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1. 发明授权

US09094129B2 Dual-drive modulator 有权
标题翻译：双驱动调制器
公开(公告)号：US09094129B2
公开(公告)日：2015-07-28
申请号：US13630831
申请日：2012-09-28
申请人： Infinera Corporation
发明人： David James Krause
IPC分类号： H04B10/50 , H04B10/516 , H04B10/588
CPC分类号： H04B10/516 , H04B10/5053 , H04B10/588
摘要： A transmitter module includes a processor configured to receive input data, and determine input values corresponding to the input data; a digital-to-analog converter configured to receive the input values from the processor, and generate first and second voltage signals based on the input values; a laser configured to output light; a Mach-Zehnder modulator configured to receive the light from the laser and the first and second voltage signals from the digital-to-analog converter, and modulate the light based on the first and second voltage signals to generate a modulated optical signal that includes distortion; and a filter configured to receive the modulated optical signal from the modulator, process the modulated optical signal to reduce or eliminate the distortion and produce an output optical signal, and output the output optical signal.
摘要翻译：发射机模块包括被配置为接收输入数据并确定与输入数据相对应的输入值的处理器; 配置为从处理器接收输入值的数/模转换器，并且基于输入值产生第一和第二电压信号; 配置为输出光的激光器; 马赫 - 曾德尔调制器，被配置为接收来自激光器的光和来自数模转换器的第一和第二电压信号，并且基于第一和第二电压信号调制光，以产生包括失真的调制光信号 ; 以及滤波器，被配置为从调制器接收调制的光信号，处理调制的光信号以减少或消除失真并产生输出光信号，并输出输出光信号。

2. 发明申请

US20140093253A1 DUAL-DRIVE MODULATOR 有权
标题翻译：双驱动调制器
公开(公告)号：US20140093253A1
公开(公告)日：2014-04-03
申请号：US13630831
申请日：2012-09-28
申请人： INFINERA CORPORATION
发明人： David James Krause
IPC分类号： H04B10/516
CPC分类号： H04B10/516 , H04B10/5053 , H04B10/588
摘要： A transmitter module includes a processor configured to receive input data, and determine input values corresponding to the input data; a digital-to-analog converter configured to receive the input values from the processor, and generate first and second voltage signals based on the input values; a laser configured to output light; a Mach-Zehnder modulator configured to receive the light from the laser and the first and second voltage signals from the digital-to-analog converter, and modulate the light based on the first and second voltage signals to generate a modulated optical signal that includes distortion; and a filter configured to receive the modulated optical signal from the modulator, process the modulated optical signal to reduce or eliminate the distortion and produce an output optical signal, and output the output optical signal.
摘要翻译：发射机模块包括被配置为接收输入数据并确定与输入数据相对应的输入值的处理器; 配置为从处理器接收输入值的数/模转换器，并且基于输入值产生第一和第二电压信号; 配置为输出光的激光器; 马赫 - 曾德尔调制器，被配置为接收来自激光器的光和来自数模转换器的第一和第二电压信号，并且基于第一和第二电压信号调制光，以产生包括失真的调制光信号 ; 以及滤波器，被配置为从调制器接收调制的光信号，处理调制的光信号以减少或消除失真并产生输出光信号，并输出输出光信号。

3. 发明申请

US20190253153A1 REDUCTION OF PDL PENALTY USING TRANSMIT SIGNAL PROCESSING ON SUB-CARRIER MULTIPLEXED SIGNALS 审中-公开
公开(公告)号：US20190253153A1
公开(公告)日：2019-08-15
申请号：US16158224
申请日：2018-10-11
申请人： Infinera Corporation
发明人： Han Henry Sun , David James Krause , Kuang-Tsan Wu
IPC分类号： H04B10/61 , H04B10/516 , H04B10/532 , H04J14/06
CPC分类号： H04B10/6162 , H04B10/5161 , H04B10/532 , H04J14/06
摘要： Consistent with the present disclosure, a transmitter is provided that include a modulator and a laser. The modulator is driven based on outputs from a digital signal processor (DSP), such that the modulator outputs a modulated optical signal including a plurality of subcarriers. Each subcarrier includes an x pol component and a y pol component, but certain subcarriers may have an effective x pol and y pol rotations compared to other subcarriers. The amount of rotation may be determined by a polarization rotation circuit that supplies inputs to the DSP (alternatively the polarization rotation circuit may be part of the DSP). Accordingly, regardless of the orientation of PDL in an optical link, certain subcarriers may have lower overall Q (a parameter related to the signal-to-noise ratio (SNR)) while others may have a higher Q, such that the average Q over all the subcarriers in a modulated optical signal is higher than if each subcarrier has the same x pol and y pol orientations. In one example, a PDL penalty (reduction in Q due to the PDL, for example) may be reduced by 0.5 dB and, in other examples, the PDL penalty may be reduced by 1.0 dB. Overall improved SNR for the modulated optical signal including a plurality of subcarriers may also be achieved.

4. 发明授权

US10014975B2 Channel carrying multiple digital subcarriers 有权
公开(公告)号：US10014975B2
公开(公告)日：2018-07-03
申请号：US13630630
申请日：2012-09-28
申请人： Infinera Corporation
发明人： David James Krause , Han Sun , Yuejian Wu , John D. McNicol , Kuang-Tsan Wu
IPC分类号： H04J3/04 , H04J14/02
CPC分类号： H04J14/0298 , H04J14/02
摘要： An optical system includes a transmitter module and/or a receiver module. The transmitter module is configured to receive input data, map the input data to a set of subcarriers associated with an optical communication channel, independently apply spectral shaping to each of the subcarriers, generate input values based on the spectral shaping of each of the subcarriers, generate voltage signals based on the input values, modulate light based on the voltage signals to generate an output optical signal that includes the subcarriers, and output the output optical signal. The receiver module is configured to receive the output optical signal, convert the output optical signal to a set of voltage signals, generate digital samples based on the set of voltage signals, independently process the digital samples for each of the subcarriers, map the processed digital samples to produce output data, and output the output data.

5. 发明申请

US20140092924A1 CHANNEL CARRYING MULTIPLE DIGITAL SUBCARRIERS 有权
标题翻译：频道携带多个数字小孩
公开(公告)号：US20140092924A1
公开(公告)日：2014-04-03
申请号：US13630630
申请日：2012-09-28
申请人： INFINERA CORPORATION
发明人： David James Krause , Han Sun , Yuejian Wu , John McNicol , Kuang-Tsan Wu
IPC分类号： H04J14/02
CPC分类号： H04J14/0298 , H04J14/02
摘要： An optical system includes a transmitter module and/or a receiver module. The transmitter module is configured to receive input data, map the input data to a set of subcarriers associated with an optical communication channel, independently apply spectral shaping to each of the subcarriers, generate input values based on the spectral shaping of each of the subcarriers, generate voltage signals based on the input values, modulate light based on the voltage signals to generate an output optical signal that includes the subcarriers, and output the output optical signal. The receiver module is configured to receive the output optical signal, convert the output optical signal to a set of voltage signals, generate digital samples based on the set of voltage signals, independently process the digital samples for each of the subcarriers, map the processed digital samples to produce output data, and output the output data.
摘要翻译：光学系统包括发射机模块和/或接收机模块。发射机模块被配置为接收输入数据，将输入数据映射到与光通信信道相关联的一组子载波，独立地对每个子载波进行频谱整形，基于每个子载波的频谱整形生成输入值，基于输入值产生电压信号，基于电压信号调制光，以产生包括子载波的输出光信号，并输出输出光信号。接收器模块被配置为接收输出光信号，将输出光信号转换成一组电压信号，基于该组电压信号生成数字采样，独立处理每个子载波的数字样本，将处理的数字采样产生输出数据，并输出输出数据。

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