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公开(公告)号：US10666011B2
公开(公告)日：2020-05-26
申请号：US15620048
申请日：2017-06-12
申请人： Molex, LLC
发明人： Chiachi Wang , Lifu Gong , Lijie Qiao , Weihua Guan
IPC分类号： H01S3/10 , H04B10/294 , H01S3/067 , G02B6/35
摘要： Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for optical communications. In one aspect, an optical amplifier includes an input port, a wavelength division multiplexing fiber coupled to a pump source and to a bar-cross switch, a first gain stage optically coupled between a first port of the bar-cross switch and to an output port, the first gain stage including a first gain flattening filter, and a secondary gain stage optically coupled between a second port and a third port of the bar-cross switch, the secondary gain stage including a second gain flattening filter. When in a bar-state of the bar-cross switch, the secondary gain stage is bypassed. And when in a cross-state of the bar-cross switch, the secondary gain stage and the first gain stage are applied to an input light beam.
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公开(公告)号：US10419125B1
公开(公告)日：2019-09-17
申请号：US16005257
申请日：2018-06-11
申请人： Molex, LLC
发明人： Gongjian Hu , Lifu Gong , Yi Liao , Tian Zhu
IPC分类号： H04B10/564 , H04B10/2507
摘要： A dynamic gain equalizer (DGE) for an optical communication device and related method which are capable of reducing power variations among wavelength division multiplexing (WDM) signals. The DGE and method use an optical attenuation device configured such that the ratio of pixel gap distance to the channel beam diameter at the point of incident to the optical attenuation device is less than or equal to 0.06. The DGE can produce output signal sets that have ripple increases of less than 0.1 db over the input signal sets.
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公开(公告)号：US10374708B1
公开(公告)日：2019-08-06
申请号：US15928199
申请日：2018-03-22
申请人： Molex, LLC
发明人： Yi Liao , Gongjian Hu , Tian Zhu , Guijun Ji , Lifu Gong
IPC分类号： H04B10/00 , H04B10/2507 , H01S3/23 , H04J14/02 , H04B10/075
摘要： An optical communication device and related method are provided for reducing power variations among wavelength division multiplexing (WDM) signals. The device includes a dynamic gain equalizer (DGE) coupled to an optical communication path carrying WDM optical signals. The DGE is controlled in response to signals generated by an optical channel monitor (OCM). The OCM monitors signals coming into the DGE and monitors the signals leaving the DGE to thus monitor the WDM spectrum for optical signal power variations and adjust the DGE to reduce the signal power variations.
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公开(公告)号：US11290184B2
公开(公告)日：2022-03-29
申请号：US16289700
申请日：2019-03-01
申请人： Molex, LLC
发明人： Bichang Huang , Chao Shi , Lifu Gong
IPC分类号： H04B10/2513 , G02B6/293 , H04B10/2525 , H04J14/02
摘要： An optical fiber transmission system and method for using the system are provided. The system may include a span of transmission fiber for transmitting light signals through the optical fiber transmission system. The system may include a dispersion compensating module coupled to the span of transmission fiber. The system may include a switchable module including a set of selectable light signal paths, the set of selectable light signal paths including at least one path through a dispersion compensating element. The system may include a processor coupled to the switchable module for selectively monitoring the set of selectable light signal paths, where the processor is further configured to derive a metric based on the set of selectable light signal paths for controlling the dispersion compensating module.
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5.发明授权公开(公告)号：US10393968B1
公开(公告)日：2019-08-27
申请号：US16031716
申请日：2018-07-10
申请人： Molex, LLC
发明人： Gongjian Hu , Lifu Gong , Yi Liao , Tian Zhu
摘要： A wavelength selective switch includes a plurality of optical ports, a polarization conditioning system, a dispersion system, and a switching system. The switching system includes at least one transmissive stage and a reflective polarization modulator. Each transmissive stage has a transmissional polarization modulator and a symmetrical beam polarization separator. The transmissional polarization modulator includes transmissive first cells each being configured to change a polarization orientation of an optical beam passing through the cell. The symmetrical beam polarization separator is configured to redirect the optical beam passing therethrough based upon its polarization. The reflective polarization modulator includes a birefringence section and a reflective section. The birefringence section includes controllable second cells each being configured to convert linear polarization of an optical beam passing therethrough to circular polarization and to independently and selectively convert circular polarization of the optical beam passing through the second cell to linear polarization.
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公开(公告)号：US11863295B2
公开(公告)日：2024-01-02
申请号：US17577049
申请日：2022-01-17
申请人： Molex, LLC
发明人： Lifu Gong , Chao Xiang Shi , Bichang Huang , Frank Liu
IPC分类号： H04J14/02 , H04B10/077 , H04B10/50 , H04B10/60 , H04B10/40
CPC分类号： H04J14/0268 , H04B10/0771 , H04B10/0779 , H04J14/023 , H04B10/40 , H04B10/50 , H04B10/60
摘要： Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.
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公开(公告)号：US11309678B2
公开(公告)日：2022-04-19
申请号：US16596797
申请日：2019-10-09
申请人： Molex, LLC
发明人： Bichang Huang , Lifu Gong , Jun Yang
摘要： An amplified spontaneous emission (ASE) light source and a method for using the ASE light source are provided. The ASE light source may include a seed stage light source for providing a light beam to be amplified. The apparatus may include a tunable element coupled to the seed stage light source configured for filtering a portion of the light beam from the seed stage light source. The apparatus may include a loopback circuit coupled to the tunable element, the loopback circuit comprising a booster stage element for amplifying light from the tunable element.
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8.发明公开公开(公告)号：US20240106558A1
公开(公告)日：2024-03-28
申请号：US18368577
申请日：2023-09-15
申请人： Molex, LLC
发明人： Minchun Li , Gongjian Hu , Lifu Gong , Feng Qing Zhou
CPC分类号： H04J14/0212 , H04Q11/0005 , H04Q2011/0016
摘要： A reconfigurable optical add and drop multiplexer (ROADM) system is provided. The ROADM system may include a switching system which includes at least one first WSS optically coupled to a tapping coupler and configured to receive an input optical signal from a first circulator, transmit a drop optical signal to a demultiplexer to drop one or more first wavelength channels, and output a through optical signal. The switching system may also include at least one second WSS optically coupled to the at least one first WSS and a multiplexer and configured to receive an add optical signal to add one or more second wavelength channels, receive the through optical signal, and output an output optical signal to a second circulator, and at least one OCM configured to monitor the input optical signal and the output optical signal.
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公开(公告)号：US20240014919A1
公开(公告)日：2024-01-11
申请号：US18370903
申请日：2023-09-21
申请人： Molex, LLC
发明人： Lifu Gong , Chao Xiang Shi , Bichang Huang , Frank Liu
IPC分类号： H04J14/02 , H04B10/077
CPC分类号： H04J14/0268 , H04J14/023 , H04B10/0771 , H04B10/0779 , H04B10/50
摘要： Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.
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公开(公告)号：US11506884B2
公开(公告)日：2022-11-22
申请号：US16274311
申请日：2019-02-13
申请人： Molex, LLC
发明人： Gongjian Hu , Kelvin Chau , Lifu Gong
摘要： An optical circuit switch device and method for using the device are provided. The device may include a fiber array including a set of optical fibers configured for transmitting optical signals. The device may include a collimator array coupled to the fiber array configured for aligning the optical signals received from the fiber array. The device may include a first mirror array for receiving the optical signals from the collimator array. The device may include a second mirror array for receiving the optical signals from the first mirror array. The device may include a lens located at the fiber array, the lens having a focal point at the second mirror array.
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