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公开(公告)号：US4128301A
公开(公告)日：1978-12-05
申请号：US782571
申请日：1977-03-29
Applicant: William K. Burns , A. Fenner Milton
Inventor： William K. Burns , A. Fenner Milton
CPC classification number: G02B6/29332 , G02B6/2821 , G02B6/29344
Abstract: An optical waveguide power divider which uses a two-dimensional slab waveguide. An input confined to one arm propagates to a point where synchronism between two closely adjacent guides is abruptly introduced by introducing an overlay with a fast taper. The coupled guides are here sufficiently synchronous and close together that the symmetrical and asymmetrical normal modes of the coupled structure will be excited, each with 1/2 of the input power. Synchronism is then slowly removed by tapering the overlay to zero so that mode "a" selects arm #1 while mode "b" selects arm #2. These latter changes are adiabatic, i.e., slow enough tAfter synchronism has been removed, the two arms may be spatially separated to split the power into two directions.
Abstract translation: 一种使用二维平板波导的光波导功率分配器。 限于一个臂的输入通过引入具有快速锥度的覆盖层而传播到两个相邻导轨之间的同步突然引入的点。 耦合的引导件在这里是充分同步的并且靠近在一起，使得耦合结构的对称和不对称的正常模式将被激励，每个具有1/2的输入功率。 然后通过使覆盖层逐渐变细，缓慢移除同步，使模式“a”在模式“b”选择手臂＃2时选择手臂＃1。 这些后面的改变是绝热的，即足够慢t当已经去除了同步之后，两个臂可以在空间上分离以将功率分成两个方向。
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公开(公告)号：US20240329315A1
公开(公告)日：2024-10-03
申请号：US18617839
申请日：2024-03-27
Applicant: TDK Corporation
Inventor： Yasuhiro TAKAGI , Hiroki HARA , Atsushi SHIMURA
CPC classification number: G02B6/29344 , G02B26/105
Abstract: The optical coupler is a multimode interference type optical coupler that couples a plurality of laser lights of different wavelengths. The optical coupler includes an optical coupling main body, two input taper portions which are tapered input ports that are disposed on the input side of the optical coupling main body and of which the width of each becomes narrower as it is away from a connection end with the optical coupling main body, and one output taper portion which is a tapered output port that is disposed on the output side of the optical coupling main body and of which the width becomes narrower as it is away from a connection end with the optical coupling main body.
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公开(公告)号：US20240219642A1
公开(公告)日：2024-07-04
申请号：US18539873
申请日：2023-12-14
Applicant: TDK CORPORATION
Inventor： Yasuhiro TAKAGI , Hiroki Hara , Atsushi Shimura , Hajime Utsunomiya , Jiro Yoshinari
IPC: G02B6/293
CPC classification number: G02B6/29344
Abstract: An optical coupler includes: light input ports on a first side surface; monitoring light output ports on a second side surface; one light output port on a third side surface; and multimode-interference-type optical coupling parts, a first multimode-interference coupling part is connected to a first light-input-side waveguide on the input side, and to a first monitoring-light-output-side waveguide and a first connecting waveguide on the output side, the second multimode-interference coupling part is connected to a second light-input-side waveguide and the first connecting waveguide on the input side, and to a second monitoring-light-output-side waveguide and a second connecting waveguide on the output side, and the third multimode-interference coupling part is connected to a third light-input-side waveguide and the second connecting waveguide on the input side, and connected to a third monitoring-light-output-side waveguide and a light-output-port-connected waveguide on the output side, and the monitoring-light-output-side waveguides are free of an intersection.
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公开(公告)号：US20240022329A1
公开(公告)日：2024-01-18
申请号：US18353084
申请日：2023-07-16
Applicant: Marvell Asia Pte Ltd
Inventor： Yun Wang , Hong Cai , Nathan Lin , Jie Lin
CPC classification number: H04B10/40 , H04B10/11 , G02B6/29344
Abstract: An optical transceiver includes optical circuitry disposed on a substrate and comprising a transmitter and a receiver. The circuitry includes least one multi-mode interferometer (MMI), including a multi-mode waveguide comprising an input face and an output face, the input and output faces being bisected by a longitudinal axis, the multi-mode waveguide having a predefined width transverse to the longitudinal axis. Ports are coupled to respective waveguides and are configured to launch one or more input beams through the input face and receive one or more output beams from the output face. The ports include, on at least one of the faces, two or more ports at respective locations that are offset transversely from the longitudinal axis by at least λ0/300 from respective base transverse displacements that are equal to integer fractions of the width.
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65.发明授权公开(公告)号：US11693188B2
公开(公告)日：2023-07-04
申请号：US17839173
申请日：2022-06-13
Applicant: The Regents of the University of California
Inventor： Tae Joon Seok , Ming Chiang A Wu
CPC classification number: G02B6/3546 , G02B6/3508 , G02B6/12007 , G02B6/29344 , G02B2006/12145
Abstract: A large-scale single-photonics-based optical switching system that occupies an area larger than the maximum area of a standard step-and-repeat lithography reticle is disclosed. The system includes a plurality of identical switch blocks, each of is formed in a different reticle field that no larger than the maximum reticle size. Bus waveguides of laterally adjacent switch blocks are stitched together at lateral interfaces that include a second arrangement of waveguide ports that is common to all lateral interfaces. Bus waveguides of vertically adjacent switch blocks are stitched together at vertical interfaces that include a first arrangement of waveguide ports that is common to all vertical interfaces. In some embodiments, the lateral and vertical interfaces include waveguide ports having waveguide coupling regions that are configured to mitigate optical loss due to stitching error.
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Patent Agency Ranking
公开(公告)号：US20190212496A1
公开(公告)日：2019-07-11
申请号：US16352636
申请日：2019-03-13
Applicant: INPHI CORPORATION
Inventor： Samira KARIMELAHI , Masaki KATO
CPC classification number: G02B6/29391 , G02B6/2856 , G02B6/29344 , G02B6/29352 , H04B10/25 , H04L25/03885
Abstract: The present disclosure provides an optical equalizer for photonics system in an electric-optical communication network. The optical equalizer includes an input port and an output port. Additionally, the optical equalizer includes a filter having a number of stages coupled to each other in a multi-stage series with an output terminal of any stage being coupled to an input terminal of an adjacent next stage while the input terminal of a first stage of the multi-stage series being coupled from the input port. Each stage includes a tap terminal configured to pass an optical power factored by a coefficient of multiplication from the corresponding input terminal of the stage to a tap-output path characterized by a corresponding phase delay. Furthermore, the optical equalizer includes a combiner configured to sum up the optical powers respectively from the number of tap-output paths of the multi-stage series to the output port.
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公开(公告)号：US20190196230A1
公开(公告)日：2019-06-27
申请号：US16293233
申请日：2019-03-05
Applicant: Attila Mekis , Adithyaram Narasimha , Jeremy Witzens
Inventor： Attila Mekis , Adithyaram Narasimha , Jeremy Witzens
CPC classification number: G02F1/0136 , G02B6/125 , G02B6/126 , G02B6/2726 , G02B6/2773 , G02B6/29344 , G02B6/34 , G02B6/4286 , G02B2006/12142 , G02F1/011 , G02F1/313
Abstract: A system for integrated power combiners is disclosed and may include receiving optical signals in input optical waveguides and phase-modulating the signals to configure a phase offset between signals received at a first optical coupler, where the first optical coupler may generate output signals having substantially equal optical powers. Output signals of the first optical coupler may be phase-modulated to configure a phase offset between signals received at a second optical coupler, which may generate an output signal having an optical power of essentially zero and a second output signal having a maximized optical power. Optical signals received by the input optical waveguides may be generated utilizing a polarization-splitting grating coupler to enable polarization-insensitive combining of optical signals. Optical power may be monitored using optical detectors. The monitoring of optical power may be used to determine a desired phase offset between the signals received at the first optical coupler.
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68.发明申请公开(公告)号：US20190052391A1
公开(公告)日：2019-02-14
申请号：US16059797
申请日：2018-08-09
Applicant: Luxtera, Inc.
Inventor： Mark Peterson , Subal Sahni , Peter De Dobbelaere
CPC classification number: H04J14/0278 , G02B6/29344 , G02B6/29367 , G02B6/4214 , G02B6/4215 , H04B10/40 , H04J14/0256
Abstract: Methods and systems for a free space CWDM MUX/DEMUX for integration with a grating coupler based silicon platform may include an optical assembly coupled to a photonic chip. The optical assembly includes a lens array on the top surface of the chip, an angled mirror, a plurality of transparent spacers, and a plurality of thin film filters. The optical assembly may receive an input optical signal comprising a plurality of optical signals at different wavelengths via an optical fiber coupled to the optical assembly, communicate the plurality of optical signals through a first of the plurality of transparent spacers, pass a first of the plurality of optical signals through a corresponding one of the plurality of thin film filters while reflecting others of the plurality of optical signals back into the first of the plurality of transparent spacers, and reflect the others of the plurality of signals towards a second of the plurality of thin film filters.
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公开(公告)号：US10054738B2
公开(公告)日：2018-08-21
申请号：US15438801
申请日：2017-02-22
Applicant: NTT ELECTRONICS CORPORATION
Inventor： Keiichi Morita , Kazumi Shimizu , Kouji Kawashima , Tomoharu Niitsu
CPC classification number: G02B6/12014 , G02B6/12011 , G02B6/2813 , G02B6/29344
Abstract: A technique that does not increase the circuit size, does not make the circuit design and manufacturing difficult, and can reduce insertion loss when light enters from a slab waveguide toward an arrayed waveguide or when the light enters from the arrayed waveguide toward the slab waveguide. An optical waveguide provided with a slab waveguide in which a grating is formed therein at a distance from an end, and an arrayed waveguide whose end is connected to an end of the slab waveguide at a position where a constructive interference portion of a self-image of the grating is formed. An arrayed waveguide grating provided with a first input/output waveguide, the above-mentioned optical waveguide where an end of the slab waveguide on the opposite side of the arrayed waveguide is connected to an end of the first input/output waveguide, a second slab waveguide connected to an end of the arrayed waveguide on the opposite side of the slab waveguide, and a second input/output waveguide connected to an end of the second slab waveguide on the opposite side of the arrayed waveguide.
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公开(公告)号：US10036853B1
公开(公告)日：2018-07-31
申请号：US15464805
申请日：2017-03-21
Applicant: INPHI CORPORATION
Inventor： Jie Lin
CPC classification number: G02B6/29344 , G02B6/12007
Abstract: A multiplexer/demultiplexer for at least two wavelengths in O-band. The multiplexer/demultiplexer includes a silicon waveguide block having a first port, a second/third port respectively in bar/cross position at an opposing end plane relative to the first port. The silicon waveguide block is configured to provide a general interference excitation of a light wave of a first wavelength and a second wavelength respectively selected from two windows in O-band. The light wave is either inputted via the first port and split into a first output light of the first wavelength out of the second port and a second output light of the second wavelength out of the third port, or is combined of a first input light of the first wavelength from the second port and a second input light of the second wavelength from the third port and outputted via the first port with both wavelengths.
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