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公开(公告)号：US20240264474A1
公开(公告)日：2024-08-08
申请号：US18563022
申请日：2021-08-06
发明人： Xuerui LIANG , Qianchen YU , Li FU , Bo ZHANG , Yi HU , Yong LUO , Qianggao HU
IPC分类号： G02F1/035
CPC分类号： G02F1/035
摘要： Disclosed are an optical waveguide device and manufacturing method thereof. The optical waveguide device includes a substrate and an optical modulation module electrically connected with the substrate, the optical modulation module including: an underlay having a first surface relatively close to the substrate and a second surface relatively far away from the substrate, which are provided opposite to each other; an optical waveguide lamination, located between the first surface of the underlay and the substrate, including a lower cladding layer, an optical waveguide layer and an upper cladding layer located between the first surface of the underlay and the optical waveguide layer, which are three stacked in a first direction perpendicular to a plane where the underlay is located; and a conductive structure, located between the optical waveguide layer and the substrate and electrically connected with the optical waveguide layer to conduct an electric signal to the optical waveguide layer.
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2.发明公开公开(公告)号：US20230275657A1
公开(公告)日：2023-08-31
申请号：US18020238
申请日：2021-06-17
发明人： Cuihong ZHANG , Jiantao ZHANG , Zhijun YE , Tao XIONG
IPC分类号： H04B10/071 , H04B10/2575
CPC分类号： H04B10/071 , H04B10/2575
摘要： Disclosed are an optical fiber time domain reflectometer (OTDR), a test system, test method, and a storage medium. The OTDR comprises: an input end for receiving an input service optical signal; a first filter connected with the input end and for filtering an interference signal with a wavelength equal to a test wavelength of the OTDR in the service optical signal; a wavelength division multiplexing WDM device having a reflection end, a transmission end and an output end; and an OTDR basic unit connected with the transmission end and used for emitting an OTDR signal equal to a test wavelength and receiving a return signal of the OTDR signal, wherein the output end of the WDM device is for outputting a filtered service optical signal received from the reflection end, outputting the OTDR signal received from the transmission end, and receiving the return signal returned from the optical fiber.
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公开(公告)号：US20220299708A1
公开(公告)日：2022-09-22
申请号：US17639084
申请日：2021-03-26
发明人： Tuquan Chen , Chenggang Liu , Ruyu Shi
摘要： Provided is a multi-channel light-receiving module, which comprises an incident collimator, a light-splitting assembly, an optical path conversion assembly and a photoelectric chip array which are arranged in sequence, wherein the light-splitting assembly comprises an inner reflector and a plurality of optical filters, and the optical filters are respectively arranged on an output end of the inner reflector; the channel interval of photoelectric chips in the photoelectric chip array is less than the channel interval of an adjacent optical filter; the optical path conversion assembly comprises a plurality of emergent collimators and an optical fiber connected to each of the emergent collimators; a plurality of paths of optical signals output by the light-splitting assembly are respectively coupled into corresponding optical fibers after passing through the plurality of emergent collimators; and the plurality of paths of optical signals are output by output ends of the plurality of optical fibers and are then coupled to the photoelectric chip array. By means of the light-receiving module, an optical path component is converted into a small channel interval of photoelectric chips from a large channel interval of optical filters, the problem of it being difficult to match the channel interval of optical filters and the channel interval of photoelectric chips is solved, the cost of photoelectric chips is reduced, and the assembly difficulty of optical filters is also reduced.
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公开(公告)号：US11327241B2
公开(公告)日：2022-05-10
申请号：US16767927
申请日：2017-12-26
发明人： Xuguang Chen , Qiangpeng Hu , Jun Zhang , Zhiqiang Chen , Hong Zhu , Po Liang
IPC分类号： G02B6/38
摘要： An optical fiber adapter structure, comprises a metal flange, a tubular housing, an insulating ring, an optical fiber stub, and a shielding annulus. The optical fiber stub is embedded into the metal flange; the shielding annulus is fixed at a bottom of the metal flange by means of a conductive adhesive; the shielding annulus covers an end of the optical fiber stub and is provided with a reserved hole only for laser signals to pass through; the tubular housing is sleeved to the bottom of the metal flange; and the tubular housing is insulated from the metal flange by means of the insulating ring. The conductive adhesive adheres the shielding annulus made of conductive material to a tail end of the metal flange and maintains complete electrical contact therebetween, such that the electromagnetic wave radiation between the interior of optical device and the exterior of metal flange is reduced.
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公开(公告)号：US11032002B2
公开(公告)日：2021-06-08
申请号：US16756752
申请日：2017-12-25
发明人： Peng Zhang , Jiantao Zhang , Cuihong Zhang
IPC分类号： H04B10/071 , H04B10/50 , H04B10/69 , H04B10/079
摘要： The present disclosure relates to a signal processing system applied to remove OTDR noise, comprising: an analog-to-digital converter, a laser and driving unit, a sequence accumulator, a preprocessing counter, a pulse generator, a dual-port memory, a self-adaptive filter, an event decision device, and a preprocessing data decision device. The self-adaptive filter reads preprocessing data from a read-only port of the dual-port memory, and performs noise processing on the read preprocessing data by using a self-adaptive filtering method of wavelet transform. The event decision device performs an event decision on the filtered data output from the self-adaptive filter; The preprocessing data decision device decides whether a certain set of preprocessing data in m groups of preprocessing data is correct data or high-signal-to-noise data according to the difference of the m groups of preprocessing data after passing through the event decision device.
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6.发明授权公开(公告)号：US10969545B2
公开(公告)日：2021-04-06
申请号：US16759795
申请日：2017-12-25
发明人： Jiuhong Ling , Fan Wu , Xiangjian Kong , Changan Li , Jiayan Hu
摘要： An apparatus and method for temperature compensation, belonging to the technical field of optical communications, and particularly an apparatus and method for implementing bilinear temperature compensation of an arrayed waveguide grating is disclosed. The apparatus consists of two drivers. A first driver performs linear compensation in a range lower than normal temperature 25° C. to −40° C. (low-temperature area) or a range higher than ambient temperature 25° C. to 85° C. (high-temperature area). A second driver is used to realize nonlinear compensation of superimposed effect of AWG chip wavelength/temperature in another temperature area. Two parts of the chip after being divided have different relative displacement/effective compensation amounts in different temperature ranges, having over-compensation in the high-temperature area and under-compensation in the low-temperature area, so that a center wavelength of the AWG chip appears as two gentle curves with temperature change. The residual nonlinear temperature effect is effectively reduced.
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7.发明申请公开(公告)号：US20200220316A1
公开(公告)日：2020-07-09
申请号：US16624656
申请日：2017-12-25
发明人： Zhenyu Yu , Qinlian Bu , Chengpeng Fu , Zhijun Ye , Fei Liu , Fuxing Deng , Rui Lei , Xiao Cai
IPC分类号： H01S3/094 , H01S3/067 , H04B10/071
摘要： An optical amplifier assembly and a detection method capable of dynamically performing optical time-domain reflection detection. The detection method comprises obtaining signal light intensity detection signals from a first and second photodetectors and sending a control signal to an L-band Raman pump when it is determined that the signal light intensity in the second photodetector is lower than a first preset threshold, so that the L-band Raman pump enters into an optical time-domain reflection detection mode; sending a control signal to the L-band Raman pump when the signal light intensity in the second photodetector is greater than or equal the first preset threshold, so that the L-band Raman pump enters into an L-Band Raman optical fiber amplifier operation mode.
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公开(公告)号：US10684421B2
公开(公告)日：2020-06-16
申请号：US16345807
申请日：2016-12-19
发明人： Xiaobo Zhao , Xinhai Zhu , Zhechi Lu , Wenchuang Gao , Yi Jiang , Benqing Quan , Yuxiang Yang
IPC分类号： G02B6/38
摘要： Disclosed is a gravity-adapted optical-fiber-connector comprising a gravity-adapted block and at least one gravity connector each including a fiber-stub; tail handle; rear seat being clamped and fixed by gravity-adapted block; elastic device being sleeved on a portion of excircle surface of tail handle and limited by an end face of rear seat and that of tail handle; outer sleeve and optical cable; gravity of gravity-adapted block is applied to elastic device through the end face of rear seat, after the elastic device is compressed, a spring having identical magnitude and direction with the gravity is generated and acted on the end face of tail handle, such that a physical butt-joint-surface of fiber-stub is always applied a preload about the gravity. The gravity-adapted optical-fiber-connector has stable optical-fiber coupling efficiency and coupling performance.
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公开(公告)号：US10666377B2
公开(公告)日：2020-05-26
申请号：US16226591
申请日：2018-12-19
发明人： Jiekui Yu , Ying Zhang , Zhaoxia Liu , Jian Xu
摘要： The present disclosure relates to a technical field of optical communication, and more particularly to a device and method for matching optical fiber connections for ROADM service side, wherein the device comprises a reference control optical channel transmitter, a downlink WSS, a plurality of emitting ports, a reference control optical channel receiver, an uplink WSS and a plurality of receiving ports; the reference control optical channel transmitter emitting a reference control optical channel signal, and the downlink WSS emitting the reference control optical channel through the respective emitting ports in a polling manner; the reference control optical channel receiver receiving the reference control optical channel signal, and the uplink WSS selectively receiving the reference control optical channel over the plurality of receiving ports in the polling manner; wherein the reference control optical channel operating within an operating wavelength range of WSSs in the ROADM but outside a wavelength range of a service optical channel. By using WSS to control polling of the reference control optical channel among service side ports of ROADM, the present disclosure realizes an auto-routing matching of an optical fiber connection between different service side ports of ROADM and improves configuration efficiency, and at the same time, also realize to monitor performance of the optical fiber connection between service side ports of ROADMs in different directions and be a standby physical channel for chassis cascade.
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公开(公告)号：US20190361175A1
公开(公告)日：2019-11-28
申请号：US16345807
申请日：2016-12-19
发明人： Xiaobo Zhao , Xinhai Zhu , Zhechi Lu , Wenchuang Gao , Yi Jiang , Benqing Quan , Yuxiang Yang
IPC分类号： G02B6/38
摘要： Disclosed is a gravity-adapted optical-fiber-connector comprising a gravity-adapted block and at least one gravity connector each including a fiber-stub; tail handle; rear seat being clamped and fixed by gravity-adapted block; elastic device being sleeved on a portion of excircle surface of tail handle and limited by an end face of rear seat and that of tail handle; outer sleeve and optical cable; gravity of gravity-adapted block is applied to elastic device through the end face of rear seat, after the elastic device is compressed, a spring having identical magnitude and direction with the gravity is generated and acted on the end face of tail handle, such that a physical butt-joint-surface of fiber-stub is always applied a preload about the gravity. The gravity-adapted optical-fiber-connector has stable optical-fiber coupling efficiency and coupling performance.
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