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公开(公告)号：US10923877B2
公开(公告)日：2021-02-16
申请号：US15855334
申请日：2017-12-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Kaisheng Chen , Hongmin Chen
IPC: G02B6/42 , H01S5/026 , H01S5/10 , H01S5/02 , H01S5/022 , H01S5/00 , H01S5/0683 , G02B6/12 , G02B6/125 , H01S5/06
Abstract: Embodiments of the present disclosure relate to a surface-mount laser apparatus. One example apparatus includes an on-chip laser, a passive waveguide, and a waveguide detector. The waveguide detector includes a first ridge waveguide. The on-chip laser includes a second ridge waveguide. The on-chip laser is coupled with the passive waveguide by the second ridge waveguide, and the waveguide detector is coupled with the passive waveguide by the first ridge waveguide.
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公开(公告)号：US10581222B2
公开(公告)日：2020-03-03
申请号：US16034471
申请日：2018-07-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jifang He , Hongmin Chen , Hongbing Lei , Xiao Andy Shen
IPC: H01S3/13 , H01S5/0683 , H01S3/105 , H01S5/0687 , H01S5/0625 , H01S5/125 , H01S5/026 , H01S5/12 , H01S5/06 , H01S5/32
Abstract: A tunable laser is provided, including a first reflector, a second reflector, a phase adjustment area, a gain area, a first detector, a second detector, and a controller. The phase adjustment area is located between the first reflector and the gain area, the gain area is located between the phase adjustment area and the second reflector, a reflectivity of the first reflector is adjustable, and a reflectivity of the second reflector is adjustable. The first detector is configured to convert an optical signal of the first reflector into a first electrical signal. The second detector is configured to convert an optical signal of the second reflector into a second electrical signal. The controller is configured to adjust at least one of the reflectivity of the first reflector or the reflectivity of the second reflector based on the first electrical signal and the second electrical signal.
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公开(公告)号：US20220149972A1
公开(公告)日：2022-05-12
申请号：US17587553
申请日：2022-01-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hongmin Chen , Shuangyuan Wu , Lin Wu , Lantian Liao , Xiaogeng Xu
Abstract: A multi-wavelength light source includes a laser, an optical modulator, an optical mixer, an optical demultiplexer, and an optical power adjuster that are sequentially coupled. The laser is configured to generate a first optical signal. The optical modulator modulates the first optical signal, to generate a second optical signal, where the second optical signal includes at least two wavelength components. The optical mixer mixes frequencies based on the at least two wavelength components to generate a third optical signal, where the third optical signal includes at least four wavelength components. The demultiplexer separates the at least four wavelength components. The optical power adjuster adjusts, based on a specified power threshold, a power of each of the wavelength components obtained by separation by the demultiplexer.
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公开(公告)号：US10666014B2
公开(公告)日：2020-05-26
申请号：US16138648
申请日：2018-09-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jifang He , Hongmin Chen , Hongbing Lei , Xiao Andy Shen
Abstract: A wavelength tunable laser includes: a heating layer, a dielectric layer, reflectors, a transport layer, a support layer, and a substrate layer. The heating layer is located above the transport layer; the transport layer is located above the support layer, and the transport layer includes an upper cladding layer, a waveguide layer, and a lower cladding layer from top to bottom; the reflector is located in the transport layer; the support layer has a protection structure, where the protection structure forms a hollow structure together with the transport layer and the substrate layer, and the hollow structure has a support structure; and the substrate layer is located below the support layer. The heating layer, the reflector, and a part of the transport layer form a suspended structure to prevent heat dissipation. Thus thermal tuning efficiency can be improved, and power consumption can be lowered.
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公开(公告)号：US10931085B2
公开(公告)日：2021-02-23
申请号：US16656219
申请日：2019-10-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lin Wu , Hongmin Chen
Abstract: A super structure grating spatially performs amplitude and phase modulation on a uniform grating using a modulation function to generate a comb reflection spectrum. (N+1) modulation function discrete values are obtained after discretization processing is performed on the modulation function using N thresholds. Each of the (N+1) modulation function discrete values corresponds to one section of optical waveguide whose refractive index is uniform or corresponds to one section of the uniform grating. A reflectivity and a full width half maximum (FWHM) of a reflection peak of the super structure grating is adjusted based on a relationship of a ratio of a length of an optical waveguide corresponding to at least one of the (N+1) modulation function discrete values to a total grating length of the super structure grating, and based on the total grating length of the super structure grating.
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Patent Agency Ranking
公开(公告)号：US11990987B2
公开(公告)日：2024-05-21
申请号：US17587553
申请日：2022-01-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hongmin Chen , Shuangyuan Wu , Lin Wu , Lantian Liao , Xiaogeng Xu
CPC classification number: H04J14/0221 , H04B10/505
Abstract: A multi-wavelength light source includes a laser, an optical modulator, an optical mixer, an optical demultiplexer, and an optical power adjuster that are sequentially coupled. The laser is configured to generate a first optical signal. The optical modulator modulates the first optical signal, to generate a second optical signal, where the second optical signal includes at least two wavelength components. The optical mixer mixes frequencies based on the at least two wavelength components to generate a third optical signal, where the third optical signal includes at least four wavelength components. The demultiplexer separates the at least four wavelength components. The optical power adjuster adjusts, based on a specified power threshold, a power of each of the wavelength components obtained by separation by the demultiplexer.
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公开(公告)号：US20210288469A1
公开(公告)日：2021-09-16
申请号：US17334000
申请日：2021-05-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hongmin Chen , Can Zhang
Abstract: This application provides a two-segment DBR laser and a monolithically integrated array light source chip, and relates to the field of optical communications. The two-segment DBR laser includes a grating region, a gain region, and a broadband reflector. The grating region and the broadband reflector are respectively disposed at two ends of the gain region. The grating region includes a first bottom liner, a first support structure, a first ridge waveguide structure, and a first heater. The first ridge waveguide structure is fastened by the first support structure and suspended in midair above the first bottom liner, and the first bottom liner, the first support structure, and the first ridge waveguide structure jointly form a cavity. The first heater is located on a surface that is of the first ridge waveguide structure and that faces away from the cavity.
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公开(公告)号：US20200052467A1
公开(公告)日：2020-02-13
申请号：US16656219
申请日：2019-10-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lin Wu , Hongmin Chen
Abstract: A super structure grating spatially performs amplitude and phase modulation on a uniform grating using a modulation function to generate a comb reflection spectrum. (N+1) modulation function discrete values are obtained after discretization processing is performed on the modulation function using N thresholds. Each of the (N+1) modulation function discrete values corresponds to one section of optical waveguide whose refractive index is uniform or corresponds to one section of the uniform grating. A reflectivity and a full width half maximum (FWHM) of a reflection peak of the super structure grating is adjusted based on a relationship of a ratio of a length of an optical waveguide corresponding to at least one of the (N+1) modulation function discrete values to a total grating length of the super structure grating, and based on the total grating length of the super structure grating.
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公开(公告)号：US20190027896A1
公开(公告)日：2019-01-24
申请号：US16138648
申请日：2018-09-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jifang He , Hongmin Chen , Hongbing Lei , Xiao Andy Shen
CPC classification number: H01S5/0612 , H01S5/02453 , H01S5/02461 , H01S5/0261 , H01S5/0625 , H01S5/06256 , H01S5/1003 , H01S5/125 , H01S5/2045 , H01S5/2086 , H01S5/209 , H01S5/34326 , H01S5/3438
Abstract: A wavelength tunable laser includes: a heating layer, a dielectric layer, reflectors, a transport layer, a support layer, and a substrate layer. The heating layer is located above the transport layer; the transport layer is located above the support layer, and the transport layer includes an upper cladding layer, a waveguide layer, and a lower cladding layer from top to bottom; the reflector is located in the transport layer; the support layer has a protection structure, where the protection structure forms a hollow structure together with the transport layer and the substrate layer, and the hollow structure has a support structure; and the substrate layer is located below the support layer. The heating layer, the reflector, and a part of the transport layer form a suspended structure to prevent heat dissipation. Thus thermal tuning efficiency can be improved, and power consumption can be lowered.
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公开(公告)号：US11211767B2
公开(公告)日：2021-12-28
申请号：US16674283
申请日：2019-11-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lin Wu , Hongmin Chen
Abstract: A reflector structure for a tunable laser and a tunable laser. A super structure grating is used as a reflector structure, and a suspended structure is formed around a region in which the super structure grating is located, to implement, using the suspended structure, thermal isolation around the region in which the super structure grating is located, and increase thermal resistance, such that less heat is lost, and heat is concentrated in the region in which the super structure grating is located, thereby improving thermal tuning efficiency of the reflector structure. Moreover, lateral support structures are disposed on two sides of the suspended structure, to provide a mechanical support for the suspended structure. In addition, regions in the super structure grating that correspond to any two lateral support structures on a same side of the suspended structure fall at different locations in a spatial period of the super structure grating.
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