公开(公告)号：US09967036B2

公开(公告)日：2018-05-08

申请号：US14699093

申请日：2015-04-29

Applicant: Juniper Networks, Inc.

Inventor： Christian Malouin ,  Theodore John Schmidt ,  Bo Zhang ,  Elias Simpson ,  Roberto Marcoccia

IPC: H04B10/61 ,  H04L7/00 ,  H04B10/40 ,  H04J14/06 ,  H04L27/227

CPC classification number: H04B10/6161 ,  H04B10/40 ,  H04B10/616 ,  H04B10/6166 ,  H04J14/06 ,  H04L7/0075 ,  H04L27/2273

Abstract: This disclosure describes techniques to sample electrical data streams in coherent receivers. For instance, an analog-to-digital converter (ADC) samples the received electrical data stream at a sampling rate that is nominally twice or greater than twice the symbol rate of the electrical data stream that the ADC receives. A digital filter receives the digital data stream from the ADC, and digitally filters the digital data streams to output a filtered digital electrical data stream at an effective sampling rate that is less than the sampling rate and less than twice the symbol rate, and greater than or equal to the symbol rate.

公开(公告)号：US20180062753A1

公开(公告)日：2018-03-01

申请号：US15255078

申请日：2016-09-01

Applicant: Juniper Networks, Inc.

Inventor： Yang Yue ,  Bo Zhang ,  Qiang Wang

IPC: H04B10/54 ,  H04B10/564

CPC classification number: H04B10/541 ,  H04B10/5053 ,  H04B10/564

Abstract: In some embodiments, an apparatus includes a quadrature amplitude modulation (QAM) optical modulator which includes a first phase modulator (PM), a second PM, a tunable optical coupler (TOC), and an optical combiner (OC). The TOC is configured to split a light wave at an adjustable power splitting ratio to produce a first split light wave and a second split light wave. The first PM is configured to modulate the first split light wave in response to a first multi-level electrical signal to produce a first modulated light wave. The second PM is configured to modulate the second split light wave in response to a second multi-level electrical signal to produce a second modulated light wave. The OC is then configured to combine the first modulated light wave and the second modulated light wave to generate a QAM optical signal.

公开(公告)号：US09806812B1

公开(公告)日：2017-10-31

申请号：US15252923

申请日：2016-08-31

Applicant: Juniper Networks, Inc.

Inventor： Theodore J. Schmidt ,  Bo Zhang ,  Murat Arabaci ,  Roberto Marcoccia ,  Christian Malouin ,  Steven William Keck

IPC: H04B10/50 ,  H04B10/2507

CPC classification number: H04B10/2507 ,  H04B10/5055 ,  H04B10/5057 ,  H04B10/50572 ,  H04B10/588

Abstract: In some embodiments, an apparatus includes an optical transmitter module that can be electrically coupled to an electrical serializer/deserializer and a controller. The optical transmitter module can include an electrical detector that can receive an in-band signal. The electrical detector can send to the controller a first power error signal and a second power error signal based on the in-band signal. The controller can send a correction control signal to the electrical serializer/deserializer based on the first power error signal and the second power error signal such that the electrical serializer/deserializer sends a pre-emphasized signal to the optical transmitter module based on the correction control signal. In such embodiments, the first power error signal, the second power signal and the correction control signal are out-of-band signals.

公开(公告)号：US09407361B1

公开(公告)日：2016-08-02

申请号：US13711861

申请日：2012-12-12

Applicant: JUNIPER NETWORKS, INC.

Inventor： Bo Zhang ,  Theodore J. Schmidt ,  Christian Malouin

IPC: H04B10/532 ,  H04J14/06 ,  H04B10/556 ,  H04B10/079

CPC classification number: H04B10/564 ,  H04B10/07955 ,  H04B10/50575 ,  H04B10/532 ,  H04B10/541 ,  H04B10/5561 ,  H04J14/06

Abstract: A system is configured to determine a first power level of a first signal output from a first modulator, and determine a second power level of a second signal output from a second modulator. The first signal may include a first optical signal associated with a particular polarization orientation, and the second signal may include a second optical signal associated with the particular polarization orientation. The system is configured to determine a relationship between the first power level and the second power level, and to set, based on the relationship between the first power level and the second power level, a reverse bias voltage associated with the first modulator, where the reverse bias voltage may be used to control the first power level of the first signal.

Abstract translation: 系统被配置为确定从第一调制器输出的第一信号的第一功率电平，并确定从第二调制器输出的第二信号的第二功率电平。 第一信号可以包括与特定偏振取向相关联的第一光信号，并且第二信号可以包括与特定偏振取向相关联的第二光信号。 该系统被配置为确定第一功率电平和第二功率电平之间的关系，并且基于第一功率电平和第二功率电平之间的关系来设置与第一调制器相关联的反向偏置电压，其中 可以使用反向偏置电压来控制第一信号的第一功率电平。

公开(公告)号：US20150341121A1

公开(公告)日：2015-11-26

申请号：US14816977

申请日：2015-08-03

Applicant: Juniper Networks, Inc.

Inventor： Yang YUE ,  Bo Zhang ,  Robert C. Lofland ,  Jason T. O'Neil ,  Qiang Wang ,  Jon J. Anderson

IPC: H04B10/532

CPC classification number: H04B10/532 ,  H04B10/5053 ,  H04B10/5057

Abstract: An optical device may include a modulator. The modulator may receive an optical signal. The modulator may modulate the optical signal to include a first channel and a second channel. The modulator may modulate the optical signal based on a training pattern associated with detecting a skew. The modulator may cause the first channel to interfere with the second channel. The modulator may perform a power measurement on the first channel and the second channel. The modulator may determine the skew based on the power measurement and the training pattern. The modulator may time delay the first channel or the second channel to align the skew based on the skew.

Abstract translation: 光学装置可以包括调制器。 调制器可以接收光信号。 调制器可以调制光信号以包括第一通道和第二通道。 调制器可以基于与检测偏斜相关联的训练模式来调制光信号。 调制器可能导致第一通道干扰第二通道。 调制器可以在第一通道和第二通道上执行功率测量。 调制器可以基于功率测量和训练模式来确定偏斜。 调制器可以基于偏斜来延迟第一通道或第二通道以对准偏斜。

公开(公告)号：US09184834B1

公开(公告)日：2015-11-10

申请号：US13730193

申请日：2012-12-28

Applicant: Juniper Networks, Inc.

Inventor： Bo Zhang ,  Theodore J. Schmidt ,  Steven Keck ,  Christian Malouin

IPC: H04B10/04 ,  H04B10/077 ,  H04B10/556 ,  H04L27/36 ,  H04B10/50

CPC classification number: H04L27/36 ,  H04B10/0775 ,  H04B10/5053 ,  H04B10/5057 ,  H04B10/50572 ,  H04B10/50577 ,  H04B10/541 ,  H04B10/5561 ,  H04L27/364

Abstract: In some embodiments, an apparatus includes an optical transmitter system that defines an interferometric structure and has an in-phase portion and a quadrature portion. The optical transmitter system has a transmission configuration and a calibration configuration. The interferometric structure can produce an output associated with a skew between the in-phase portion and the quadrature portion of the optical transmitter system when in the calibration configuration. The skew is associated with a digital domain, an analog domain and an optical domain of the optical transmitter system.

Abstract translation: 在一些实施例中，一种装置包括限定干涉结构并具有同相部分和正交部分的光发送器系统。 光发射机系统具有传输配置和校准配置。 当在校准配置中时，干涉测量结构可以产生与光发射机系统的同相部分和正交部分之间的偏斜相关联的输出。 偏斜与光发射机系统的数字域，模拟域和光域相关联。

公开(公告)号：US10560194B2

公开(公告)日：2020-02-11

申请号：US16263897

申请日：2019-01-31

Applicant: Juniper Networks, Inc.

Inventor： Bo Zhang ,  Theodore J. Schmidt ,  Christian Malouin

IPC: H04B10/532 ,  H04J14/06 ,  H04B10/564 ,  H04B10/079 ,  H04B10/556 ,  H04B10/50 ,  H04B10/54

Abstract: A system is configured to determine a first power level of a first signal output from a first modulator, and determine a second power level of a second signal output from a second modulator. The first signal may include a first optical signal associated with a particular polarization orientation, and the second signal may include a second optical signal associated with the particular polarization orientation. The system is configured to determine a relationship between the first power level and the second power level, and to set, based on the relationship between the first power level and the second power level, a reverse bias voltage associated with the first modulator, where the reverse bias voltage may be used to control the first power level of the first signal.

公开(公告)号：US09240843B1

公开(公告)日：2016-01-19

申请号：US13730246

申请日：2012-12-28

Applicant: Juniper Networks, Inc.

Inventor： Christian Malouin ,  Philip A. Thomas ,  Murat Arabaci ,  Bo Zhang ,  Theodore J. Schmidt ,  Roberto Marcoccia

IPC: H04B10/06 ,  H04B10/61

CPC classification number: H04B10/616

Abstract: In some embodiments, an apparatus includes a coherent optical receiver that can receive during a first time period a set of in-phase signals and a set of quadrature signals having a skew from the set of in-phase signals. The coherent receiver can blindly determine a delay between the set of in-phase signals and the set of quadrature signals based on the set of in-phase signals and the set of quadrature signals. The delay includes an intersymbol portion and an intrasymbol portion. The coherent optical receiver can apply the delay at a second time after the first time period such that a skew after the second time is less than the skew at the first time period.

Abstract translation: 在一些实施例中，一种装置包括相干光接收机，其可以在第一时间周期期间接收一组同相信号和一组正交信号，该组正交信号具有来自该组同相信号的偏斜。 相干接收机可以基于同相信号和正交信号集合盲目地确定同相信号组和正交信号组之间的延迟。 延迟包括符号间部分和内符号部分。 相干光接收机可以在第一时间段之后的第二时间施加延迟，使得第二时间之后的偏斜小于第一时间段的偏斜。

公开(公告)号：US20150236795A1

公开(公告)日：2015-08-20

申请号：US14699093

申请日：2015-04-29

Applicant: Juniper Networks, Inc.

Inventor： Christian Malouin ,  Theodore John Schmidt ,  Bo Zhang ,  Elias Simpson ,  Roberto Marcoccia

IPC: H04B10/61 ,  H04L27/227 ,  H04J14/06 ,  H04L7/00 ,  H04B10/40

CPC classification number: H04B10/6161 ,  H04B10/40 ,  H04B10/616 ,  H04B10/6166 ,  H04J14/06 ,  H04L7/0075 ,  H04L27/2273

Abstract: This disclosure describes techniques to sample electrical data streams in coherent receivers. For instance, an analog-to-digital converter (ADC) samples the received electrical data stream at a sampling rate that is nominally twice or greater than twice the symbol rate of the electrical data stream that the ADC receives. A digital filter receives the digital data stream from the ADC, and digitally filters the digital data streams to output a filtered digital electrical data stream at an effective sampling rate that is less than the sampling rate and less than twice the symbol rate, and greater than or equal to the symbol rate.

Abstract translation: 本公开描述了在相干接收机中采样电数据流的技术。 例如，模数转换器（ADC）以标称值为ADC接收的电数据流的符号速率的两倍或更大的采样速率对接收的电数据流进行采样。 数字滤波器从ADC接收数字数据流，并对数字数据流进行数字滤波，以低于采样速率且小于符号速率的两倍的有效采样速率输出滤波后的数字电子数据流，并且大于 或等于符号率。