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公开(公告)号：US20240134113A1
公开(公告)日：2024-04-25
申请号：US18191683
申请日：2023-03-27
发明人： Peter HOFMANN , Peter JAKOPIC , Martin H. MUENDEL
IPC分类号： G02B6/02 , C03B37/012 , C03B37/018 , C03B37/027
CPC分类号： G02B6/02338 , C03B37/01217 , C03B37/01815 , C03B37/02718 , C03B37/02736 , G02B6/02395
摘要： In some implementations, a substrate tube in a modified chemical vapor deposition process may rotate while glass precursors flow into the substrate tube at a fixed rate. Dopants may be delivered into the substrate tube while heat is applied to the substrate tube to deposit, on an inner wall of the substrate tube, a layer of material including the glass precursors and the dopants. A lateral position of an exit of an injection tube used to deliver the dopants may be adjusted while the substrate tube is rotated and heat is applied to the substrate tube such that the material deposited on the inner wall of the substrate tube has an azimuthally non-uniform doping concentration. Alternatively, a rotation of the substrate tube may be adjusted to create opposing temperature gradients within the substrate tube, causing non-uniform layer deposition to occur on different sides of the substrate tube in alternating passes.
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公开(公告)号：US20240118395A1
公开(公告)日：2024-04-11
申请号：US18500324
申请日：2023-11-02
CPC分类号： G01S7/484 , H01S5/0428 , H04B10/50 , H04B10/524
摘要： A driver circuit, for generating narrow electrical pulses of high repetition rate with high peak current and low after pulse ringing to drive an optical load, may include a source, a first circuit path, and a second circuit path. The first circuit path may be connected to the source and may include inductive elements and a switch. The switch being in a closed state may charge current in the inductive elements through the first circuit path. The second circuit path may connect to the optical load and may be connected to the source. The second circuit path may include the inductive elements and a capacitive element in series with the optical load. The switch transitioning from the closed state to an open state may discharge current from the inductive elements through the second circuit path to provide an electrical pulse to the optical load.
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公开(公告)号：US20240097406A1
公开(公告)日：2024-03-21
申请号：US18066728
申请日：2022-12-15
IPC分类号： H01S5/40 , H01S5/02255 , H01S5/028 , H01S5/10
CPC分类号： H01S5/4087 , H01S5/02255 , H01S5/028 , H01S5/1082
摘要： In some implementations, a laser diode array may comprise a cavity that includes a rear facet and a front facet and multiple emitters that are transversely single mode and disposed within the cavity. In some implementations, the multiple emitters each include a seeding section having a constant emitter width that is single mode at the rear facet and a flared section having a monotonically expanding emitter width that increases adiabatically over a majority of a length of the cavity such that outputs from the multiple emitters are single mode at the front facet. In some implementations, the emitter width is less than twenty micrometers at the front facet.
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公开(公告)号：US11936158B2
公开(公告)日：2024-03-19
申请号：US16949213
申请日：2020-10-20
CPC分类号： H01S5/04256 , H01S5/423 , H01S5/18394
摘要： In some implementations, a vertical-cavity surface-emitting laser (VCSEL) array may comprise a plurality of channels, a plurality of traces, and a plurality of emitters. A channel, of the plurality of channels, may include a set of emitters, of the plurality of emitters, arranged in a row of emitters. The channel may include a trace, of the plurality of traces, that has a trace width that is tapered along a length of the trace. Numerous other aspects are provided.
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15.发明公开公开(公告)号：US20240080106A1
公开(公告)日：2024-03-07
申请号：US18066001
申请日：2022-12-14
发明人： Joe Qingzhe WEN , Zhong PAN
IPC分类号： H04B10/61
CPC分类号： H04B10/614 , H04B10/6163
摘要： In some implementations, an optical receiver includes a polarization beam splitter configured to split a reception signal into a first polarization reception signal and a second polarization reception signal, a first demultiplexing component configured to demultiplex the first polarization reception signal into a first optical signal and a second optical signal associated with a first polarization, a second demultiplexing component configured to demultiplex the second polarization reception signal into a third optical signal and a fourth optical signal associated with a second polarization, a first demodulation component configured to mix the first optical signal and the third optical signal with a first local oscillator signal to demodulate the first optical signal and the third optical signal, and a second demodulation component configured to mix the second optical signal and the fourth optical signal with a second local oscillator signal to demodulate the second optical signal and the fourth optical signal.
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公开(公告)号：US20240036255A1
公开(公告)日：2024-02-01
申请号：US17936114
申请日：2022-09-28
发明人： Ning LIU , Jeff GREGG , Gongwen ZHU , Xiang PENG , Guan SUN , Matthew KUTSURIS
CPC分类号： G02B6/2552 , H01S3/094053 , G02B6/04
摘要： A system may perform an uptapering process to cause a signal fiber to have a fiber core with a first uptapered thickness profile and a fiber cladding with a second uptapered thickness profile. The system may perform, after performing the uptapering process, an uptapering removal process to cause the fiber cladding of the signal fiber to not have the second uptapered thickness profile. The system may perform, after performing the uptapering removal process, a bundling process to bundle the signal fiber and a set of one or more pump fibers in a bundle configuration. The system may perform, after performing the bundling process, a bundle unification process to cause the bundle configuration to form a unified bundle configuration. The system may perform, after performing the bundle unification process, an attachment process to cause an end of the unified bundle configuration to attach to an end of an output fiber.
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17.发明公开公开(公告)号：US20240036174A1
公开(公告)日：2024-02-01
申请号：US18487541
申请日：2023-10-16
发明人： Hao HUANG , Mikhail DOLGANOV , Lijun ZHU
IPC分类号： G01S7/4861 , G01S7/4865 , G02F1/01 , G01S7/486 , H01S5/042 , H03K3/53
CPC分类号： G01S7/4861 , G01S7/4865 , G02F1/0121 , G01S7/4868 , H01S5/042 , H01S5/0428 , H03K3/53 , G02F2203/26
摘要： In some implementations, an electrical drive circuit may generate a rectangular optical pulse using cathode pre-charge and cathode-pull compensation. The electrical drive circuit may include an anode and a cathode to connect an optical load, a switch, a first source connected between the anode and a ground, a rectifier connected between the cathode and the switch, a capacitor connected in parallel with the rectifier, a second source connected to the ground, and an inductor connected between the switch and the second source. In some implementations, when the switch is closed and the optical load is connected, a first current is provided to the optical load through the first source, the rectifier, and the switch, and a second current is provided to the optical load through the first source, the capacitor, and the switch, where a rise time of the first current complements a fall time of the second current.
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公开(公告)号：US20240019551A1
公开(公告)日：2024-01-18
申请号：US17938848
申请日：2022-10-07
发明人： James CHEN , Michael MILLER , Eric R. HEGBLOM , Lijun ZHU , Paul COLBOURNE
CPC分类号： G01S7/4817 , G01S17/89 , G01S7/4816 , G01S7/4815
摘要： In some implementations, a light detection and ranging (LIDAR) system includes a vertical cavity surface emitting laser (VCSEL) array including a plurality of VCSELs. The VCSEL array may have a first aspect ratio. The LIDAR system may include a set of transmission optics configured to receive light from the VCSEL array and to illuminate a field of view having a second aspect ratio that is greater than the first aspect ratio. The LIDAR system may include an image sensor array configured for line readout. The image sensor array may have a third aspect ratio that is different from the first aspect ratio. The LIDAR system may include a set of reception optics configured to image light reflected from objects in the field of view, having the second aspect ratio, onto the image sensor array having the third aspect ratio.
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公开(公告)号：US11817672B2
公开(公告)日：2023-11-14
申请号：US17582505
申请日：2022-01-24
IPC分类号： H01S3/1118 , H01S3/067 , H01S3/081 , H01S3/00
CPC分类号： H01S3/1118 , H01S3/0675 , H01S3/06791 , H01S3/0811 , H01S3/0812 , H01S3/0057 , H01S2301/04 , H01S2301/085
摘要： A pulse stretching fiber oscillator (or laser cavity) may comprise a chirped fiber Bragg grating (CFBG) and an optical circulator arranged such that a first portion of a beam that is transmitted through the CFBG continues to propagate through the laser cavity while a second portion of the beam that is reflected from the CFBG is stretched and chirped by the CFBG and directed out of the laser cavity by the optical circulator. Accordingly, a configuration of the CFBG and the optical circulator in the laser cavity may enable pulse stretching contemporaneous with outcoupling, which may prevent deleterious nonlinear phase from accumulating prior to stretching.
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公开(公告)号：US11777280B2
公开(公告)日：2023-10-03
申请号：US16947086
申请日：2020-07-17
发明人： Albert Yuen , Ajit Vijay Barve
CPC分类号： H01S5/423 , H01S5/028 , H01S5/0282 , H01S5/0425 , H01S5/04254 , H01S5/04256 , H01S5/18311 , H01S5/18305 , H01S5/18377 , H01S2301/176
摘要： An emitter array may comprise a plurality of emitters that includes two adjacent emitters. The emitter array may comprise a plurality of emitters that includes two adjacent emitters. The ohmic metal layer may include a portion that is shared by, and located between, the two adjacent emitters. The emitter array may comprise a protective layer over the ohmic metal layer. The emitter array may comprise a via through the protective layer to the portion. The via is shared by, and located between, the two adjacent emitters.
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