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公开(公告)号：US20180138980A1
公开(公告)日：2018-05-17
申请号：US15352040
申请日：2016-11-15
申请人： ZHIPING JIANG , CHUANDONG LI , ZHUHONG ZHANG , XUEFENG TANG
发明人： ZHIPING JIANG , CHUANDONG LI , ZHUHONG ZHANG , XUEFENG TANG
IPC分类号： H04B10/40 , H04Q11/00 , H04B3/32 , H04B10/556
CPC分类号： H04B10/40 , H04B3/32 , H04B10/5563 , H04B10/572 , H04B10/61 , H04B2210/254 , H04J14/0282 , H04Q11/0067 , H04Q2011/0047
摘要： An optical transceiver is provided with an optical front end for receiving signal light comprising an optical sub-channel, and for providing an electrical signal based on the signal light; a light source optically coupled to the optical front end for providing local oscillator light thereto for mixing with the signal light; an electro-optical modulator coupled to the light source for receiving output light therefrom and for modulating the output light with digital information to obtain modulated light; and a signal processor operably coupled to the optical front end. The signal processor is configured for processing the electrical signal to obtain a frequency offset of the sub-channel; and adjusting an optical frequency of the modulated light based on the frequency offset. When applied to a multiple-access environment, this may allow access nodes to generate optical sub-channels in the uplink direction using the downlink optical signal as an optical frequency reference.
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公开(公告)号：US20160380716A1
公开(公告)日：2016-12-29
申请号：US15258661
申请日：2016-09-07
申请人： ZHIPING JIANG , ZHUHONG ZHANG , XUEFENG TANG
发明人： ZHIPING JIANG , ZHUHONG ZHANG , XUEFENG TANG
IPC分类号： H04J14/02 , H04J14/06 , H04B10/516 , H04B10/25
CPC分类号： H04J14/0276 , H04B10/077 , H04B10/0775 , H04B10/2504 , H04B10/516 , H04B2210/075 , H04J14/06
摘要： The present applies to digital wavelength converters that convert, independently of the format in which optical data may be encoded, an input waveform at a first wavelength to an output waveform at a second wavelength. When operating in an environment where an input waveform has a pilot tone associated thereto, the method and system of the present disclosure allows for the removal of the pilot tone from the input waveform, and also allows for the addition of another pilot to the output waveform.
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公开(公告)号：US20170255078A1
公开(公告)日：2017-09-07
申请号：US15060037
申请日：2016-03-03
申请人： ZHIPING JIANG
发明人： ZHIPING JIANG
CPC分类号： G02F1/313 , G02B6/29385 , G02B6/351 , G02B6/3548
摘要： Apparatuses and methods for wavelength selective switching and optical performance monitoring are provided. Spatially separated wavelength channels of an optical signal are directed onto an optical deflector array. The optical deflector array is configured so that each wavelength channel is incident on a respective region of the optical deflector array. The optical deflector array is controlled so that, for one or more of the wavelength channels: i) a first portion of the region of the optical deflector array upon which the wavelength channel is incident is configured to steer a first portion of the wavelength channel toward a switching output port; and ii) a second portion of the region is configured to steer a second portion of the wavelength channel toward a monitoring output port.
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公开(公告)号：US20190319734A1
公开(公告)日：2019-10-17
申请号：US15950736
申请日：2018-04-11
申请人： ZHIPING JIANG , YUREN YOU
发明人： ZHIPING JIANG , YUREN YOU
摘要： In wavelength division multiplexing (WDM) systems, one optical multiplexing section (OMS) can support several channels. During a network reconfiguration, the number or channel index of the channels in the OMS may change, which may result in a change in gain for other channels in the OMS due to the channel loading dependant gain properties of many optical amplifiers. Equalization is therefore required in order to reduce power excursion for the channels in the OMS. Using a model for the channel loading dependent gain of optical amplifiers, equalization may be performed more quickly than using measurement-based equalization methods. The model predicts the change in gain for the channels in an OMS following network reconfiguration, and allows for an equalizer to quickly or pre-emptively adjust for the changes. This model may include an artificial neural network, which is trained using some of the possible channel loading conditions for the OMS.
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公开(公告)号：US20180146270A1
公开(公告)日：2018-05-24
申请号：US15358734
申请日：2016-11-22
申请人： ZHIPING JIANG
发明人： ZHIPING JIANG
CPC分类号： H04L7/0075 , H04J14/0284 , H04Q11/0062 , H04Q11/0066 , H04Q2011/0086
摘要： Aspects of the present application provide an optical interconnecting network architecture. The architecture involves a central node coupled to multiple access nodes (ANs), in which the central node includes a pair of optical couplers used to combine optical signals received from the ANs and broadcast the combined optical signals to all destination ANs. A coherent detection receiver in each of the ANs receives the combined optical signals and selectively detects a wavelength carrying the optical signal assigned to that AN by tuning a local oscillator (LO) wavelength of the coherent detection receiver.
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6.发明申请公开(公告)号：US20170010419A1
公开(公告)日：2017-01-12
申请号：US15099985
申请日：2016-04-15
申请人： ZHIPING JIANG
发明人： ZHIPING JIANG
CPC分类号： G02B6/29395 , G02B6/29338 , H01S5/062 , H01S5/125 , H01S5/5027 , H04B10/50 , H04B10/506 , H04Q11/0005 , H04Q2011/0016
摘要： Apparatuses and methods for tuning and switching between optical components are provided. The apparatuses and methods may be used in the context of optical communication. An example apparatus may include a first optical path having a first tunable component and a second optical path having a second tunable component. The apparatus may also include a first switch component for selectively connecting the first optical path to an output, and a second switch component for selectively connecting the second optical path to the output. The first and second switch components may be semiconductor optical amplifiers (SOAs). The apparatus may have a controller that controls the first switch component and the second switch component to select which optical path is connected to the output and controls tuning of the tunable component in the optical path that is not connected to the output.
摘要翻译： 提供了用于在光学部件之间进行调谐和切换的装置和方法。 这些装置和方法可以在光通信的上下文中使用。 示例性设备可以包括具有第一可调组件的第一光路和具有第二可调组件的第二光路。 该装置还可以包括用于将第一光路选择性地连接到输出端的第一开关部件和用于选择性地将第二光路连接到输出端的第二开关部件。 第一和第二开关部件可以是半导体光放大器（SOA）。 该装置可以具有控制第一开关部件和第二开关部件的控制器，以选择哪个光路连接到输出端，并控制未连接到输出端的光路中的可调组件的调谐。
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公开(公告)号：US20190296851A1
公开(公告)日：2019-09-26
申请号：US15926227
申请日：2018-03-20
申请人： ZHIPING JIANG
发明人： ZHIPING JIANG
IPC分类号： H04J14/02 , H04B10/079
摘要： The present disclosure includes methods and systems in which idle tones are added at an ingress and terminated at an egress of a given fiberoptic communication link between ROADM nodes. An equalization process can be performed across the spectrum of available wavelength channels and then a determination can be made of a number of channels that can be added or dropped at a given time that meet a maximum threshold for change in power of the channels in the available wavelength. As channels without information-carrying signals are filled with idle tones, the stability of the optical system can be improved as there is less variability in power change when all of the channels have a substantially similar nominal power and a signal on one or more of those channels are added or removed.
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公开(公告)号：US20170315317A1
公开(公告)日：2017-11-02
申请号：US15440759
申请日：2017-02-23
申请人： ZHIPING JIANG , SUET YUEN
发明人： ZHIPING JIANG , SUET YUEN
IPC分类号： G02B6/42 , G02B6/38 , G02B6/28 , G02B6/34 , H04B10/075
摘要： In various aspects, an optical connector with a built-in photodetector for detecting light in the optical connector; an adapter for detachably receiving an optical connector, comprising an electrode configured to electrically contact an electrode of the optical connector; a connection apparatus comprising an arrangement of adapters for detachably receiving a plurality of optical connectors, each adapter comprising an electrode configured to electrically contact an electrode of the respective optical connector; a system with an interface configured to make an optical connection with an optical connector and a processing unit configured to receive from the connector an indication and to generate a feedback signal indicative of said indication; and/or an optical connector responsive to light to generate an electrical signal is provided.
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公开(公告)号：US20170244509A1
公开(公告)日：2017-08-24
申请号：US15336061
申请日：2016-10-27
申请人： ZHIPING JIANG
发明人： ZHIPING JIANG
IPC分类号： H04J14/02 , H04B10/548 , H04L5/00 , H04B10/079
CPC分类号： H04J14/021 , H04B10/0773 , H04B10/0775 , H04B10/07955 , H04B10/07957 , H04B10/548 , H04B2210/075 , H04J14/0213 , H04J14/0221 , H04J14/0256 , H04L5/0008 , H04L5/0048 , H04L27/0004 , H04L27/0014 , H04L27/02
摘要： Systems and methods for performing wavelength conflict detection are provided. These are to detect situations in optical networks where two instances of the same wavelength channel have been added. Wavelength conflict detection is performed for each of a plurality of possible wavelength channels that could be present in an optical signal, each wavelength channel that is present modulated by a pilot tone signal with a respective pilot tone frequency, the pilot tone signal carrying M-ary pilot tone data, M=2n, n≧1, with a respective one of M different sequences being used to represent each of M possible data values over a data value period. Conflict detection for each wavelength channel involves performing correlation peak detection using each of the M different sequences to determine correlation peaks for each of the M different sequences, and, based on the determined correlation peaks, determining whether multiple instances of the wavelength channel are present in the optical signal.
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公开(公告)号：US20190149897A1
公开(公告)日：2019-05-16
申请号：US16173377
申请日：2018-10-29
申请人： ZHIPING JIANG
发明人： ZHIPING JIANG
摘要： Methods and apparatus are provided that configure a wider passband for one or more channels of a wavelength selective switch (WSS). When a wider passband route WSS and a normal width passband select switch are used in combination, crosstalk that may be introduced by the wider passband route WSS can be mitigated. The wider passband WSS can provide a passband that allows a maximum bandwidth of signal to pass on a given channel and avoid signal being attenuated at the channel edges, especially when channels have a reduced channel spacing, such as with 50 GHz spacing.
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