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公开(公告)号：US20220214568A1
公开(公告)日：2022-07-07
申请号：US17605202
申请日：2020-04-22
摘要： A method of fabricating a gyrotropic device (e.g., an optical isolator) includes: providing a substrate comprising a waveguide layer and forming an optical isolator active layer on the waveguide layer of the substrate. Forming the optical isolator active layer includes, for a specified composition of the optical isolator active layer, deriving at least one sputtering process parameter, performing sputtering of a plurality of targets according to the at least one sputtering process parameter to deposit the optical isolator active layer on the waveguide layer of the substrate, measuring an initial value of a bias voltage at a first target of the plurality of targets; and throughout deposition of the optical isolator active layer, maintaining the bias voltage at the initial value to within a predetermined threshold of the initial value.
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公开(公告)号：US11378829B2
公开(公告)日：2022-07-05
申请号：US16936319
申请日：2020-07-22
申请人： Syght, Inc.
摘要： A spatial light modulator system includes a concentration layer including an array of optical concentrators, such that each concentrator concentrates a portion of an input light beam. A modulation layer includes an array of light modulators each in optical communication with one of the optical concentrators for modulating the portion of the input light beam. The light modulators are spaced apart from one another in the modulation layer to form gaps between adjacent ones of the light modulators. A coil of each light modulator can surround a Faraday element or core containing a Faraday material to control a magnetic state of a Faraday material responsive to control signals.
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公开(公告)号：US11092826B2
公开(公告)日：2021-08-17
申请号：US16556577
申请日：2019-08-30
IPC分类号： G02F1/095
摘要： A magneto-optical waveguide device includes a waveguide coupled with a magneto-optical crystal material. The magneto-optical waveguide device includes a patterned nanostructure within the magneto-optical crystal material that includes an internal optical waveguide through the magneto-optical crystal material. The patterned nanostructure modifies the refractive index of the magneto-optical crystal material below diffraction limit. The patterned nanostructure creates metamaterial effective properties that optimize core-cladding inside the magneto-optical crystal material to create the optical waveguide.
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公开(公告)号：US20210072568A1
公开(公告)日：2021-03-11
申请号：US16952013
申请日：2020-11-18
申请人： The Research Foundation for The State University of New York , Government of the United States, as Represented by the Secretary of the Air Force , Morton Photonics Incorporated
摘要： There is set forth herein an integrated photonics structure having a waveguide disposed within a dielectric stack of the integrated photonics structure, wherein the integrated photonics structure further includes a field generating electrically conductive structure disposed within the dielectric stack; and a heterogenous structure attached to the integrated photonics structure, the heterogenous structure having field sensitive material that is sensitive to a field generated by the field generating electrically conductive structure. There is set forth herein a method including fabricating an integrated photonics structure, wherein the fabricating an integrated photonics structure includes fabricating a waveguide within a dielectric stack, wherein the fabricating an integrated photonics structure further includes fabricating a field generating electrically conductive structure within the dielectric stack; and attaching a heterogenous structure to the integrated photonics structure, the heterogenous structure having field sensitive material that is sensitive to a field generated by the field generating electrically conductive structure.
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公开(公告)号：US10331009B2
公开(公告)日：2019-06-25
申请号：US15313133
申请日：2015-05-22
摘要： The present invention is based on a two-dimensional photonic crystal where are inserted defects that originate two waveguides and one resonant cavity. An electromagnetic signal that crosses the device is confined in the interior of the defects, due to the photonic band gap associated with the periodic structure that surrounds it. Its main function is the control of the flux of an electromagnetic signal over a communication channel, blocking (state off) or allowing (state on) the passage of the signal. It also promotes the change in the propagation direction of an electromagnetic signal by an angle of 120 degrees, providing greater flexibility in the design of integrated optical systems. The working principle of the device is based on the excitation of dipole modes in its resonant cavity, accordingly to the application of an external DC magnetic field on the magneto-optical material that constitutes it. In states on and off the magneto-optical material is magnetized and nonmagnetized, respectively.
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公开(公告)号：US20190025669A1
公开(公告)日：2019-01-24
申请号：US16132139
申请日：2018-09-14
摘要： An optical logic device includes a distributed feedback laser configured to generate a first signal corresponding to distributed feedback laser output signal, the first signal being at a first wavelength. The device further includes a bandpass filter having a center frequency corresponding to the first wavelength. Additionally, the device can include an optical circulator having a first port coupled to a logic device input signal, a second port coupled to the first signal, and a third port coupled to the bandpass filter, wherein when the logic device input signal has a power above a predetermined threshold and there is a wavelength difference between the first wavelength and an input wavelength of the logic device input signal, a suppression of the first signal occurs.
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公开(公告)号：US20180267245A1
公开(公告)日：2018-09-20
申请号：US15898758
申请日：2018-02-19
申请人： FUJITSU LIMITED
发明人： Hirotomo Izumi
CPC分类号： G02B6/2746 , G02B6/12004 , G02B6/122 , G02B6/126 , G02B2006/12147 , G02B2006/1215 , G02B2006/12152 , G02B2006/12157 , G02F1/035 , G02F1/0955
摘要： An apparatus includes a first coupler configured to input input light through an input waveguide and branch the input light into first and second branch waveguides; a second coupler configured to combine the first and second branch waveguides and to output the output light through an output waveguide; a phase adjuster having a birefringent property, provided to the second branch waveguide; and a polarization converter having a birefringent property, provided to the output waveguide and configured to, when reflected light corresponding to the output light is input to the output waveguide, convert a polarization state of the reflected light such that a first part of the reflected light for traveling through the first path and a second part of the reflected light for traveling through the second path are in antiphase at the input waveguide.
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公开(公告)号：US09891453B2
公开(公告)日：2018-02-13
申请号：US15133323
申请日：2016-04-20
发明人： Kyong Hon Kim , YuDeuk Kim , Dong Wook Kim , Moon Hyeok Lee
CPC分类号： G02F1/0955 , G02B6/126 , G02B6/2766 , G02F1/0136
摘要： The present invention describes a planar waveguide-type integrated non-reciprocal polarization rotator. According to an embodiment of the present invention, the planar waveguide-type non-reciprocal 90° polarization rotator includes optical waveguide-type input and output ports, a reciprocal 45° polarization rotator based on an asymmetric optical waveguide structure, a non-reciprocal 45° polarization rotator based on an optical waveguide with a clad layer of magneto-optic material, and a phase compensator placed between the above reciprocal 45° polarization rotator and non-reciprocal 45° polarization rotator compensating the phase difference between two polarization modes.
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公开(公告)号：US20180031873A1
公开(公告)日：2018-02-01
申请号：US15221436
申请日：2016-07-27
申请人： Intel Corporation
发明人： Woosung Kim , Haisheng Rong , John Heck
CPC分类号： G02F1/0955 , G02B6/2746 , G02F1/092
摘要： Embodiments herein relate to a photonic integrated circuit (PIC) with an on-chip optical isolator. The PIC may comprise a laser, a waveguide coupled with the laser, and a closed loop resonator coupled to the laser through the waveguide. A magneto-optical (MO) layer is over and in contact with the waveguide and the closed loop resonator. The closed loop resonator may comprise a first polarization rotator (PR) and a second PR. A light from the laser in transverse electric (TE) mode through the waveguide is rotated in the first PR to a light in transverse magnetic (TM) mode, and the light in TM mode is rotated in the second PR to light in TE mode. The isolator may further comprise a micro-heater over or along a side of the waveguide and separated from the closed loop resonator; and a feedback control loop connected to the closed loop resonator and the micro-heater.
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公开(公告)号：US20170261773A1
公开(公告)日：2017-09-14
申请号：US15605560
申请日：2017-05-25
申请人： Beijing Qi-Red PhotoElectric Technology Co., Ltd. , Zibo Qi-Red PhotoElectric Technology Co.,Ltd.
发明人： Shudong Wu , Wenbo Wang
CPC分类号： G02B6/2786 , G02B6/2766 , G02F1/0136 , G02F1/095
摘要： A polarization scrambler based on Faraday magneto-optic effect is disclosed. A polarization control unit (2) is connected between a first rotator unit (1) and a second rotator unit (3). The first rotator unit (1) includes a first optical fiber circle (11) and a first wire coil (12). The second rotator unit (3) includes a second optical fiber circle (31) and a second wire coil (32). ACs with two frequencies f1 and f2 are respectively introduced into the first wire coil (12) and the second wire coil (32), such that the ACs in the two wire coils are changed to control the polarization angle in the two optical fiber circles to independently change within the range of +/−90°. The polarization control unit (2) can ensure motion trajectories of outputted light polarization pointsare in two orthogonal directions, thus achieving uniform polarization disturbance.
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