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1. 发明申请

US20190222309A1 SYSTEM AND A METHOD FOR DETECTING THE INSTALLATION OF AN OPTICAL TAP AND A METHOD OF SECURING AN OPTICAL SIGNAL IN AN OPTICAL FIBER 审中-公开
公开(公告)号：US20190222309A1
公开(公告)日：2019-07-18
申请号：US16324511
申请日：2017-08-09
申请人： MACQUARIE UNIVERSITY
发明人： Simon GROSS , Michael WITHFORD
IPC分类号： H04B10/07 , H04B10/073
CPC分类号： H04B10/0705 , G02B6/0288 , G02B6/125 , G02B6/14 , G02B6/2821 , G02B2006/1209 , G02B2006/12152 , G02B2006/12164 , H04B10/073 , H04B10/077 , H04B10/85
摘要： A system for detecting the installation of an optical tap on an optical fiber link. The system comprises a spatial mode de-multiplexer optically coupled to the optical fiber link. The spatial mode de-multiplexer is configured to isolate an optical signal in a first spatial mode of the optical fiber link. The spatial mode de-multiplexer is configured to isolate light in a second spatial mode of the optical fiber link 14. The system comprises an optical sensor optically coupled to the spatial mode de-multiplexer for measuring the optical power of the light in the second spatial mode of the optical fiber link. Also disclosed herein are methods for detecting installation of an optical tap and methods for securing an optical signal in an optical fiber.

2. 发明申请

US20190196205A1 GRATING WAVEGUIDE COMBINER FOR OPTICAL ENGINE 审中-公开
公开(公告)号：US20190196205A1
公开(公告)日：2019-06-27
申请号：US16231326
申请日：2018-12-21
申请人： NORTH INC.
发明人： Jörg Pierer , Rony Jose James , Stefan Mohrdiek , Martin Joseph Kiik , Syed Moez Haque , Douglas Raymond Dykaar
IPC分类号： G02B27/01 , H01S5/40 , H01S5/022 , G02B6/12 , G02B6/124
CPC分类号： G02B27/0176 , G02B6/12004 , G02B6/124 , G02B27/0172 , G02B2006/12107 , G02B2006/12164 , G02B2027/0116 , G02B2027/015 , G02B2027/0178 , H01S5/02272 , H01S5/02288 , H01S5/02292 , H01S5/4093
摘要： Systems, devices, and methods of manufacturing optical engines and laser projectors that are well-suited for use in wearable heads-up displays (WHUDs) are described. Generally, the optical engines of the present disclosure integrate a plurality of laser diodes (e.g., 3 laser diodes, 4 laser diodes) within a single, hermetically or partially hermetically sealed, encapsulated package. A grating waveguide combiner comprising a plurality of waveguides having grating couplers thereon may be used to combine beams of light emitted by the plurality of laser diodes into a coaxially superimposed aggregate beam. Such optical engines may have advantages over existing designs including, for example, smaller volumes, better manufacturability, faster modulation speed, etc. WHUDs that employ such optical engines and laser projectors are also described.

3. 发明申请

US20190196200A1 DIRECTLY WRITTEN WAVEGUIDE FOR COUPLING OF LASER TO PHOTONIC INTEGRATED CIRCUIT 审中-公开
公开(公告)号：US20190196200A1
公开(公告)日：2019-06-27
申请号：US16231019
申请日：2018-12-21
申请人： NORTH INC.
发明人： Jörg Pierer , Rony Jose James , Stefan Mohrdiek , Martin Joseph Kiik , Syed Moez Haque , Douglas R. Dykaar
IPC分类号： G02B27/01 , H01S5/40 , H01S5/022 , G02B6/12 , G02B27/42 , H01S5/42 , G02B6/124
CPC分类号： G02B27/0172 , G02B6/12004 , G02B6/124 , G02B27/4205 , G02B2006/12069 , G02B2006/12107 , G02B2006/12147 , G02B2006/12164 , G02B2027/011 , G02B2027/0116 , G02B2027/0178 , H01S5/02208 , H01S5/02248 , H01S5/02272 , H01S5/02288 , H01S5/02296 , H01S5/4012 , H01S5/4031 , H01S5/4093 , H01S5/423
摘要： Systems, devices, and methods of manufacturing optical engines and laser projectors that are well-suited for use in wearable heads-up displays (WHUDs) are described. Generally, the optical engines of the present disclosure integrate a plurality of laser diodes (e.g., 3 laser diodes, 4 laser diodes) within a single, hermetically or partially hermetically sealed, encapsulated package. Photonic integrated circuits having grating or edge couplers thereon may be used to wavelength multiplex beams of light emitted by the plurality of laser diodes into a coaxially superimposed aggregate beam. A waveguide medium having one or more directly written waveguides may couple light from laser diodes to a photonic integrated circuit, and may optionally hermetically or partially hermetically seal the laser diodes, eliminating the need for a separate seal. Such optical engines may have advantages over existing designs including, for example, smaller volumes, better manufacturability, faster modulation speed, etc. WHUDs that employ such optical engines and laser projectors are also described.

4. 发明申请

US20180292606A1 METHOD AND DEVICE HAVING A SATURABLE ABSORBER FOR FILTERING 审中-公开
公开(公告)号：US20180292606A1
公开(公告)日：2018-10-11
申请号：US15834729
申请日：2017-12-07
申请人： Lijie QIAO
发明人： Lijie Qiao
IPC分类号： G02B6/12 , G02B6/293
CPC分类号： G02B6/12 , G02B6/29308 , G02B6/2931 , G02B6/29311 , G02B6/29317 , G02B2006/12109 , G02B2006/12126 , G02B2006/12164
摘要： A self-fit optical filter includes a dual fiber collimator, a diffraction grating for spatially dispersing the input light beam into a plurality of sub-beams, a cylindrical lens for focusing each of the sub-beams at a saturable absorber which becomes saturated dependent on intensity of light, and a reflector for reflecting the sub-beams back along their optical paths. A method of filtering includes: demultiplexing an input beam into a plurality of sub-beams having distinct center wavelengths, at least partially absorbing one or more of the sub-beams by using a saturable absorber while allowing other sub-beams to pass through, substantially unattenuated, and multiplexing the sub-beams into an output optical signal.

5. 发明授权

US10082623B2 Rib type optical waveguide and optical multiplexer / demultiplexer using same 有权
公开(公告)号：US10082623B2
公开(公告)日：2018-09-25
申请号：US15514563
申请日：2015-09-15
申请人： NEC Corporation
发明人： Tomoaki Kato , Shigeru Nakamura
IPC分类号： G02B6/12 , G02B6/125 , G02B6/122 , H04B10/40
CPC分类号： G02B6/12007 , G02B6/122 , G02B6/1228 , G02B6/125 , G02B6/2813 , G02B6/29344 , G02B6/2938 , G02B2006/12097 , G02B2006/12164 , H04B10/40
摘要： Provided are a practical rib type optical waveguide in which polarization dependence and wavelength dependence and the like are small and an optical multiplexer/demultiplexer using the same. An optical waveguide type optical multiplexer/demultiplexer of the present invention includes a substrate, M input optical waveguides and N output optical waveguides including a single mode rib type optical waveguide, multi-mode optical interference regions including a rib type optical waveguide, and reversible tapered regions that smoothly connect the input/output optical waveguides to the multi-mode optical interference regions and include M×N rib type optical waveguides, and both side surfaces of the multi-mode optical interference region are respectively formed in a stepped shape.

6. 发明授权

US10061086B2 Beam distributor 有权
公开(公告)号：US10061086B2
公开(公告)日：2018-08-28
申请号：US15787115
申请日：2017-10-18
申请人： FANUC CORPORATION
发明人： Takanori Sato
IPC分类号： H04B10/00 , G02B6/35 , G02B6/12
CPC分类号： G02B6/3516 , G02B6/12033 , G02B6/3504 , G02B6/4204 , G02B6/4292 , G02B2006/12164
摘要： A beam distributor includes a beam entrance and multiple beam exits. The beam distributor includes: a rotatable cylindrical member; at least two multiple reflectors shifted from each other; a rotation mechanism that rotates the multiple reflectors; a fixing mechanism that fixes the reflectors; a reflector position sensing mechanism; a light absorber; and a control unit. The control unit controls the rotation mechanism to rotationally move a rotational position about the cylindrical member to a position where a laser beam is to be reflected on the reflector toward a selected beam exits, a position where the laser beam is to pass through between adjacent reflectors to be absorbed by the light absorber, or a position where the laser beam is to be reflected on the reflector and absorbed by the light absorber. The control unit controls the fixing mechanism so as to fix rotational movements of the reflectors.

7. 发明授权

US09904018B2 Multipulse system for writing waveguides, gratings, and integrated optical circuits 有权
公开(公告)号：US09904018B2
公开(公告)日：2018-02-27
申请号：US12531566
申请日：2008-03-14
申请人： Peter R. Herman , Haibin Zhang , Shane Michael Eaton
发明人： Peter R. Herman , Haibin Zhang , Shane Michael Eaton
IPC分类号： G02B6/34 , G02B6/13 , G02B6/124 , G02B6/12 , G02B5/18 , G02B6/02
CPC分类号： G02B6/34 , G02B5/1857 , G02B6/02147 , G02B6/124 , G02B6/13 , G02B2006/12164 , G02B2006/12171
摘要： The present invention provides a direct laser writing fabrication method and system for devices having periodic refractive index modulation structures, for example, Bragg gratings. By focusing a modulated pulsed laser beam into a transparent material substrate, a path of laser modified volumes can be formed with modified refractive index compared with the unprocessed material. Modulation of exposure conditions provides periodic or modified periodic waveguide structures such that the waveguide structures exhibit grating responses and can be used for a variety of optical applications, for example, as spectral filters, Bragg reflectors, grating couplers, grating sensors, or other devices. The method enables direct one-step fabrication and integration of periodic or modified periodic refractive-index modulation devices together with other optical waveguiding devices to enable low-cost, multifunctional one-dimensional, two-dimensional or three-dimensional optical circuit fabrication of simple and complex optical systems.

8. 发明申请

US20170269303A1 Optical Devices And Methods For Fabricating An Optical Device 有权
公开(公告)号：US20170269303A1
公开(公告)日：2017-09-21
申请号：US15461647
申请日：2017-03-17
申请人： Singapore University Of Technology And Design
发明人： Dawn Tan
IPC分类号： G02B6/26 , G02B6/125
CPC分类号： G02B6/26 , G02B6/12016 , G02B6/12021 , G02B6/125 , G02B6/13 , G02B2006/1209 , G02B2006/12107 , G02B2006/12109 , G02B2006/12164
摘要： According to various embodiments, there is provided an optical device including: a waveguide configured to propagate an electromagnetic wave, the waveguide including a first grating and further including a second grating; a first further waveguide including a first further grating, the first further waveguide having a first width, wherein the first further grating is coupled to the first grating to form a first pair of coupled gratings, wherein a grating period of the first further grating is at least substantially equal to a grating period of the first grating; a second further waveguide including a second further grating, the second further waveguide having a second width, wherein the second further grating is coupled to the second grating to form a second pair of coupled gratings, wherein a grating period of the second further grating is at least substantially equal to a grating period of the second grating.

9. 发明申请

US20170026131A1 EXTERNAL CAVITY LASER BASED WAVELENGTH DIVISION MULTIPLEXING SUPERCHANNEL TRANSCEIVERS 有权
标题翻译：基于外部激光激光器的波长分割多路复用超级信道收发器
公开(公告)号：US20170026131A1
公开(公告)日：2017-01-26
申请号：US15285123
申请日：2016-10-04
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Jason S. Orcutt
IPC分类号： H04B10/50 , H04B10/516 , H04B10/80 , H04J14/06 , H01S5/323 , G02B6/27 , H01S5/062 , H01S5/14 , G02B6/126 , G02B6/12 , G02B6/293 , H04J14/02 , H01S5/10
CPC分类号： H04B10/503 , G02B6/00 , G02B6/12004 , G02B6/126 , G02B6/2773 , G02B6/29382 , G02B2006/12164 , H01S3/2391 , H01S5/021 , H01S5/0287 , H01S5/041 , H01S5/06246 , H01S5/06821 , H01S5/0687 , H01S5/1028 , H01S5/14 , H01S5/141 , H01S5/142 , H01S5/146 , H01S5/3013 , H01S5/323 , H01S5/4031 , H01S2301/163 , H04B10/5053 , H04B10/506 , H04B10/516 , H04B10/801 , H04J14/02 , H04J14/06
摘要： A technique relates to a superchannel. Laser cavities include a first laser cavity, a next laser cavity, through a last laser cavity. Modulators include a first modulator, a next modulator, through a last modulator, each having a direct input, an add port, and an output. A concatenated arrangement of the laser cavities is configured to form the superchannel, which includes the last laser cavity coupled to the direct input of the last modulator, and the output of the last modulator coupled to the add port of the next modulator. The arrangement includes the next laser cavity coupled to direct input of the next modulator, and the output of the next modulator coupled to add port of first modulator, along with the first laser cavity coupled to direct input of the first modulator, and the output of first modulator coupled to input of a multiplexer, thus forming the superchannel into multiplexer.
摘要翻译：一种技术涉及一种超级通道。激光腔包括通过最后激光腔的第一激光腔，下一个激光腔。调制器包括通过最后一个调制器的第一调制器，下一个调制器，每个具有直接输入，加法端口和输出。激光腔的级联布置被配置为形成超声道，其包括耦合到最后一个调制器的直接输入的最后激光腔，以及耦合到下一个调制器的加法端口的最后一个调制器的输出。该装置包括耦合到下一个调制器的直接输入的下一个激光腔，以及耦合到第一调制器的端口的下一个调制器的输出以及耦合到第一调制器的直接输入的第一激光腔和第一调制器耦合到多路复用器的输入，从而将超声道形成多路复用器。

10. 发明授权

US09547127B1 Broadband silicon nitride polarization beam splitter 有权
标题翻译：宽带氮化硅偏振光束分离器
公开(公告)号：US09547127B1
公开(公告)日：2017-01-17
申请号：US15153658
申请日：2016-05-12
申请人： INPHI CORPORATION
发明人： Jie Lin , Masaki Kato
IPC分类号： G02B6/126 , G02B6/27 , G02B6/28 , G02B6/12
CPC分类号： G02B6/126 , G02B6/2773 , G02B6/2804 , G02B2006/12035 , G02B2006/12116 , G02B2006/12147 , G02B2006/1215 , G02B2006/12164
摘要： A compact polarization beam splitter is formed by cascading two stages of directional couplers each containing two waveguides laid in parallel with a coupling gap. Each waveguide is made by silicon nitride material having a minimum length configured to be comparable with a coupling length for a TE polarization mode being set as twice of a coupling length for a TM polarization mode. A first-stage direction coupler is optimized by making the coupling gap smaller/greater than a nominal value to maximize TE/TM extinction ratio at least for a shorter/longer wavelength window of a designated wavelength band and each of two second-stage directional couplers is optimized by making the coupling gap greater/smaller than the nominal value to maximize TE/TM extinction ratio at least for a complementary longer/shorter wavelength window of the same designated wavelength band.
摘要翻译：紧凑的偏振分束器通过级联两级定向耦合器形成，每个定向耦合器包含与耦合间隙平行放置的两个波导。每个波导由氮化硅材料制成，其最小长度被配置为与用于TM偏振模式的TE偏振模式的耦合长度的两倍的耦合长度相当。通过使耦合间隙小于/大于标称值来优化第一级方向耦合器，以使至少对于指定波长带的较短/较长波长窗口以及两个第二级定向耦合器中的每一个的TE / TM消光比最大化通过使耦合间隙大于/小于标称值来优化，以使至少对于相同指定波长带的互补较长/较短波长窗口最大化TE / TM消光比。

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