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1. 发明授权

US11362738B2 Individually routable digital subcarriers 有权
公开(公告)号：US11362738B2
公开(公告)日：2022-06-14
申请号：US16870502
申请日：2020-05-08
申请人： Kuang-Tsan Wu , Matthew L. Mitchell
发明人： Kuang-Tsan Wu , Matthew L. Mitchell
IPC分类号： H04B10/61 , H04B10/40 , H04J14/06 , H04B10/50 , H04B10/548 , H04B10/54 , H04J14/02 , H04B10/67 , H04B10/69
摘要： Consistent with an aspect of the present disclosure, electrical signals or digital subcarriers are generated in a DSP based on independent input data streams. Drive signals are generated based on the digital subcarriers, and such drive signals are applied to an optical modulator, including, for example, a Mach-Zehnder modulator. The optical modulator modulates light output from a laser based on the drive signals to supply optical subcarriers corresponding to the digital subcarriers. These optical subcarriers may be received by optical receivers provided at different locations in an optical communications network, where the optical subcarrier may be processed, and the input data stream associated with such optical subcarrier is output. Accordingly, instead of providing multiple lasers and modulators, for example, data is carried by individual subcarriers output from an optical source including one laser and modulator. Thus, a cost associated with the network may be reduced. Moreover, each of the subcarriers may be detected by a corresponding one of a plurality of receivers, each of which being provided in a different location in the optical communication network. Thus, receivers need not be co-located, such that the network has improved flexibility.

2. 发明授权

US10742328B2 Individually routable digital subcarriers 有权
公开(公告)号：US10742328B2
公开(公告)日：2020-08-11
申请号：US16155624
申请日：2018-10-09
申请人： Kuang-Tsan Wu , Matthew L. Mitchell
发明人： Kuang-Tsan Wu , Matthew L. Mitchell
IPC分类号： H04B10/61 , H04B10/40 , H04B10/50 , H04B10/548 , H04B10/54 , H04J14/02 , H04B10/67 , H04B10/69 , H04J14/06
摘要： Consistent with an aspect of the present disclosure, electrical signals or digital subcarriers are generated in a DSP based on independent input data streams. Drive signals are generated based on the digital subcarriers, and such drive signals are applied to an optical modulator, including, for example, a Mach-Zehnder modulator. The optical modulator modulates light output from a laser based on the drive signals to supply optical subcarriers corresponding to the digital subcarriers. These optical subcarriers may be received by optical receivers provided at different locations in an optical communications network, where the optical subcarrier may be processed, and the input data stream associated with such optical subcarrier is output. Accordingly, instead of providing multiple lasers and modulators, for example, data is carried by individual subcarriers output from an optical source including one laser and modulator. Thus, a cost associated with the network may be reduced. Moreover, each of the subcarriers may be detected by a corresponding one of a plurality of receivers, each of which being provided in a different location in the optical communication network. Thus, receivers need not be co-located, such that the network has improved flexibility.

3. 发明申请

US20200313775A1 INDIVIDUALLY ROUTABLE DIGITAL SUBCARRIERS 审中-公开
公开(公告)号：US20200313775A1
公开(公告)日：2020-10-01
申请号：US16870502
申请日：2020-05-08
申请人： Kuang-Tsan Wu , Matthew L. Mitchell
发明人： Kuang-Tsan Wu , Matthew L. Mitchell
IPC分类号： H04B10/61 , H04B10/40 , H04J14/06 , H04B10/50 , H04B10/548 , H04B10/54 , H04J14/02 , H04B10/67 , H04B10/69
摘要： Consistent with an aspect of the present disclosure, electrical signals or digital subcarriers are generated in a DSP based on independent input data streams. Drive signals are generated based on the digital subcarriers, and such drive signals are applied to an optical modulator, including, for example, a Mach-Zehnder modulator. The optical modulator modulates light output from a laser based on the drive signals to supply optical subcarriers corresponding to the digital subcarriers. These optical subcarriers may be received by optical receivers provided at different locations in an optical communications network, where the optical subcarrier may be processed, and the input data stream associated with such optical subcarrier is output. Accordingly, instead of providing multiple lasers and modulators, for example, data is carried by individual subcarriers output from an optical source including one laser and modulator. Thus, a cost associated with the network may be reduced. Moreover, each of the subcarriers may be detected by a corresponding one of a plurality of receivers, each of which being provided in a different location in the optical communication network. Thus, receivers need not be co-located, such that the network has improved flexibility.

4. 发明授权

US09099833B2 Multiplexer having ASE suppression 有权
标题翻译：具有ASE抑制功能的多路复用器
公开(公告)号：US09099833B2
公开(公告)日：2015-08-04
申请号：US14145768
申请日：2013-12-31
申请人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
发明人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
IPC分类号： H04J14/02 , H01S3/00 , H01S3/067
CPC分类号： H04J14/0201 , H04B10/506 , H04J14/0212
摘要： Consistent with the present disclosure, optical filters are provided in a reconfigurable optical add-drop multiplexer (ROADM). In one example, groups of optical signals are amplified by corresponding erbium-doped fiber amplifiers (EDFAs) and supplied to each optical filter, which has a passband that includes the wavelengths associated with the received optical signal group. Light at wavelengths outside the passband of each optical filter, such as amplified stimulated emission (ASE) light generated by a respective EDFA, is significantly attenuated. Each optical signal group, after such amplification and filtering may then be switched and combined in a multicast switch before being directed toward a desired optical communication path. When, for example, first and second optical signal groups are combined, however, the first optical signal group is accompanied by little or no ASE light at the second optical signal group wavelengths. In addition, the second optical signal group is not accompanied by significant ASE light at the first optical signal group wavelengths. Accordingly, the first and second optical signal groups have less noise than would otherwise be present in the absence of the optical filters, and bit error rates associated with the optical signal groups are reduced.
摘要翻译：根据本公开，光学滤波器被提供在可重新配置的光分插复用器（ROADM）中。在一个示例中，光信号组由相应的掺铒光纤放大器（EDFA）放大并提供给每个滤光器，每个滤光器具有包含与所接收的光信号组相关联的波长的通带。每个滤光器的通带外的波长处的光，例如由相应EDFA产生的放大的受激发射（ASE）光的光被显着衰减。在这样的放大和滤波之后，每个光信号组然后可以在指向所需的光通信路径之前在多播交换机中进行切换和组合。然而，当例如第一和第二光学信号组合时，第二光学信号组在第二个光学信号组波长处伴随很少或没有ASE光。此外，第二光信号组在第一光信号组波长处不伴有显着的ASE光。因此，第一和第二光信号组具有比在不存在滤光器时将存在的噪声更小的噪声，并且与光信号组相关联的比特错误率降低。

5. 发明授权

US08861977B2 Multiplexer and modulation arrangements for multi-carrier optical modems 有权
标题翻译：多载波光调制解调器的多路复用器和调制方案
公开(公告)号：US08861977B2
公开(公告)日：2014-10-14
申请号：US13078888
申请日：2011-04-01
申请人： John D. McNicol , Matthew L. Mitchell , David F. Welch
发明人： John D. McNicol , Matthew L. Mitchell , David F. Welch
IPC分类号： H04J14/00 , H04J14/06 , H04J14/02
CPC分类号： H04J14/02 , H04J14/0256 , H04J14/026 , H04J14/06
摘要： A number of carriers are selected according to a modulation format and symbol rate to realize a superchannel having fixed capacity, for example. At a receive node, the superchannel is optically demultiplexed from a plurality of other superchannels. The plurality of carriers are then supplied to a photodetector circuit, which receives additional light at one of the optical signal carrier wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of the carriers is unnecessary.
摘要翻译：根据调制格式和符号率来选择多个载波，以实现例如具有固定容量的超频道。在接收节点处，超级信道从多个其他超级信道被光解复用。然后将多个载波提供给光电检测器电路，该电路从本地振荡器激光器接收来自光信号载波波长的其中一个附加光。在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。然后在电域中对ADC的输出进行滤波，使得载波的光解复用是不必要的。

6. 发明授权

US08750722B2 Upgradable WDM system 有权
标题翻译：可升级WDM系统
公开(公告)号：US08750722B2
公开(公告)日：2014-06-10
申请号：US12978467
申请日：2010-12-24
申请人： Vinayak Dangui , Matthew L. Mitchell
发明人： Vinayak Dangui , Matthew L. Mitchell
IPC分类号： H04B10/04
CPC分类号： H04J14/0279 , H04B10/5161 , H04J14/0224 , H04J14/0256 , H04J14/0257
摘要： Consistent with the present disclosure, a wavelength division multiplexed (WDM) optical communication system including on-off-keying (OOK) transmitters, for example, may be upgraded to include advanced modulation format transmitters, such as quadrature phase shift keying (QPSK) transmitters. Rather than replace all the OOK transmitters with QPSK transmitters at once, each OOK transmitter is replaced with a lower rate modulation format transmitter, such as a binary phase shift keying (BPSK) transmitter, as capacity needs increase. The BPSK transmitters supply (BPSK) optical signals that are more tolerant of noise caused by cross phase modulation (XPM) induced by OOK signals. Accordingly, such BPSK optical signals have fewer associated data detection errors in the receiver. Moreover, BPSK modulated optical signals induce little XPM-related noise in co-propagating QPSK modulated optical signals. Thus, once the OOK transmitters have been replaced with the BPSK transmitters, the BPSK transmitters may be replaced with QPSK transmitters or controlled to output QPSK modulated optical signals, as capacity need further increase, and such QPSK modulated optical signals may be transmitted with fewer errors.
摘要翻译：根据本公开，例如可以升级包括开关键（OOK）发射机的波分复用（WDM）光通信系统，以包括高级调制格式发射机，例如正交相移键控（QPSK）发射机。而不是立即用QPSK发射机替换所有的OOK发射机，每个OOK发射机被替换为较低速率的调制格式发射机，例如二进制相移键控（BPSK）发射机，因为容量需要增加。 BPSK发射机供应（BPSK）光信号，其更容忍由OOK信号引起的交叉相位调制（XPM）引起的噪声。因此，这种BPSK光信号在接收机中具有较少的相关联的数据检测误差。此外，BPSK调制光信号在共同传播的QPSK调制光信号中引起很少的XPM相关噪声。因此，一旦OOK发射机已经被BPSK发射机替代，BPSK发射机可以被QPSK发射机替代，或者被控制输出QPSK调制的光信号，因为容量需要进一步增加，并且这样的QPSK调制的光信号可以以较少的错误发射。

7. 发明申请

US20130279911A1 RAMAN PUMP CIRCUIT 有权
标题翻译：拉曼泵电路
公开(公告)号：US20130279911A1
公开(公告)日：2013-10-24
申请号：US13449532
申请日：2012-04-18
申请人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, JR.
发明人： Mehrdad Ziari , Scott Corzine , Masaki Kato , Michael Francis Van Leeuwen , Radhakrishnan L. Nagarajan , Matthew L. Mitchell , Fred A. Kish, JR.
IPC分类号： H04J14/06 , H01S3/30
CPC分类号： H04B10/2916 , H01S3/094073 , H01S3/302 , H01S5/005 , H01S5/4012
摘要： A Raman pump may include a dual output laser configured to output two optical signals; a delay interferometer configured to delay a first of the two optical signals to decorrelate the two optical signals from each other; and a combiner configured to combine the delayed first of the two optical signals and a second of the two optical signals to provide a Raman amplification signal.
摘要翻译：拉曼泵可以包括配置成输出两个光信号的双输出激光器; 延迟干涉仪被配置为延迟两个光信号中的第一个以将两个光信号相互去相关; 以及组合器，其被配置为组合两个光信号中延迟的第一个和两个光信号中的第二个，以提供拉曼放大信号。

8. 发明授权

US07512295B2 Transmitter photonic integrated circuits (TXPICS) with directly modulated lasers and wavelength selective combiners 有权
标题翻译：具有直接调制激光器和波长选择组合器的发射机光子集成电路（TXPICS）
公开(公告)号：US07512295B2
公开(公告)日：2009-03-31
申请号：US11766077
申请日：2007-06-20
申请人： David F. Welch , Vincent G. Dominic , Fred A. Kish, Jr. , Mark J. Missey , Radhakrishnan L. Nagarajan , Atul Mathur , Frank H. Peters , Robert B. Taylor , Matthew L. Mitchell , Alan C. Nilsson , Stephen G. Grubb , Richard P. Schneider , Charles H. Joyner , Jonas Webjorn , Drew D. Perkins
发明人： David F. Welch , Vincent G. Dominic , Fred A. Kish, Jr. , Mark J. Missey , Radhakrishnan L. Nagarajan , Atul Mathur , Frank H. Peters , Robert B. Taylor , Matthew L. Mitchell , Alan C. Nilsson , Stephen G. Grubb , Richard P. Schneider , Charles H. Joyner , Jonas Webjorn , Drew D. Perkins
IPC分类号： G02B6/12
CPC分类号： G02B6/12011 , B82Y20/00 , G01R31/31728 , G01R31/318511 , G02B6/12004 , G02B6/12007 , G02B6/12019 , G02B6/12021 , G02B6/12023 , G02B6/12026 , G02B6/12028 , G02B6/12033 , G02B6/131 , G02B6/136 , G02B6/4204 , G02F1/01725 , G02F2001/0175 , G02F2001/01758 , G02F2203/69 , H01L31/125 , H01S5/0014 , H01S5/0085 , H01S5/02248 , H01S5/026 , H01S5/0262 , H01S5/0264 , H01S5/0265 , H01S5/0268 , H01S5/06256 , H01S5/06258 , H01S5/0683 , H01S5/06832 , H01S5/12 , H01S5/1228 , H01S5/2077 , H01S5/22 , H01S5/3408 , H01S5/4031 , H01S5/4087 , H01S5/50 , H04B10/2914 , H04B10/50 , H04J14/02 , H04J14/0246 , H04J14/025 , H04J14/0258 , H04J14/0265 , H04J14/0276 , H04J14/0282
摘要： A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to received all the signal outputs from the modulated sources and provide a combined output signal on an output waveguide from the chip. The modulated sources, combiner and output waveguide are all integrated on the same chip.
摘要翻译：一种包括调制源阵列的光子集成电路（PIC）芯片，每个调制源提供在不同于其它调制源的信道波长的信道波长处的调制信号输出，以及具有光耦合到接收到的所有信号输出的输入的波长选择性组合器并从芯片提供输出波导上的组合输出信号。调制源，组合器和输出波导均集成在同一芯片上。

9. 发明申请

US20150188276A1 MULTIPLEXER HAVING ASE SUPPRESSION 有权
标题翻译：具有ASE抑制功能的多路复用器
公开(公告)号：US20150188276A1
公开(公告)日：2015-07-02
申请号：US14145768
申请日：2013-12-31
申请人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
发明人： Matthew L. Mitchell , Zhong Pan , Michael F. Van Leeuwen
IPC分类号： H01S3/00 , H01S3/067
CPC分类号： H04J14/0201 , H04B10/506 , H04J14/0212
摘要： Consistent with the present disclosure, optical filters are provided in a reconfigurable optical add-drop multiplexer (ROADM). In one example, groups of optical signals are amplified by corresponding erbium-doped fiber amplifiers (EDFAs) and supplied to each optical filter, which has a passband that includes the wavelengths associated with the received optical signal group. Light at wavelengths outside the passband of each optical filter, such as amplified stimulated emission (ASE) light generated by a respective EDFA, is significantly attenuated. Each optical signal group, after such amplification and filtering may then be switched and combined in a multicast switch before being directed toward a desired optical communication path. When, for example, first and second optical signal groups are combined, however, the first optical signal group is accompanied by little or no ASE light at the second optical signal group wavelengths. In addition, the second optical signal group is not accompanied by significant ASE light at the first optical signal group wavelengths. Accordingly, the first and second optical signal groups have less noise than would otherwise be present in the absence of the optical filters, and bit error rates associated with the optical signal groups are reduced.
摘要翻译：根据本公开，光学滤波器被提供在可重新配置的光分插复用器（ROADM）中。在一个示例中，光信号组由相应的掺铒光纤放大器（EDFA）放大并提供给每个滤光器，每个滤光器具有包含与所接收的光信号组相关联的波长的通带。每个滤光器的通带外的波长处的光，例如由相应EDFA产生的放大的受激发射（ASE）光的光被显着衰减。在这样的放大和滤波之后，每个光信号组然后可以在指向所需的光通信路径之前在多播交换机中进行切换和组合。然而，当例如第一和第二光学信号组合时，第二光学信号组在第二个光学信号组波长处伴随很少或没有ASE光。此外，第二光信号组在第一光信号组波长处不伴有显着的ASE光。因此，第一和第二光信号组具有比在不存在滤光器时将存在的噪声更小的噪声，并且与光信号组相关联的比特错误率降低。

10. 发明授权

US08873964B2 Optical autodiscovery for automated logical and physical connectivity check between optical modules 有权
标题翻译：光学自动发现用于光学模块之间的自动逻辑和物理连接检查
公开(公告)号：US08873964B2
公开(公告)日：2014-10-28
申请号：US13017779
申请日：2011-01-31
申请人： Matthew L. Mitchell , Robert B. Taylor , Alan C. Nilsson , Steven Joseph Hand , Daniel P. Murphy
发明人： Matthew L. Mitchell , Robert B. Taylor , Alan C. Nilsson , Steven Joseph Hand , Daniel P. Murphy
IPC分类号： H04J14/02
CPC分类号： H04J14/0227 , H04J14/0221 , H04J14/0241 , H04J14/0258 , H04J14/0264 , H04J14/0265 , H04J14/0275 , H04J14/0276
摘要： Optical autodiscovery is provide between two optical modules to insure that when an optical signal is coupled between the two optical module, the optical signal from a first module does not interfere with operation of a second module. The autodiscovery is implemented by sending an optical identification signal from the first optical module via the coupling to the second optical module from which signal, the second optical module can verify and determined acceptance of the coupled first optical module. During this autodiscovery process, the optical identification signal from the first optical module may be attenuated or shifted in optical spectrum so as not to interfere with the operation of the second optical module. Autodiscovery may also be employed in cases where a first optical module is to receive an optical signal from a second module.
摘要翻译：在两个光学模块之间提供光学自动发现，以确保当光信号耦合在两个光学模块之间时，来自第一模块的光信号不会干扰第二模块的操作。通过从第一光学模块经由耦合向第二光学模块发送光学识别信号来实现自动发现，第二光学模块可从该第二光学模块验证和确定耦合的第一光学模块的接受。在该自动发现处理中，来自第一光模块的光学识别信号可以在光谱中被衰减或移位，从而不会干扰第二光模块的操作。在第一光模块将从第二模块接收光信号的情况下也可以采用自动发现。

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