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1. 发明授权

US12111559B2 Optical switch 有权
公开(公告)号：US12111559B2
公开(公告)日：2024-10-08
申请号：US17768774
申请日：2019-10-16
申请人： Nippon Telegraph and Telephone Corporation
发明人： Yusuke Muranaka , Tatsushi Nakahara , Toshikazu Hashimoto
IPC分类号： G02F1/313 , G02B6/12 , G02F1/015
CPC分类号： G02F1/3136 , G02B6/12 , G02F1/015 , G02F1/313
摘要： An optical switch includes 2-input 2-output optical switches connected in a multistage, an optical gate provided at each of N-th optical output ports, a driving circuit for operating the 2-input 2-output optical switch, and a driving circuit for operating the optical gate. The driving circuits for operating the 2-input 2-output optical switches are integrated in the vicinity of a control electrode on a waveguide of the 2-input 2-output optical switch. The driving circuits for operating the optical gates are integrated in the vicinity of a control electrode on a waveguide of the optical gates. The waveguide of the 2-input 2-output optical switch and the waveguide of the optical gate each has a p layer, an i layer, and an n layer sequentially formed on a semi-insulating substrate. The optical switch has a trench reaching the semi-insulating substrate between the 2-input 2-output optical switch and the optical gate.

2. 发明授权

US11709373B2 Waveguide laser illuminator incorporating a despeckler 有权
公开(公告)号：US11709373B2
公开(公告)日：2023-07-25
申请号：US17659639
申请日：2022-04-18
申请人： DigiLens Inc.
发明人： Milan Momcilo Popovich , Jonathan David Waldern , Alastair John Grant
IPC分类号： G02B27/42 , G02B27/48 , G02B5/32 , F21V8/00 , G02F1/29 , G02F1/313
CPC分类号： G02B27/48 , G02B5/32 , G02B6/0016 , G02B6/0038 , G02B6/0055 , G02B6/0083 , G02B27/4261 , G02F1/292 , G02F1/3136
摘要： There is provided an illumination device comprising: a laser; a waveguide comprising at least first and second transparent lamina; a first grating device for coupling light from the laser into a TIR path in the waveguide; a second grating device for coupling light from the TIR path out of the waveguide; and a third grating device for applying a variation of at least one of beam deflection, phase retardation or polarization rotation across the wavefronts of the TIR light. The first second and third grating devices are each sandwiched by transparent lamina.

3. 发明授权

US10645474B2 Reduced crosstalk photonic switch 有权
公开(公告)号：US10645474B2
公开(公告)日：2020-05-05
申请号：US16267446
申请日：2019-02-05
申请人： Juniper Networks, Inc.
发明人： Jonathan Edgar Roth
IPC分类号： H04J14/00 , H04Q11/00 , G02B6/35 , H04B10/548 , G02F1/313
CPC分类号： H04Q11/0005 , G02B6/3546 , G02B6/3588 , G02F1/3136 , H04B10/548 , H04Q2011/0015 , H04Q2011/0049
摘要： Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.

4. 发明申请

US20180074386A1 METHOD AND APPARATUS FOR MONITORING AND CONTROLLING A PHOTONIC SWITCH USING PHASE SWEEPING 审中-公开
公开(公告)号：US20180074386A1
公开(公告)日：2018-03-15
申请号：US15261486
申请日：2016-09-09
申请人： Ray CHUNG , Zeqin LU , Hasitha JAYATILLEKA , Mohammed Wadah ALTAHA , Sudip SHEKHAR , Shahriar MIRABBASI , Lukas CHROSTOWSKI
发明人： Ray CHUNG , Zeqin LU , Hasitha JAYATILLEKA , Mohammed Wadah ALTAHA , Sudip SHEKHAR , Shahriar MIRABBASI , Lukas CHROSTOWSKI
IPC分类号： G02F1/313
CPC分类号： G02F1/0123 , G02F1/3132 , G02F1/3136 , G02F1/3137 , G02F2201/58
摘要： A method and apparatus for monitoring and feedback control of a photonic switch such as 2×2 Mach-Zehnder Interferometer switch. Optical signals at an input and an output of the switch are monitored via optical taps. A sinusoidal time-varying phase shift is applied to one of the monitoring signals. An optical combiner then combines the monitoring signals. A photodetector monitors output of the optical combiner to provide a feedback signal. The amplitude of the feedback signal due to the time-varying phase shift increases with the amount of input signal present in the output signal. When the input signal is to be routed to the output (e.g. for a bar state), a controller manipulates the switch to maximize feedback signal amplitude. When the input signal is to be routed to a different output (e.g. for a cross state), the controller manipulates the switch to minimize feedback signal amplitude.

5. 发明授权

US09852372B1 Reservoir computing device using external-feedback laser system 有权
公开(公告)号：US09852372B1
公开(公告)日：2017-12-26
申请号：US15172843
申请日：2016-06-03
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Daiju Nakano , Seiji Takeda , Toshiyuki Yamane
IPC分类号： G06N3/067 , G06N99/00 , G02F1/017 , G02F1/313 , G02B6/122 , H01S5/026 , H04Q11/00 , G02F1/015
CPC分类号： G06N3/0675 , G02B6/12004 , G02B6/1225 , G02B6/3596 , G02B6/3598 , G02B2006/12061 , G02F1/01708 , G02F1/3136 , G02F2001/0154 , G06N99/005 , H01S5/0085 , H01S5/026 , H01S5/0656 , H01S5/12 , H04Q11/0005 , H04Q2011/002 , H04Q2011/0026
摘要： Various Reservoir Computing systems and a method performed by a Reservoir Computing system are provided. A Reservoir Computing system includes a laser for emitting light. The Reservoir Computing system further includes a mirror for reflecting external feedback light back to the laser. The Reservoir Computing system also includes a modulator for modulating the external feedback light reflected back to the laser. The Reservoir Computing system additionally includes a photo-detector for converting a laser output signal to an electrical signal. The Reservoir Computing system further includes an analog-to-digital converter for sampling the electrical signal. The Reservoir Computing system also includes a controller for applying a learning algorithm to the sampled electrical signal.

6. 发明申请

US20170357140A1 Optical Interferometer Device Tolerant to Inaccuracy in Doping Overlay 有权
公开(公告)号：US20170357140A1
公开(公告)日：2017-12-14
申请号：US15179031
申请日：2016-06-10
申请人： Dominic John Goodwill , Jia Jiang
发明人： Dominic John Goodwill , Jia Jiang
IPC分类号： G02F1/225 , G02F1/313 , G02B6/293 , G02F1/025 , G02F1/21 , G02F1/015
CPC分类号： G02F1/2257 , G02B6/29346 , G02B6/29349 , G02B6/29352 , G02F1/025 , G02F1/3136 , G02F2001/0157 , G02F2001/212 , G02F2001/215
摘要： An optical interferometer device is provided including a waveguide interferometer. The waveguide interferometer includes first and second waveguide arms in a waveguide plane, each waveguide arm including a n-type region and a p-type region forming a junction. The n-type region and the p-type region of the second waveguide arm are translationally symmetric with respect to the n-type region and the p-type region, respectively, of the first waveguide arm in the waveguide plane.

7. 发明申请

US20170293200A1 Dynamic Phase Shift Compensation for Free Carrier Effect Photonic Switches 审中-公开
公开(公告)号：US20170293200A1
公开(公告)日：2017-10-12
申请号：US15096589
申请日：2016-04-12
申请人： Jia Jiang , Dominic John Goodwill , Eric Bernier
发明人： Jia Jiang , Dominic John Goodwill , Eric Bernier
IPC分类号： G02F1/313
CPC分类号： G02F1/3136 , G02F1/3138 , G02F2203/21
摘要： Monitoring output power levels of a carrier-effect based switching cell allows phase errors resulting from driving a PIN or PN junction of the switching cell to be dynamically compensated for. The compensation may also allow for compensating of phase errors resulting from the phase imbalance of input couplers as well as phase errors from the waveguide due to fabrication variations. By dynamically compensating for phase errors caused by the driving of the PIN or PN junction, the extinction ratio of the carrier-effect based switching cell can be increased.

8. 发明授权

US09638865B2 Switch device 有权
公开(公告)号：US09638865B2
公开(公告)日：2017-05-02
申请号：US15092170
申请日：2016-04-06
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Junichi Hasegawa , Kazutaka Nara
IPC分类号： G02B6/35 , H04J14/02 , H04Q11/00 , G02F1/313 , G02B6/293
CPC分类号： G02B6/3544 , G02B6/29383 , G02B6/356 , G02F1/3136 , H04J14/0219 , H04Q11/0001 , H04Q11/0005 , H04Q2011/0015
摘要： The present invention provides a switch device for an optical signal which has high extendibility and which can suppress an increase of loss in extension. A switch device in one embodiment of the present invention includes, in a housing, four splitter portions, four switch portions, and extension splitter portions. The splitter portions are connected to path-side ports, the switch portions are connected to client-side ports, and the splitter portions and the switch portions are connected to one another via shuffle fiber arrays. One ends of the extension splitter portions are connected to path-side extension ports, and the other ends thereof are connected to client-side extension ports. The number of wavelengths processable by the switch device can be easily changed by changing a connection state of optical fibers to the path-side ports, the client-side ports, the path-side extension ports, and the client-side extension ports.

9. 发明授权

US09563020B2 Inter-mode light switch 有权
标题翻译：模式间灯开关
公开(公告)号：US09563020B2
公开(公告)日：2017-02-07
申请号：US14634197
申请日：2015-02-27
申请人： Kyushu University, National University Corporation
发明人： Kiichi Hamamoto
IPC分类号： G02B6/26 , G02B6/42 , G02B6/35 , G02F1/035 , G02F1/313 , G02F1/21
CPC分类号： G02B6/354 , G02B6/12033 , G02B6/125 , G02B6/3536 , G02F1/0353 , G02F1/3133 , G02F1/3136 , G02F2001/212 , G02F2201/05
摘要： Provided is an optical mode switch that can effect a more compact optical switch. The optical mode switch (100) is provided with: a single input port (1); a single output port (2); two waveguides (10) provided in parallel between the input port (1) and the output port (2); and a refractive index altering means (8) that alters the refractive index of the waveguides. Any given mode light input to the input port (1) is output as any given mode light from the output port (2) in accordance with the refractive index altered by the refractive index altering means (8).
摘要翻译：提供了可以实现更紧凑的光学开关的光学模式开关。光模式开关（100）设置有：单个输入端口（1）; 单个输出端口（2）; 在输入端口（1）和输出端口（2）之间并联设置的两个波导（10）; 以及改变波导折射率的折射率改变装置（8）。根据由折射率改变装置（8）改变的折射率，输入到输入端口（1）的任何给定模式光作为来自输出端口（2）的任何给定模式光输出。

10. 发明申请

US20160313508A1 ANNULAR OPTICAL SHIFTER AND METHOD FOR SHIFTING OPTICAL SIGNAL 有权
标题翻译：用于移动光信号的环形光学变换器和方法
公开(公告)号：US20160313508A1
公开(公告)日：2016-10-27
申请号：US15199702
申请日：2016-06-30
申请人： Huawei Technologies Co., Ltd.
发明人： Liang SONG , Yingchun YANG , Yaoda LIU
IPC分类号： G02B6/28 , G02F1/313 , G02B6/35
CPC分类号： G02B6/2861 , G02B6/3536 , G02B6/3586 , G02F1/21 , G02F1/3133 , G02F1/3136 , G02F2201/20
摘要： An annular optical shifter and a method for controlling shift, where the annular optical shifter includes: a first bent straight-through waveguide, connecting an input end and an output end of an optical signal, and configured to transmit, to the output end, the optical signal input from the input end; multiple optical delay waveguide loops, arranged transversely and parallel on two arms of the first bent straight-through waveguide, where the multiple optical delay waveguide loops are configured to temporarily store optical signals; multiple pairs of optical switches, where each pair of optical switches are configured to control on and off of an optical path that is on the two arms of the first bent straight-through waveguide and two sides of an optical delay waveguide loop corresponding to each pair of optical switches; and a controller, configured to implement shift-up or shift-down of the optical signals.
摘要翻译：一种环形光学移位器和一种控制移位的方法，其中环形光学移位器包括：第一弯曲直通波导，连接光信号的输入端和输出端，并且被配置为向输出端发送从输入端输入的光信号; 多个光学延迟波导环路，横向并且平行地布置在第一弯曲直通波导的两个臂上，其中多个光学延迟波导环路被配置为临时存储光学信号; 多对光开关，其中每对光开关被配置为控制在第一弯曲直通波导的两个臂上的光路的开和关，以及对应于每对的光延迟波导环的两侧的光开关; 以及控制器，被配置为实现所述光信号的上移或下移。

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