公开(公告)号：US20160112138A1

公开(公告)日：2016-04-21

申请号：US14518262

申请日：2014-10-20

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Sorin Tibuleac

IPC: H04B10/50 ,  H04B10/079

CPC classification number: H04B10/50572 ,  H04B10/50575 ,  H04B10/50593 ,  H04B10/50595 ,  H04B10/588 ,  H04B10/615

Abstract: A transmitter with at least one optical modulator adapted to modulate the optical signal output by a laser source to generate a modulated optical signal, wherein the optical signal output by the laser source is tapped and supplied to a monitoring circuit comprising an optical front end configured to select signal components of the tapped modulated optical signal and to convert the selected signal components of the tapped modulated optical signal into analog signals, and comprising at least one analog-to-digital converter, ADC, adapted to perform equivalent-time sampling of the analog signals to provide digital signals processed by a processing unit to monitor signal quality of the modulated optical signal.

Abstract translation: 一种具有至少一个光调制器的发射器，其适于调制由激光源输出的光信号以产生经调制的光信号，其中由激光源输出的光信号被抽头并提供给监视电路，该监视电路包括被配置为 选择抽头调制的光信号的信号分量，并将抽头调制的光信号的所选信号分量转换成模拟信号，并且包括至少一个模/数转换器ADC，适于执行模拟的等效时采样 信号以提供由处理单元处理的数字信号，以监测调制光信号的信号质量。

公开(公告)号：US10404397B2

公开(公告)日：2019-09-03

申请号：US14757689

申请日：2015-12-23

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Fuerst Cornelius ,  Sorin Tibuleac ,  Christophe Meyer

IPC: H04B10/2513 ,  H04J14/02 ,  H04B10/54 ,  H04B10/61 ,  H04L5/00 ,  H04B10/69

Abstract: A wavelength division multiplexed telecommunication system with automatic compensation of chromatic dispersion in a predetermined wavelength band, said WDM telecommunication system comprising a probe signal detection unit at a receiver side adapted to detect amplitude modulated probe signals generated by a probe signal generation unit at a transmitter side with a predetermined relative phase difference and transmitted through an optical link to said receiver side; and a chromatic dispersion compensation unit adapted to compensate the chromatic dispersion in response to a relative phase difference of the amplitude modulated probe signals detected by said probe signal detection unit at the receiver side.

公开(公告)号：US10122460B2

公开(公告)日：2018-11-06

申请号：US15406027

申请日：2017-01-13

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Sorin Tibuleac ,  Cornelius Fuerst ,  Christophe Meyer

IPC: H04J14/02 ,  H04B10/2513

Abstract: A chromatic dispersion compensation apparatus for automatic compensation of chromatic dispersion of signals transmitted via an optical link at predetermined wavelengths of WDM channels within a predetermined band. A tapping unit taps optical signals received by the chromatic dispersion compensation apparatus via the optical link at predetermined wavelengths and supply them to an optical coherent receiver adapted to tune its local oscillator to WDM channels to generate corresponding analog electrical signals of the WDM channels which are sampled by an analog digital converter to provide digital signal samples of WDM channels processed by a digital signal processor of the chromatic dispersion compensation apparatus to calculate an estimate residual chromatic dispersion value of the received optical signals. A tuneable dispersion compensation module is set to perform optical compensation of a residual chromatic dispersion of the received optical signals depending on calculated estimate residual chromatic dispersion value of the received optical signals.

公开(公告)号：US10659854B1

公开(公告)日：2020-05-19

申请号：US16372344

申请日：2019-04-01

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Niall Robinson ,  Ross Saunders

IPC: H04Q11/00

Abstract: A pluggable aggregation module adapted to be plugged into a network device of an optical network, said pluggable aggregation module comprising optical frontends configured to connect said pluggable aggregation module with a corresponding number of modules to exchange optical signals via optical fibres in legacy signal formats; and an electrical conversion circuit configured to convert the legacy signal formats to an internal signal format used by said network device.

公开(公告)号：US09337921B2

公开(公告)日：2016-05-10

申请号：US14079887

申请日：2013-11-14

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Mark Filer ,  Ted Rabenko ,  Sorin Tibuleac

IPC: H04B10/08 ,  H04B10/077 ,  H04B10/27 ,  H04B10/25 ,  H04J14/02 ,  G01M11/08 ,  H04B10/073

CPC classification number: H04B10/0775 ,  G01M11/088 ,  H04B10/073 ,  H04B10/077 ,  H04B10/0771 ,  H04B10/25 ,  H04B10/27 ,  H04J14/02

Abstract: The length of the optical fiber section under tension expands by a certain amount that is proportional to the level of tension applied to it. Monitoring the variations in the phase of the arriving signal allows to discover a fiber that is subject to a certain level of mechanical tension. With the method and apparatus according to the present invention it is possible to protect optical communication channels against failures in an optical transmission fiber that are caused by any kind of mechanical disturbances.

Abstract translation: 张力下的光纤部分的长度膨胀一定量，与施加到其上的张力水平成正比。 监测到达信号的相位变化允许发现受到一定程度的机械张力的光纤。 利用根据本发明的方法和装置，可以保护光通信信道免受由任何种类的机械干扰引起的光传输光纤中的故障。

公开(公告)号：US20150131988A1

公开(公告)日：2015-05-14

申请号：US14079887

申请日：2013-11-14

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Mark Filer ,  Ted Rabenko ,  Sorin Tibuleac

IPC: H04B10/077 ,  H04B10/25 ,  H04J14/02 ,  H04B10/27

CPC classification number: H04B10/0775 ,  G01M11/088 ,  H04B10/073 ,  H04B10/077 ,  H04B10/0771 ,  H04B10/25 ,  H04B10/27 ,  H04J14/02

Abstract: The length of the optical fiber section under tension expands by a certain amount that is proportional to the level of tension applied to it. Monitoring the variations in the phase of the arriving signal allows to discover a fiber that is subject to a certain level of mechanical tension. With the method and apparatus according to the present invention it is possible to protect optical communication channels against failures in an optical transmission fiber that are caused by any kind of mechanical disturbances.

Abstract translation: 张力下的光纤部分的长度膨胀一定量，与施加到其上的张力水平成正比。 监测到达信号的相位变化允许发现受到一定程度的机械张力的光纤。 利用根据本发明的方法和装置，可以保护光通信信道免受由任何种类的机械干扰引起的光传输光纤中的故障。

公开(公告)号：US09729244B2

公开(公告)日：2017-08-08

申请号：US14518262

申请日：2014-10-20

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Sorin Tibuleac

IPC: H04B10/588 ,  H04B10/50 ,  H04B10/61

CPC classification number: H04B10/50572 ,  H04B10/50575 ,  H04B10/50593 ,  H04B10/50595 ,  H04B10/588 ,  H04B10/615

Abstract: A transmitter with at least one optical modulator adapted to modulate the optical signal output by a laser source to generate a modulated optical signal, wherein the optical signal output by the laser source is tapped and supplied to a monitoring circuit comprising an optical front end configured to select signal components of the tapped modulated optical signal and to convert the selected signal components of the tapped modulated optical signal into analog signals, and comprising at least one analog-to-digital converter, ADC, adapted to perform equivalent-time sampling of the analog signals to provide digital signals processed by a processing unit to monitor signal quality of the modulated optical signal.

公开(公告)号：US20170187482A1

公开(公告)日：2017-06-29

申请号：US14757689

申请日：2015-12-23

Applicant: ADVA Optical Networking SE

Inventor： Mohammad Alfiad ,  Fuerst Cornelius ,  Sorin Tibuleac ,  Christophe Meyer

IPC: H04J14/02 ,  H04B10/61 ,  H04L5/00 ,  H04B10/54

CPC classification number: H04J14/02 ,  H04B10/25133 ,  H04B10/541 ,  H04B10/6161 ,  H04B10/6971 ,  H04L5/0048

Abstract: A wavelength division multiplexed telecommunication system with automatic compensation of chromatic dispersion in a predetermined wavelength band, said WDM telecommunication system comprising a probe signal detection unit at a receiver side adapted to detect amplitude modulated probe signals generated by a probe signal generation unit at a transmitter side with a predetermined relative phase difference and transmitted through an optical link to said receiver side; and a chromatic dispersion compensation unit adapted to compensate the chromatic dispersion in response to a relative phase difference of the amplitude modulated probe signals detected by said probe signal detection unit at the receiver side.