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公开(公告)号：US11451301B2
公开(公告)日：2022-09-20
申请号：US17245958
申请日：2021-04-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Benbo Xu , Jialin Zhao , Zhen Dong
IPC: G02F1/00 , H04B10/50 , H04B10/516
Abstract: This application provides an example light source switching apparatus. The apparatus includes first and second multi-mode interference (MMI) couplers, and a phase modulator. The first MMI coupler includes four ports, where first and second ports are located on one side, and third and fourth ports are located on the other side. The second MMI coupler includes three ports, where fifth and sixth ports are located on one side, and a seventh port is located on the other side. The first and the second ports connect to the fifth and the sixth ports, respectively, to form two connections. The phase modulator is disposed on one of the two connections, and the seventh port connects to an optical modulator. Both the third and the fourth ports connect to a light source emitting continuous light, and the phase modulator selects one of the two light sources for output from the seventh port.
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公开(公告)号：US20220026780A1
公开(公告)日：2022-01-27
申请号：US17498335
申请日：2021-10-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chengcheng Gui , Jialin Zhao , Xiaolu Song
Abstract: An optical frequency comb light source and an optical frequency comb generation method, where the light source includes a laser diode, a coupler, a Kerr nonlinear device, a beam splitter, and a phase shifter. The laser diode is connected to one input port of the coupler, and the other input port of the coupler is connected to an output port of the phase shifter. An output port of the coupler is connected to an input port of the Kerr nonlinear device. An output port of the Kerr nonlinear device is connected to an input port of the beam splitter. One output port of the beam splitter is connected to an input port of the phase shifter. The other output port of the beam splitter is configured to output a plurality of optical frequency combs. A multi-wavelength light source with relatively high power may be provided.
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公开(公告)号：US11522341B2
公开(公告)日：2022-12-06
申请号：US16877707
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jialin Zhao , Wei Chen , Li Zeng
IPC: H01S5/10 , H01S5/02 , H01S5/026 , H01S5/068 , H01S5/14 , H01S5/50 , H04B10/50 , H01S5/024 , H01S3/06
Abstract: A tunable laser includes a reflective semiconductor optical amplifier (SOA), a grating codirectional coupler, and a reflective microring resonator. The grating codirectional coupler and the reflective microring resonator are both formed on a silicon base. An anti-reflection film is disposed on a first end surface of the reflective SOA, and the first end surface is an end surface, coupled to a first waveguide of the grating codirectional coupler, of the reflective SOA. A second waveguide of the grating codirectional coupler is coupled to the first waveguide, a first grating is disposed on the first waveguide, a second grating disposed opposite to the first grating is disposed on the second waveguide, and the first grating and the second grating constitute a narrow-band pass filter. The second waveguide is connected to the reflective microring resonator.
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Patent Agency Ranking
公开(公告)号：US20200280172A1
公开(公告)日：2020-09-03
申请号：US16877707
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jialin Zhao , Wei Chen , Li Zeng
Abstract: A tunable laser includes a reflective semiconductor optical amplifier (SOA), a grating codirectional coupler, and a reflective microring resonator. The grating codirectional coupler and the reflective microring resonator are both formed on a silicon base. An anti-reflection film is disposed on a first end surface of the reflective SOA, and the first end surface is an end surface, coupled to a first waveguide of the grating codirectional coupler, of the reflective SOA. A second waveguide of the grating codirectional coupler is coupled to the first waveguide, a first grating is disposed on the first waveguide, a second grating disposed opposite to the first grating is disposed on the second waveguide, and the first grating and the second grating constitute a narrow-band pass filter. The second waveguide is connected to the reflective microring resonator.
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公开(公告)号：US12040593B2
公开(公告)日：2024-07-16
申请号：US17226977
申请日：2021-04-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jialin Zhao , Chengcheng Gui , Shengmeng Fu
IPC: H01S5/10 , H01S5/026 , H04B10/50 , H04B10/572
CPC classification number: H01S5/1092 , H01S5/026 , H04B10/503 , H04B10/572
Abstract: A multi-wavelength laser is provided, including a reference wavelength-tunable laser, N−1 secondary wavelength-tunable lasers, N beam splitters, a phase modulator, and N−1 frequency difference detection apparatuses. The reference wavelength-tunable laser is connected to one beam splitter which includes two output ports, and one of the output ports is connected to the phase modulator. The phase modulator is separately connected to the N−1 frequency difference detection apparatuses. The N−1 secondary wavelength-tunable lasers one-to-one correspond to remaining N−1 beam splitters and the N−1 frequency difference detection apparatuses. The secondary wavelength-tunable laser is connected to a corresponding beam splitter, the corresponding beam splitter includes two output ports, and one of the output ports is connected to a corresponding frequency difference detection apparatus. N is a positive integer not less than 2. A multi-wavelength optical signal generated by the phase modulator has a precise frequency spacing.
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公开(公告)号：US12107392B2
公开(公告)日：2024-10-01
申请号：US17063917
申请日：2020-10-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jialin Zhao , Wei Chen , Xiaolu Song
IPC: H01S5/14 , H01S5/02 , H01S5/02325 , H01S5/026 , H01S5/0687 , H01S5/10 , H01S5/50
CPC classification number: H01S5/142 , H01S5/026 , H01S5/1028 , H01S5/1032 , H01S5/50 , H01S5/021 , H01S5/02325 , H01S5/0261 , H01S5/0687
Abstract: Example wavelength tunable lasers are described. One example wavelength tunable laser includes a reflective semiconductor optical amplifier, three couplers, and at least two microring resonators. The reflective semiconductor optical amplifier is connected to one port of the first coupler. Some of the at least two microring resonators are arranged between another port of the first coupler and one port of the second coupler, the others of the at least two microring resonators are arranged between a third port of the first coupler and a second port of the second coupler, and a third port and a fourth port of the second coupler are connected to two ports of the third coupler.
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公开(公告)号：US11914268B2
公开(公告)日：2024-02-27
申请号：US17498335
申请日：2021-10-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chengcheng Gui , Jialin Zhao , Xiaolu Song
IPC: G02F1/35
CPC classification number: G02F1/3511 , G02F1/353 , G02F1/3542 , G02F2203/56
Abstract: An optical frequency comb light source and an optical frequency comb generation method, where the light source includes a laser diode, a coupler, a Kerr nonlinear device, a beam splitter, and a phase shifter. The laser diode is connected to one input port of the coupler, and the other input port of the coupler is connected to an output port of the phase shifter. An output port of the coupler is connected to an input port of the Kerr nonlinear device. An output port of the Kerr nonlinear device is connected to an input port of the beam splitter. One output port of the beam splitter is connected to an input port of the phase shifter. The other output port of the beam splitter is configured to output a plurality of optical frequency combs. A multi-wavelength light source with relatively high power may be provided.
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公开(公告)号：US11411652B2
公开(公告)日：2022-08-09
申请号：US17245958
申请日：2021-04-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Benbo Xu , Jialin Zhao , Zhen Dong
IPC: G02F1/00 , H04B10/50 , H04B10/516
Abstract: This application provides an example light source switching apparatus. The apparatus includes first and second multi-mode interference (MMI) couplers, and a phase modulator. The first MMI coupler includes four ports, where first and second ports are located on one side, and third and fourth ports are located on the other side. The second MMI coupler includes three ports, where fifth and sixth ports are located on one side, and a seventh port is located on the other side. The first and the second ports connect to the fifth and the sixth ports, respectively, to form two connections. The phase modulator is disposed on one of the two connections, and the seventh port connects to an optical modulator. Both the third and the fourth ports connect to a light source emitting continuous light, and the phase modulator selects one of the two light sources for output from the seventh port.
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