019-03-27
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Greg Lovell , Bilas Chowdhury , Ce Su , Han Wang , Rayan Enaya , Engin Eyceyurt
IPC分类号： H04B10/524 , H04J14/04 , H04B10/25
摘要： A modified optical PAM communication system using multiple laser sources to generate each amplitude level. The systems can be applied separately or in conjunction with another modulation system such as SDM, MDM, WDM, TDM, or other communication systems. In an embodiment, a PAM-4 system will increase data rate by a factor of two, but more complicated schemes using more lasers can be utilized to generate higher efficiency schemes. For example, a 25 Gbps NRZ signal will give 50 Gbps PAM-4 signal and higher laser systems can generate PAM-8 or PAM-16 for 75 and 100 Gbps systems respectively. These can be further applied to SDM systems to generate higher data rates equivalent to the number of SDM channels multiplied by the PAM efficiency. In embodiments, the invention may combing PAM with WDM and SDM to achieve multiple bits per symbol.

2. 发明授权

US09529147B2 All-optical spatial domain multiplexing de-multiplexer 有权
标题翻译：全光空间域复用解复用器
公开(公告)号：US09529147B2
公开(公告)日：2016-12-27
申请号：US14700106
申请日：2015-04-29
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Gregory L. Lovell
IPC分类号： H04Q11/00 , H04B10/2581 , H04J14/04 , G02B6/02 , G02B6/036
CPC分类号： G02B6/02042 , G02B6/036 , H04B10/2581 , H04J14/04 , H04Q11/0005 , H04Q2011/0024
摘要： An optical-to-optical inline spatial domain multiplexing (SDM) de-multiplexer for SDM communication comprising a plurality of concentric core layers each having a beveled output end and a cladding layer concentrically surrounding each core layer. The cladding layer has an index that is lower than the index of the core layer it surrounds. Also included is a system for SDM communication comprising at least one optical source to transmit optical energy, an SDM optical carrier fiber to receive optical energy from the source and output a plurality of SDM signals, a SDM de-multiplexer as described above wherein the SDM signals output from the carrier fiber are each incident upon one of the core layers, optical output fibers positioned to couple SDM signals from each cladding layer, and a photodetector communicatively coupled to the outputs of the optical output fibers to couple the SDM signals output from the optical output fibers.
摘要翻译：一种用于SDM通信的光对称在线空间域复用（SDM）解复用器，包括多个同心核心层，每个同心核心层具有倾斜的输出端和围绕每个核心层的包层。包覆层的折射率低于其围绕的芯层的折射率。还包括一种用于SDM通信的系统，其包括至少一个用于传输光能的光源，SDM光载波光纤以从源接收光能并输出多个SDM信号，如上所述的SDM解复用器，其中SDM 从载体光纤输出的信号各自入射到核心层之一，定位成耦合来自每个包层的SDM信号的光输出光纤和通信地耦合到光输出光纤的输出的光电检测器，以耦合来自光输出光纤。

3. 发明授权

US09515729B2 Omnidirectional free space optical communications receiver 有权
标题翻译：全方位自由空间光通信接收机
公开(公告)号：US09515729B2
公开(公告)日：2016-12-06
申请号：US14700012
申请日：2015-04-29
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Michael F. Finch
IPC分类号： H04J14/08 , H04B10/112 , H04B10/11
CPC分类号： H04B10/1121 , H04B10/11
摘要： A free space optical receiver comprising a photodetector and a fiber bundle. The fiber bundle comprises a plurality of optical fibers splayed apart at one of their ends to receive free space optical energy from multiple directions. The splayed apart ends of the plurality of optical fibers may create a hemispherical shape. Each of the plurality of optical fibers has an acceptance cone for which it couples optical energy into the splayed end of the optical fiber. The acceptance cones of the splayed ends of the plurality of optical fibers may overlap to form an omnidirectional acceptance zone. The other, non-splayed ends of the plurality of optical fibers are communicatively coupled to the photodetector, which is positioned to receive the free space optical energy from the non-splayed ends of the plurality of optical fibers. An optical communication system including the free space optical receiver is also described.
摘要翻译：一种包括光电检测器和光纤束的自由空间光接收器。纤维束包括在其一端分开展开的多根光纤，以从多个方向接收自由空间光能。多个光纤的分开的端部可以形成半球形。多个光纤中的每一个具有将光能耦合到光纤的展开端的接收锥。多个光纤的展开端的接收锥可以重叠以形成全向接受区。多个光纤的另一个未张开的端部通信地耦合到光电检测器，光电检测器被定位成从多个光纤的未展开的端部接收自由空间光能。还描述了包括自由空间光接收机的光通信系统。

4. 发明申请

US20210152252A1 SYSTEM FOR ACHIEVING MULTIPLE BITS PER SYMBOL IN OPTICAL COMMUNICATIONS SYSTEMS BY COMBINING SPATIAL DOMAIN MULTIPLEXING AND PULSE AMPLITUDE MODULATION 有权
公开(公告)号：US20210152252A1
公开(公告)日：2021-05-20
申请号：US17102735
申请日：2020-11-24
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Greg Lovell , Bilas Chowdhury , Ce Su , Han Wang , Rayan Enaya , Engin Eyceyurt
IPC分类号： H04B10/524 , H04B10/25 , H04J14/04 , H04B10/54 , H04B10/69
摘要： A modified optical PAM communication system using multiple laser sources to generate each amplitude level. The systems can be applied separately or in conjunction with another modulation system such as SDM, MDM, WDM, TDM, or other communication systems. In an embodiment, a PAM-4 system will increase data rate by a factor of two, but more complicated schemes using more lasers can be utilized to generate higher efficiency schemes. For example, a 25 Gbps NRZ signal will give 50 Gbps PAM-4 signal and higher laser systems can generate PAM-8 or PAM-16 for 75 and 100 Gbps systems respectively. These can be further applied to SDM systems to generate higher data rates equivalent to the number of SDM channels multiplied by the PAM efficiency. In embodiments, the invention may combing PAM with WDM and SDM to achieve multiple bits per symbol.

5. 发明授权

US09712239B2 Method and apparatus for multiplexed optical communication system using spatial domain multiplexing (SDM) and orbital angular momentum of photon (OAM) multiplexing with wavelength division multiplexing (WDM) 有权
公开(公告)号：US09712239B2
公开(公告)日：2017-07-18
申请号：US15018370
申请日：2016-02-08
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Saud Alanzi , Bilas Chowdhury
IPC分类号： H04J14/02 , H04B10/2581 , H04J14/04
CPC分类号： H04B10/2581 , H04J14/0223 , H04J14/04
摘要： A multiplexed optical communication system comprising a carrier optical fiber, a plurality of launching light sources, and a matching plurality of multiplexer/demultiplexers and photodetectors is described and claimed. Optical communication channel separation by Spatial Domain Multiplexing (SDM), Optical Angular Momentum (OAM) multiplexing, and Wavelength Division Multiplexing (WDM) is used in combination to achieve significant increase in optical communication channel bandwidth over the prior art. The launching light sources may be positioned such that the light beams are incident on the receiving end of the carrier optical fiber at desired angles including complementary angles. Crosstalk between optical communication channels is minimal. The communication bandwidth of a TDM system may be increased by an order of magnitude due the layered WDM/SDM/OAM data multiplexing of the invention.

6. 发明申请

US20150309249A1 ALL-OPTICAL SPATIAL DOMAIN MULTIPLEXING DE-MULTIPLEXER 有权
标题翻译：全光域空域多路复用器
公开(公告)号：US20150309249A1
公开(公告)日：2015-10-29
申请号：US14700106
申请日：2015-04-29
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Gregory L. Lovell
IPC分类号： G02B6/02 , G02B6/036 , H04Q11/00
CPC分类号： G02B6/02042 , G02B6/036 , H04B10/2581 , H04J14/04 , H04Q11/0005 , H04Q2011/0024
摘要： An optical-to-optical inline spatial domain multiplexing (SDM) de-multiplexer for SDM communication comprising a plurality of concentric core layers each having a beveled output end and a cladding layer concentrically surrounding each core layer. The cladding layer has an index that is lower than the index of the core layer it surrounds. Also included is a system for SDM communication comprising at least one optical source to transmit optical energy, an SDM optical carrier fiber to receive optical energy from the source and output a plurality of SDM signals, a SDM de-multiplexer as described above wherein the SDM signals output from the carrier fiber are each incident upon one of the core layers, optical output fibers positioned to couple SDM signals from each cladding layer, and a photodetector communicatively coupled to the outputs of the optical output fibers to couple the SDM signals output from the optical output fibers.
摘要翻译：一种用于SDM通信的光对称在线空间域复用（SDM）解复用器，包括多个同心核心层，每个同心核心层具有倾斜的输出端和围绕每个核心层的包层。包覆层的折射率低于其围绕的芯层的折射率。还包括一种用于SDM通信的系统，其包括至少一个用于传输光能的光源，SDM光载波光纤以从源接收光能并输出多个SDM信号，如上所述的SDM去多路复用器，其中SDM 从载体光纤输出的信号各自入射到核心层之一，定位成耦合来自每个包层的SDM信号的光输出光纤和通信地耦合到光输出光纤的输出的光电检测器，以耦合来自光输出光纤。

7. 发明授权

US11201678B2 System for achieving multiple bits per symbol in optical communications systems by combining spatial domain multiplexing and pulse amplitude modulation 有权
公开(公告)号：US11201678B2
公开(公告)日：2021-12-14
申请号：US17102735
申请日：2020-11-24
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Greg Lovell , Bilas Chowdhury , Ce Su , Han Wang , Rayan Enaya , Engin Eyceyurt
IPC分类号： H04J14/04 , H04J14/02 , H04B10/54 , H04B10/524 , H04B10/25 , H04B10/69
摘要： A modified optical PAM communication system using multiple laser sources to generate each amplitude level. The systems can be applied separately or in conjunction with another modulation system such as SDM, MDM, WDM, TDM, or other communication systems. In an embodiment, a PAM-4 system will increase data rate by a factor of two, but more complicated schemes using more lasers can be utilized to generate higher efficiency schemes. For example, a 25 Gbps NRZ signal will give 50 Gbps PAM-4 signal and higher laser systems can generate PAM-8 or PAM-16 for 75 and 100 Gbps systems respectively. These can be further applied to SDM systems to generate higher data rates equivalent to the number of SDM channels multiplied by the PAM efficiency. In embodiments, the invention may combing PAM with WDM and SDM to achieve multiple bits per symbol.

8. 发明授权

US10998980B2 System for achieving multiple bits per symbol in optical communications systems by combining spatial domain multiplexing and pulse amplitude modulation 有权
公开(公告)号：US10998980B2
公开(公告)日：2021-05-04
申请号：US16367238
申请日：2019-03-27
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Greg Lovell , Bilas Chowdhury , Ce Su , Han Wang , Rayan Enaya , Engin Eyceyurt
IPC分类号： H04B10/54 , H04B10/524 , H04J14/04 , H04B10/25 , H04B10/69
摘要： A modified optical PAM communication system using multiple laser sources to generate each amplitude level. The systems can be applied separately or in conjunction with another modulation system such as SDM, MDM, WDM, TDM, or other communication systems. In an embodiment, a PAM-4 system will increase data rate by a factor of two, but more complicated schemes using more lasers can be utilized to generate higher efficiency schemes. For example, a 25 Gbps NRZ signal will give 50 Gbps PAM-4 signal and higher laser systems can generate PAM-8 or PAM-16 for 75 and 100 Gbps systems respectively. These can be further applied to SDM systems to generate higher data rates equivalent to the number of SDM channels multiplied by the PAM efficiency. In embodiments, the invention may combing PAM with WDM and SDM to achieve multiple bits per symbol.

9. 发明申请

US20160233959A1 METHOD AND APPARATUS FOR MULTIPLEXED OPTICAL COMMUNICATION SYSTEM USING SPATIAL DOMAIN MULTIPLEXING (SDM) AND ORBITAL ANGULAR MOMENTUM OF PHOTON (OAM) MULTIPLEXING WITH WAVELENGTH DIVISION MULTIPLEXING (WDM) 有权
标题翻译：使用空间域多路复用（SDM）和波长（OAM）多波长多路复用（WDM）的光子角度的多光学通信系统的方法和装置
公开(公告)号：US20160233959A1
公开(公告)日：2016-08-11
申请号：US15018370
申请日：2016-02-08
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Saud Alanzi , Bilas Chowdhury
IPC分类号： H04B10/25 , H04J14/08 , H04J14/02
CPC分类号： H04B10/2581 , H04J14/0223 , H04J14/04
摘要： A multiplexed optical communication system comprising a carrier optical fiber, a plurality of launching light sources, and a matching plurality of multiplexer/demultiplexers and photodetectors is described and claimed. Optical communication channel separation by Spatial Domain Multiplexing (SDM), Optical Angular Momentum (OAM) multiplexing, and Wavelength Division Multiplexing (WDM) is used in combination to achieve significant increase in optical communication channel bandwidth over the prior art. The launching light sources may be positioned such that the light beams are incident on the receiving end of the carrier optical fiber at desired angles including complementary angles. Crosstalk between optical communication channels is minimal. The communication bandwidth of a TDM system may be increased by an order of magnitude due the layered WDM/SDM/OAM data multiplexing of the invention.
摘要翻译：描述并要求保护包括载波光纤，多个发射光源和匹配的多个多路复用器/解复用器和光电检测器的复用光通信系统。结合使用通过空间域复用（SDM），光学角动量（OAM）复用和波分复用（WDM）的光通信信道分离，以实现现有技术中光通信信道带宽的显着增加。发射光源可以被定位成使得光束以包括互补角度的所需角度入射在载体光纤的接收端。光通信信道之间的串扰很小。由于本发明的分层WDM / SDM / OAM数据复用，TDM系统的通信带宽可能增加一个数量级。

10. 发明申请

US20150333828A1 OMNIDIRECTIONAL FREE SPACE OPTICAL COMMUNICATIONS RECEIVER 有权
标题翻译： OMNIDIRECTIONAL自由空间光通信接收器
公开(公告)号：US20150333828A1
公开(公告)日：2015-11-19
申请号：US14700012
申请日：2015-04-29
申请人： Florida Institute of Technology, Inc.
发明人： Syed H. Murshid , Michael F. Finch
IPC分类号： H04B10/11
CPC分类号： H04B10/1121 , H04B10/11
摘要： A free space optical receiver comprising a photodetector and a fiber bundle. The fiber bundle comprises a plurality of optical fibers splayed apart at one of their ends to receive free space optical energy from multiple directions. The splayed apart ends of the plurality of optical fibers may create a hemispherical shape. Each of the plurality of optical fibers has an acceptance cone for which it couples optical energy into the splayed end of the optical fiber. The acceptance cones of the splayed ends of the plurality of optical fibers may overlap to form an omnidirectional acceptance zone. The other, non-splayed ends of the plurality of optical fibers are communicatively coupled to the photodetector, which is positioned to receive the free space optical energy from the non-splayed ends of the plurality of optical fibers. An optical communication system including the free space optical receiver is also described.
摘要翻译：一种包括光电检测器和光纤束的自由空间光接收器。纤维束包括在其一端分开展开的多根光纤，以从多个方向接收自由空间光能。多个光纤的分开的端部可以形成半球形。多个光纤中的每一个具有将光能耦合到光纤的展开端的接收锥。多个光纤的展开端的接收锥可以重叠以形成全向接受区。多个光纤的另一个未张开的端部通信地耦合到光电检测器，该光电检测器被定位成从多个光纤的未展开的端部接收自由空间的光能。还描述了包括自由空间光接收机的光通信系统。

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