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1.发明申请公开(公告)号：US20170170898A1
公开(公告)日：2017-06-15
申请号：US15300097
申请日：2014-03-31
Applicant: Accelink Technologies Co., Ltd.
Inventor： Yanfeng Fu , Qianggao Hu , Di Zhang , Shenglei Hu , Yong Luo
IPC: H04B10/079 , H04J14/02
CPC classification number: H04B10/07957 , H04B10/0731 , H04B10/079 , H04B10/0799 , H04J14/00 , H04J14/02 , H04J14/0282
Abstract: Disclosed is a method for monitoring the wavelength of a tunable laser device of user by local OLT. The method is applied to a wavelength division multiplexing passive optical network framework. The framework comprises an ONU, a first athermal array waveguide grating, a transmission optical fiber, a second athermal array waveguide grating and the OLT, which are sequentially connected. ONU comprises tunable wavelength optical transmitters. The method comprises: starting handshaking is carried out between the OLT and the ONU; and the OLT carries out wavelength drifting monitoring during operation of the ONU. Wavelength adjustment can be carried out on the multi-channel tunable laser device in an external auxiliary monitoring environment, thus channel wavelengths of the multi-channel tunable laser device can be accurately controlled, and the requirement for calibration accuracy of channels of the tunable laser device at the ONU is greatly reduced.
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2.发明申请公开(公告)号：US20150288142A1
公开(公告)日：2015-10-08
申请号：US14432051
申请日：2012-10-29
Applicant: ACCELINK TECHNOLOGIES CO., LTD.
Inventor： Yanfeng Fu , Di Zhang , Qianggao Hu , Xuesheng Tang , Shenglei Hu , Yi Tang , Kun Qian
IPC: H01S5/14 , G02F1/1335 , G02F1/1343 , G02F1/1337 , H01S3/106 , H01S5/022
CPC classification number: H01S5/141 , G02B5/28 , G02B26/001 , G02F1/133553 , G02F1/1337 , G02F1/13439 , H01S3/1065 , H01S5/02284 , H01S5/0687 , H01S5/14 , H01S5/4062
Abstract: An external-cavity tunable laser with a flexible wavelength grid tuning function comprises a resonant cavity, collimating lenses, an optical isolator, and an output optical fiber. The resonant cavity comprises a semiconductor gain chip, a beam expander collimating lens, a combined liquid crystal tunable filter assembly, and a reflecting mirror. A current injected to the semiconductor gain chip is converted to broadband spontaneously radiating photons through electrical-to-optical conversion, and the photons are spread along a waveguide toward two sides. A part of photons with special frequencies go back and forth multiple times in the resonant cavity to form a laser after a threshold condition is met. The laser is collimated by the collimating lens, passes through the optical isolator, is coupled by the collimating lens, and enters the output optical fiber.
Abstract translation: 具有柔性波长网格调谐功能的外腔可调激光器包括谐振腔，准直透镜，光隔离器和输出光纤。 谐振腔包括半导体增益芯片，扩束器准直透镜，组合液晶可调谐滤光器组件和反射镜。 注入半导体增益芯片的电流通过电 - 光转换转换为宽带自发辐射光子，并且光子沿着波导朝向两侧扩展。 具有特殊频率的光子的一部分在谐振腔中多次来回，在满足阈值条件之后形成激光。 激光由准直透镜准直，通过光隔离器，由准直透镜耦合，并进入输出光纤。
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公开(公告)号：US10050406B2
公开(公告)日：2018-08-14
申请号：US15460956
申请日：2017-03-16
Applicant: Accelink Technologies Co., Ltd.
Inventor： Xuesheng Tang , Yanfeng Fu , Kun Qian , Yong Luo , Yizong Chen , Di Zhang , Qianggao Hu , Yi Tang , Chao Luo
IPC: H01S3/10 , H01S5/14 , H01S5/024 , H01S3/04 , H01S3/13 , H01S5/028 , H01S5/0683 , H01S3/106 , H01S5/06 , H01S5/50 , H01S5/065
Abstract: The present invention relates to an external cavity tunable laser and a cavity mode locking method thereof. In an embodiment, an external cavity tunable laser comprises a semiconductor amplifier having a partial reflective film provided on one end and an anti-reflective film provided on the other end, a cavity mirror provided at the anti-reflective end to define an external cavity therebetween, a large-range phasing assembly and a quick phasing assembly provided to adjust the optical length of the external cavity independently, an optical power detector provided to detect the optical power of the light output from the semiconductor amplifier, and a control unit in communication with the optical power detector, the large-range phasing assembly, and the quick phasing assembly.
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公开(公告)号：US20180216995A1
公开(公告)日：2018-08-02
申请号：US15748005
申请日：2015-12-15
Applicant: Accelink Technologies Co., Ltd.
Inventor： Kun Qian , Yanfeng Fu , Xuesheng Tang , Yi Tang , Yizong Chen , Di Zhang , Shenglei Hu , Weidong Ma
CPC classification number: G01J1/4257 , G01J3/42 , G01J2001/4247 , G01J2003/423 , G01M11/02
Abstract: A performance testing device for a multi-channel tunable laser, comprising a collimating and coupling lens, a first beam splitter, a power testing unit, a side-mode suppression ratio testing unit, a wavelength testing unit and a control and drive unit, the power testing unit being positioned in a reflection path of the first beam splitter, the wavelength testing unit being positioned in a transmission path of the first beam splitter, the side-mode suppression ratio testing unit being positioned in a reflection path of the second beam splitter, the control and drive unit being in a control connection with the power testing unit, the side-mode suppression ratio testing unit and the wavelength testing unit. The performance testing device has a simple structure, a low cost, and is convenient to use
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公开(公告)号：US10145731B2
公开(公告)日：2018-12-04
申请号：US15748005
申请日：2015-12-15
Applicant: Accelink Technologies Co., Ltd.
Inventor： Kun Qian , Yanfeng Fu , Xuesheng Tang , Yi Tang , Yizong Chen , Di Zhang , Shenglei Hu , Weidong Ma
Abstract: A performance testing device for a multi-channel tunable laser, comprising a collimating and coupling lens, a first beam splitter, a power testing unit, a side-mode suppression ratio testing unit, a wavelength testing unit and a control and drive unit, the power testing unit being positioned in a reflection path of the first beam splitter, the wavelength testing unit being positioned in a transmission path of the first beam splitter, the side-mode suppression ratio testing unit being positioned in a reflection path of the second beam splitter, the control and drive unit being in a control connection with the power testing unit, the side-mode suppression ratio testing unit and the wavelength testing unit. The performance testing device has a simple structure, a low cost, and is convenient to use.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180172907A1
公开(公告)日：2018-06-21
申请号：US15541659
申请日：2014-12-29
Applicant: Accelink Technologies Co., Ltd.
Inventor： Yanfeng Fu , Kun Qian , Di Zhang , Xuesheng Tang , Shenglei Hu , Yi Tang , Di Li , Weidong Ma , Qianggao Hu
CPC classification number: G02B6/12019 , G02B6/12004 , G02B6/12014 , H01S3/106 , H01S3/137 , H01S5/0287 , H01S5/068 , H01S5/142
Abstract: An arrayed waveguide grating based hybrid integrated laser has an adjustable external cavity. The waveguide includes a semiconductor gain die and an optical waveguide chip. The optical waveguide chip includes an arrayed waveguide grating and an arrayed waveguide reflection-controllable component. A resonant cavity is formed by the output end reflection-controllable arrayed waveguide grating chip and the semiconductor gain die. An output wavelength of the laser can be adjusted by changing a driving condition of the reflection-controllable component. The output wavelength is determined by a center wavelength of each channel of the arrayed waveguide grating.
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公开(公告)号：US09912120B2
公开(公告)日：2018-03-06
申请号：US15106580
申请日：2013-12-25
Applicant: Accelink Technologies Co., Ltd.
Inventor： Yanfeng Fu , Yong Luo , Di Zhang , Xuesheng Tang , Kun Qian , Yi Tang , Shenglei Hu , Qianggao Hu
CPC classification number: H01S5/143 , H01S3/08086 , H01S3/102 , H01S3/105 , H01S5/068 , H01S5/0683 , H01S5/141
Abstract: A Raman pump laser control apparatus comprises a wavelength division multiplexer, a tap coupler, a photoelectric detector, an analog amplification processing circuit, an analog-to-digital converter, a fast Raman pump control unit, an digital-analog converter, and a Raman pump laser. The fast Raman pump control unit, after having known anticipated output light power of the Raman pump laser, based on a direct relationship between a current anticipated output light power of the Raman pump laser and input digital quantity that is needed by the digital-analog converter, uses a feedforward control mechanism so that actual output light power of the Raman pump laser fastly approximates the anticipated output light power thereof, and then synchronously combines with a feedback control mechanism so that the actual output light power of the Raman pump laser is precisely locked on the anticipated output light power, thereby achieving fast and precise control of the Raman pump laser.
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公开(公告)号：US20180191132A1
公开(公告)日：2018-07-05
申请号：US15740655
申请日：2015-12-15
Applicant: Accelink Technologies Co., Ltd.
Inventor： Shenglei Hu , Yanfeng Fu , Yi Tang , Di Zhang , Shiyu Li , Xuesheng Tang , Kun Qian , Weidong Ma , Qianggao Hu
CPC classification number: H01S5/06 , H01S3/1062 , H01S5/0064 , H01S5/02446 , H01S5/14 , H01S5/142 , H01S5/50
Abstract: A wavelength-tunable external cavity laser comprises a semiconductor optical amplifier chip and a laser external cavity, the laser external cavity comprising a grid filter, a phase adjustor and a silicon-based micro-ring chip, the grid filter and the silicon-based micro-ring chip constituting a wavelength-tunable optical filter which implements wavelength tuning by spectral tuning of the grid filter and/or the silicon-based micro-ring chip. A micro-ring filter in the silicon-based micro-ring chip of the tunable external-cavity laser is manufactured by adopting a mature silicon light technology, which can greatly reduce a manufacturing difficulty of the adjustable filter, and reduce the manufacturing cost of a device. An existing external-cavity adjustable technology platform may be used for smooth transition, so as to improve the degree of integration of this type of device and simplify a preparation process.
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9.发明授权公开(公告)号：US09991954B2
公开(公告)日：2018-06-05
申请号：US15300097
申请日：2014-03-31
Applicant: Accelink Technologies Co., Ltd.
Inventor： Yanfeng Fu , Qianggao Hu , Di Zhang , Shenglei Hu , Yong Luo
IPC: H04B10/08 , H04J4/00 , H04B10/00 , H04J14/02 , H04B10/079 , H04J14/00 , H04B10/073
CPC classification number: H04B10/07957 , H04B10/0731 , H04B10/079 , H04B10/0799 , H04J14/00 , H04J14/02 , H04J14/0282
Abstract: Disclosed is a method for monitoring the wavelength of a tunable laser device of user by local OLT. The method is applied to a wavelength division multiplexing passive optical network framework. The framework comprises an ONU, a first athermal array waveguide grating, a transmission optical fiber, a second athermal array waveguide grating and the OLT, which are sequentially connected. ONU comprises tunable wavelength optical transmitters. The method comprises: starting handshaking is carried out between the OLT and the ONU; and the OLT carries out wavelength drifting monitoring during operation of the ONU. Wavelength adjustment can be carried out on the multi-channel tunable laser device in an external auxiliary monitoring environment, thus channel wavelengths of the multi-channel tunable laser device can be accurately controlled, and the requirement for calibration accuracy of channels of the tunable laser device at the ONU is greatly reduced.
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公开(公告)号：US20170187163A1
公开(公告)日：2017-06-29
申请号：US15460956
申请日：2017-03-16
Applicant: Accelink Technologies Co., Ltd.
Inventor： Xuesheng Tang , Yanfeng Fu , Kun Qian , Yong Luo , Yizong Chen , Di Zhang , Qianggao Hu , Yi Tang , Chao Luo
CPC classification number: H01S3/1305 , H01S3/1067 , H01S3/1307 , H01S5/02438 , H01S5/028 , H01S5/0287 , H01S5/0612 , H01S5/065 , H01S5/0683 , H01S5/06837 , H01S5/0687 , H01S5/14 , H01S5/141 , H01S5/50
Abstract: The present invention relates to an external cavity tunable laser and a cavity mode locking method thereof. In an embodiment, an external cavity tunable laser comprises a semiconductor amplifier having a partial reflective film provided on one end and an anti-reflective film provided on the other end, a cavity mirror provided at the anti-reflective end to define an external cavity therebetween, a large-range phasing assembly and a quick phasing assembly provided to adjust the optical length of the external cavity independently, an optical power detector provided to detect the optical power of the light output from the semiconductor amplifier, and a control unit in communication with the optical power detector, the large-range phasing assembly, and the quick phasing assembly.
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