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公开(公告)号：US12044623B2
公开(公告)日：2024-07-23
申请号：US17584469
申请日：2022-01-26
CPC分类号： G01N21/645 , B01L3/502715 , G02B6/12007 , G02F1/217 , B01L2200/10 , B01L2300/0654 , B01L2300/0663 , B01L2300/0816 , G01N2021/6417 , G01N2021/6419 , G01N2021/6484 , G01N2201/0635 , G01N2201/088 , G02B6/2813
摘要： Systems, methods, and techniques for optofluidic analyte detection and analysis using multi-mode interference (MMI) waveguides are disclosed herein. In some embodiments, spatially and spectrally multiplexed optical detection of particles is implemented on an optofluidic platform comprising multiple analyte channels intersecting a single MMI waveguide. In some embodiments, multi-stage photonic structures including a first stage MMI waveguide for demultiplexing optical signals by spatially separating different wavelengths of light from one another may be implemented. In some embodiments, a second stage may use single-mode waveguides and/or MMI waveguides to create multi-spot patterns using the demultiplexed, spatially separated light output from the first stage. In some embodiments, liquid-core MMI (LC-MMI) waveguides that are tunable by replacing a liquid core, heating/cooling the liquid core, and/or deforming the LC-MMI to change its width may be implemented in one or more of the analyte detection/analysis systems disclosed herein.
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公开(公告)号：US11852878B2
公开(公告)日：2023-12-26
申请号：US17840178
申请日：2022-06-14
发明人： Masaki Sugiyama
CPC分类号： G02B6/4215 , G02B6/2813 , G02B6/29349 , G02B6/4287
摘要： An optical device includes a modulator and a tap coupler. The modulator includes an optical waveguide that is formed of a thin-film lithium niobate (LN) substrate and through which light passes, and an electrode that applies voltage to the optical waveguide, and modulates a phase of light that passes through the optical waveguide in accordance with an electric field in the optical waveguide, where the electric field corresponds to the voltage. The tap coupler includes at least a part formed of the thin-film LN substrate, and splits a part of the light that passes through an inside of the optical waveguide. The tap coupler includes a delayed interferometer that splits a part of the light that passes through the optical waveguide, at a split ratio corresponding to a phase difference of light that passes through an inside of the tap coupler from the optical waveguide.
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公开(公告)号：US20230333321A1
公开(公告)日：2023-10-19
申请号：US18001974
申请日：2021-06-18
发明人： Lauri LEHTIMÄKI , Mikko HARJANNE , Matteo CHERCHI
CPC分类号： G02B6/2726 , G02B6/2813
摘要： A polarizing device includes:
a first waveguide to guide input light,
a second waveguide to guide TE-polarized light,
wherein the second waveguide includes a tapered input portion to polarization-selectively couple TE-polarized light from the first waveguide to the second waveguide, wherein the tapered input portion symmetrically overlaps the first waveguide, and the thickness of the tapered input portion has been selected to substantially prevent coupling of TM-polarized light from the first waveguide to the second waveguide, wherein the refractive index of the second waveguide is higher than the refractive index of the first waveguide.-
4.发明申请公开(公告)号：US20180252865A1
公开(公告)日：2018-09-06
申请号：US15909263
申请日：2018-03-01
发明人： Yoshihiro Yoneda , Takuya Okimoto
CPC分类号： G02F1/2257 , G02B6/12004 , G02B6/14 , G02B6/2813 , G02B2006/12078 , G02B2006/12097 , G02B2006/12123 , G02B2006/1215 , G02B2006/12152 , G02F1/0353 , G02F1/21 , G02F2201/07 , G02F2202/06
摘要： A functional optical device is disclosed. The optical functional device integrates a coupling unit, a light-receiving element and an optical waveguide on a semiconductor substrate. The coupling unit extracts an optical signal by interfering between signal light and local light. The optical waveguide carries the optical signal from the coupling unit to the light-receiving element. The light-receiving element receives the optical signal. The semiconductor substrate provides a heavily doped conducting layer and a buffer layer that is un-doped or lightly doped with impurities by density smaller than density of impurities in the conducting layer. The conducting layer and the buffer layer continuously and evenly expand from the optical waveguide to the light-receiving element.
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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
CPC分类号： G02B6/12014 , G02B6/12011 , G02B6/2813 , G02B6/29344
摘要： 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：US20180164506A1
公开(公告)日：2018-06-14
申请号：US15839646
申请日：2017-12-12
CPC分类号： G02B6/2813 , G01B9/02097 , G02B6/125 , G02B2006/12159 , G02F1/011
摘要： An optical interferometer based on multi-mode interference (MMI) devices includes an input port, an output port, a first MMI device connected to the input port at an input face of the first MMI device, a second MMI device connected to the first output port at an output face of the second MMI device. In the optical interferometer, an output face of the first MMI device and an input face of the second MMI device are directly connected, the first MMI device includes a first and a second self-imaging points at an interface between the first MMI device and the second MMI device, and a propagation axis of the second MMI device is tilted with respect to a propagation axis of the first MMI device, causing a path length difference between an upper optical path via the first self-imaging point and a lower optical path via the second self-imaging point.
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公开(公告)号：US20180143376A1
公开(公告)日：2018-05-24
申请号：US15568610
申请日：2016-05-27
发明人： Shin Kamei , Makoto Jizodo , Hiroshi Fukuda , Kiyofumi Kikuchi , Ken Tsuzuki
摘要： A coherent optical mixer circuit is provided that can measure a phase error without requiring a step of cutting away a delay circuit. Odd-numbered or even-numbered two of four inputs of an 4-input-and-4-output multimode interference circuit are connected to an input mechanism. The four outputs of the multimode interference circuit are all connected to an output mechanism to the exterior. Other two inputs of the multimode interference circuit are connected to two monitor waveguides. One of the monitor waveguide is longer than the other to configure a light delay circuit. The monitor waveguides constituting the light delay circuit are connected to the respective outputs of a 2-branched light splitter. The 2-branched light splitter has an input connected to a monitor light input mechanism from the exterior via a monitor input waveguide.
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公开(公告)号：US20180003897A1
公开(公告)日：2018-01-04
申请号：US15708578
申请日：2017-09-19
发明人： Yangjin MA
CPC分类号： G02B6/2813 , G02B6/1228 , G02B6/125 , G02B6/29344 , G02B27/0012 , G02B2006/12147 , G02B2006/1215 , G02B2006/12159
摘要： An optimized SOI 2×2 multimode interference (MMI) coupler is designed by use of the particle swarm optimization (PSO) algorithm. Finite Difference Time Domain (FDTD) simulation shows that, within a footprint of 9.4×1.6 μm2,
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公开(公告)号：US09851615B2
公开(公告)日：2017-12-26
申请号：US15483553
申请日：2017-04-10
发明人： Charles M. Jewart , Yannick Lize , Karl Kissa
CPC分类号： G02F1/2257 , G02B6/00 , G02B6/125 , G02B6/28 , G02B6/2813 , G02F1/225 , G02F2001/212 , G02F2001/217 , G02F2201/58
摘要： An optical modulator is disclosed, in which a MMI couplers are used for input signal splitting for branching into individual Mach-Zehnder interferometers, as well as for branching and combining from individual Mach-Zehnder waveguides. MMI couplers, splitters, and combiners may be cascaded and combined with single-mode Y-splitters and combiners to provide modulators of various types, including dual polarization, quadrature phase Mach-Zehnder interferometer base optical modulators.
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公开(公告)号：US09606292B2
公开(公告)日：2017-03-28
申请号：US15027133
申请日：2015-12-03
申请人： PGS Geophysical AS , Willard Womack
发明人： Willard Womack
IPC分类号： G02B6/00 , G02B6/42 , G02B6/125 , G01H9/00 , G01V1/20 , G02B6/36 , G02B6/28 , G01D5/353 , G01V8/24 , G02B6/02 , G02B6/12 , G02B6/122 , G02B6/30
CPC分类号： G02B6/125 , G01D5/353 , G01H9/004 , G01V1/20 , G01V8/24 , G01V2210/1427 , G02B6/02033 , G02B6/02076 , G02B6/12004 , G02B6/12016 , G02B6/1228 , G02B6/2804 , G02B6/2813 , G02B6/30 , G02B6/3608
摘要： Example devices are optical dividers including: a first optical coupler; a second optical coupler; and a third optical coupler. The devices also comprise a first optical fiber integrated in the first optical coupler, the first optical fiber coupled to an optical combiner, and a second optical fiber integrated in the first optical coupler and in the second optical coupler, the second optical fiber coupled to the optical combiner. The devices further comprise a third optical fiber integrated in the second optical coupler and in the third optical coupler, the third optical fiber coupled to the optical combiner. The optical combiner includes: a first output coupler; a second output coupler; and the optical combiner couples a subset of the first through third optical fibers to the first output coupler; and the optical combiner couples a subset of the first through third optical fibers to the second output coupler.
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