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公开(公告)号：US12100934B2
公开(公告)日：2024-09-24
申请号：US18085643
申请日：2022-12-21
发明人： Mario Dagenais , Yang Zhang
IPC分类号： H01S5/00 , H01S5/02326 , H01S5/0237 , H01S5/06 , H01S5/10 , H01S5/14
CPC分类号： H01S5/141 , H01S5/02326 , H01S5/0237 , H01S5/0612 , H01S5/1032
摘要： A laser system for generating a narrow linewidth semiconductor light beam includes a substrate, a gain chip affixed on the substrate and configured to amplify light beam, and an optical feedback photonic chip affixed on the substrate, optically coupled to the gain chip, and configured to output light beam, which has a narrow linewidth around a resonant frequency of the optical feedback photonic chip, to the gain chip.
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公开(公告)号：US12100926B2
公开(公告)日：2024-09-24
申请号：US17243656
申请日：2021-04-29
发明人： Yuanbing Cheng , Heng Wang , Jing Dai , Yinghua Dong
CPC分类号： H01S3/10023 , G02B6/12009 , H01S5/141 , H04B10/691
摘要： An embodiment of the present invention provides a photodetector chip, including a substrate, a semiconductor optical amplification section, and a photodetection section. The substrate includes a surface, the photodetection section and the semiconductor optical amplification section are arranged on the substrate, and the photodetection section is located in an optical signal output direction of the semiconductor optical amplification section. The semiconductor optical amplification section amplifies and filters an input optical signal to output an amplified and filtered optical signal to the photodetection section. The photodetection section is configured to convert the amplified and filtered optical signal into an electrical signal. The semiconductor optical amplification section includes a grating, the grating includes a first grating and a second grating that are cascaded, and the first grating is a slanted grating. The first grating and the second grating are configured to filter an optical signal entering the semiconductor optical amplification section.
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公开(公告)号：US12095228B2
公开(公告)日：2024-09-17
申请号：US18337374
申请日：2023-06-19
CPC分类号： H01S5/125 , H01S5/02415 , H01S5/0262 , H01S5/0264 , H01S5/0612 , H01S5/0614 , H01S5/06256 , H01S5/1209 , H01S5/145
摘要： A laser comprising a laser cavity formed by a first optical reflector, a gain region, a second optical reflector having a plurality of reflection peaks, and at least one optically active region. The first mirror may be a DBR or comb mirror and the second mirror may be a comb mirror. The spectral reflectance of the second optical reflector is adjusted at least partially based on an electric signal received form the optically active region such that only one reflection peak is aligned with a cavity mode formed by the first and second reflector.
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公开(公告)号：US20240291237A1
公开(公告)日：2024-08-29
申请号：US18115339
申请日：2023-02-28
申请人： Axalume, Inc.
摘要： An optical source is described. This optical source may include: an optical cavity that includes at least one mirror; and a semiconductor laser chip having multiple epitaxial gain layers, where the epitaxial gain layers act as a gain medium that provides multiple lasing wavelengths in a band of frequencies without mode hopping and/or with significantly reduced mode beating below a predetermined value. Moreover, the optical source may include an optical component that selects laser modes of the optical cavity, where the optical component includes: an aperiodic grating; an echelle grating having a common arm that includes the epitaxial gain layers and multiple output arms that provide the lasing wavelengths; or a set of ring resonators that provide the lasing wavelengths.
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公开(公告)号：US20240266803A1
公开(公告)日：2024-08-08
申请号：US18434708
申请日：2024-02-06
申请人： DustPhotonics
发明人： Yoel Chetrit , Israel Weiss
CPC分类号： H01S5/141 , H01S5/4087
摘要： A method for operating multiple chip regions. The method includes aligning the multiple chip regions using first wavelength band signals, and conveying transmission signals of a second wavelength band signals. The multiple chip regions may be without a second wavelength band transmitter and include a path for receiving the second wavelength band signals from another chip.
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6.发明公开公开(公告)号：US20240258769A1
公开(公告)日：2024-08-01
申请号：US18162517
申请日：2023-01-31
CPC分类号： H01S5/141 , H01S3/10092 , H01S5/1007 , H01S5/12 , H01S5/323 , H01S5/50
摘要： A laser device comprises a gain chip that emits light, and a photonics chip optically coupled to the gain chip. The photonics chip comprises a waveguide platform including an input waveguide optically coupled to the gain chip. The input waveguide optical communicates with a cascaded arrangement of waveguide grating structures on the waveguide platform. The grating structures comprise a first grating structure that produces a single resonance frequency within a stopband, and a second grating structure in optical communication with the first grating structure. The second grating structure diffracts a narrowband resonance, overlapping with the stopband of the first grating structure, back toward the gain chip, while passing any light outside of the stopband of the first grating structure out of the waveguide platform. The grating structures cooperate to yield a single resonance frequency that feeds back into the gain chip to produce a self-injection lock for the laser device.
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公开(公告)号：US12051884B2
公开(公告)日：2024-07-30
申请号：US17045003
申请日：2019-03-28
CPC分类号： H01S5/1014 , H01S5/021 , H01S5/0261 , H01S5/142
摘要： A wavelength tunable laser formed on a substrate made of single-crystal silicon is provided. The wavelength tunable laser includes a light emitting portion made of a III-V compound semiconductor, and external resonators provided with an optical filter. Cores included in the external resonators are made of one of SiN, SiON, and SiOn (n is smaller than 2).
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公开(公告)号：US12046869B1
公开(公告)日：2024-07-23
申请号：US17321671
申请日：2021-05-17
发明人： Mark Mordarski , Bryan Lochman , Michael Miceli , Connor Baker
IPC分类号： H01S3/08 , H01S5/02325 , H01S5/14 , H01S5/40 , F16B2/24
CPC分类号： H01S5/02325 , H01S5/141 , H01S5/4012 , H01S5/4087 , F16B2/243
摘要： In various embodiments, a spring is utilized to fix an optic to a mechanical mount in a laser system. Such springs may consist of a single length of elastic material having first and second ends. The length of elastic material may define first and second off-center bends providing first and second base portions, as well as a central bend that is generally U-shaped and that defines first and second contact portions. The first and second contact portions are opposed to each other across the central bend to thereby resist compression of the first and second contact portions toward the first and second base portions.
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公开(公告)号：US20240235155A1
公开(公告)日：2024-07-11
申请号：US18366705
申请日：2023-08-08
申请人： Marvell Asia Pte Ltd
发明人： Xiaoguang HE , Charles Chih-Chin LIN , Samira KARIMELAHI , Masaki KATO , Radhakrishnan NAGARAJAN
CPC分类号： H01S5/142 , H01S3/10053 , H01S5/50 , H01S5/3013
摘要： An optoelectronic device includes a reflective semiconductor optical amplifier (RSOA), which includes a gain medium to amplify laser radiation within a given gain band, a first reflector at a first end of the gain medium, and a waveguide coupled to convey the laser radiation into and out of a second end of the gain medium. An external laser cavity, disposed on an optical substrate, is optically coupled to the waveguide. The external laser cavity includes a second reflector, a comb filter, disposed between the second reflector and the RSOA and configured to pass a set of distinct wavelength sub-bands within the gain band, the set of distinct wavelength sub-bands defining a comb, and a bandpass filter between the second reflector and the RSOA in series with the comb filter, having a passband encompassing a subset of the wavelength sub-bands in the comb.
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公开(公告)号：US20240154388A1
公开(公告)日：2024-05-09
申请号：US18412828
申请日：2024-01-15
发明人： Chen-lei LI , Xue-zhe ZHENG
CPC分类号： H01S5/141 , H01S5/026 , H01S5/04256 , H01S5/0612 , H01S5/1007
摘要： An external cavity laser and a tuning method therefor are provided. The external cavity laser includes a gain chip, and a tunable reflector. The tunable reflector includes a main waveguide, a beam splitter, a first branch waveguide, a first photonic crystal modulator, a second branch waveguide, and a second photonic crystal modulator. The beam splitter is configured to equally split the optical signal transmitted by the main waveguide into a first optical signal and a second optical signal and is configured to transmit the first optical signal to a first branch waveguide and the second optical signal to a second branch waveguide. A first photonic crystal modulator is configured to tune the first optical signal transmitted by the first branch waveguide. A second photonic crystal modulator is configured to tune the second optical signal transmitted by the second branch waveguide.
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