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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：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：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：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：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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公开(公告)号：US20200076155A1
公开(公告)日：2020-03-05
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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