Patents by Inventor Daoyi Wang
Daoyi Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230305243Abstract: A system for passive alignment of fibers to an interface of a photonic integrated circuit (PIC) includes an input frame, an actuator, and an output frame. The actuator arranged to apply force along a force axis to the input frame. The output frame including a tip for picking up a plate and transferring the force thereto, the output frame being connected to the input frame such that the output frame may tilt relative to the input frame and the output frame is elastically biased relative to the input frame into a position wherein the tip is aligned on the force axis.Type: ApplicationFiled: May 30, 2023Publication date: September 28, 2023Inventors: Daoyi Wang, Ryohei Urata, Lieven Verslegers, Jan Petykiewicz
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Patent number: 11693197Abstract: A system for passive alignment of fibers to an interface of a photonic integrated circuit (PIC) includes an input frame, an actuator, and an output frame. The actuator arranged to apply force along a force axis to the input frame. The output frame including a tip for picking up a plate and transferring the force thereto, the output frame being connected to the input frame such that the output frame may tilt relative to the input frame and the output frame is elastically biased relative to the input frame into a position wherein the tip is aligned on the force axis.Type: GrantFiled: June 25, 2021Date of Patent: July 4, 2023Assignee: Google LLCInventors: Daoyi Wang, Ryohei Urata, Lieven Verslegers, Jan Petykiewicz
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Publication number: 20220413234Abstract: A system for passive alignment of fibers to an interface of a photonic integrated circuit (PIC) includes an input frame, an actuator, and an output frame. The actuator arranged to apply force along a force axis to the input frame. The output frame including a tip for picking up a plate and transferring the force thereto, the output frame being connected to the input frame such that the output frame may tilt relative to the input frame and the output frame is elastically biased relative to the input frame into a position wherein the tip is aligned on the force axis.Type: ApplicationFiled: June 25, 2021Publication date: December 29, 2022Inventors: Daoyi Wang, Ryohei Urata, Lieven Verslegers, Jan Petykiewicz
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Patent number: 11442094Abstract: This application provides a polygonal spherical sampling device, belonging to the technical field of spherical field antenna measurement, and including a probe, a mounting rack and a supporting platform. The supporting platform is mounted on the mounting rack for placing an object to be tested. The number of the probes is more than or equal to six, the probes are mounted on the mounting rack and a plurality of the probes are distributed on at least two vertical planes in a three-dimensional spherical space and are arranged around the supporting platform. The vertical planes are arranged symmetrically about a vertical axis, the probes are uniformly distributed at intervals of A degrees on each vertical plane, the probes on a same horizontal plane are uniformly distributed at intervals of B degrees, both A and B are less than or equal to 90.Type: GrantFiled: June 1, 2021Date of Patent: September 13, 2022Assignee: Shenzhen Xinyi Technology Co., Ltd.Inventors: Linbin Chen, Zhenkun Xie, Daoyi Wang, Cien Sun, Kaixuan Jiang
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Publication number: 20220187355Abstract: This application provides a polygonal spherical sampling device, belonging to the technical field of spherical field antenna measurement, and including a probe, a mounting rack and a supporting platform. The supporting platform is mounted on the mounting rack for placing an object to be tested. The number of the probes is more than or equal to six, the probes are mounted on the mounting rack and a plurality of the probes are distributed on at least two vertical planes in a three-dimensional spherical space and are arranged around the supporting platform. The vertical planes are arranged symmetrically about a vertical axis, the probes are uniformly distributed at intervals of A degrees on each vertical plane, the probes on a same horizontal plane are uniformly distributed at intervals of B degrees, both A and B are less than or equal to 90.Type: ApplicationFiled: June 1, 2021Publication date: June 16, 2022Applicant: Shenzhen Xinyi Technology Co., Ltd.Inventors: Linbin CHEN, Zhenkun XIE, Daoyi WANG, Cien SUN, Kaixuan JIANG
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Patent number: 11340468Abstract: A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.Type: GrantFiled: August 5, 2020Date of Patent: May 24, 2022Assignee: Google LLCInventors: Ryohei Urata, Lieven Verslegers, Hong Liu, Daoyi Wang
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Publication number: 20200363646Abstract: A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.Type: ApplicationFiled: August 5, 2020Publication date: November 19, 2020Inventors: Ryohei Urata, Lieven Verslegers, Hong Liu, Daoyi Wang
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Patent number: 10788632Abstract: A photonic integrated circuit for coupling a laser from an optical assembly to a grating coupler is disclosed. A method for coupling a laser to a photonic integrated circuit is disclosed. The optical assembly includes an optical system disposed on a v-groove bench. The optical system typically includes a laser source, a coupling lens or lens system, an optional isolator, a beam redirector that includes a prism or other light turning element and a cylindrical tube mounted on the v-groove bench. The method of tuning the angle of incidence from the optical assembly to the grating coupler is also disclosed.Type: GrantFiled: January 29, 2019Date of Patent: September 29, 2020Assignee: Google LLCInventors: Daoyi Wang, Lieven Verslegers, Ryohei Urata
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Patent number: 10775637Abstract: A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.Type: GrantFiled: May 9, 2018Date of Patent: September 15, 2020Assignee: Google LLCInventors: Ryohei Urata, Lieven Verslegers, Hong Liu, Daoyi Wang
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Publication number: 20200241222Abstract: A photonic integrated circuit for coupling a laser from an optical assembly to a grating coupler is disclosed. A method for coupling a laser to a photonic integrated circuit is disclosed. The optical assembly includes an optical system disposed on a v-groove bench. The optical system typically includes a laser source, a coupling lens or lens system, an optional isolator, a beam redirector that includes a prism or other light turning element and a cylindrical tube mounted on the v-groove bench. The method of tuning the angle of incidence from the optical assembly to the grating coupler is also disclosed.Type: ApplicationFiled: January 29, 2019Publication date: July 30, 2020Inventors: Daoyi Wang, Lieven Verslegers, Ryohei Urata
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Publication number: 20190393958Abstract: A remote node includes a first node input, a second node input, and an optical switch. The optical switch includes a first switch input optically coupled to the first node input, a second switch input optically coupled to the second node input, a first switch output switchably coupled to the first switch input or the second switch input, and a second switch output switchably coupled to the first switch input or the second switch input. The remote node includes a photodiode optically coupled to the second switch output, and a capacitor electrically coupled to the photodiode and the optical switch. When the first switch input is switchably coupled to the first switch output, the second switch input is switchably coupled to the second switch output. Light received by the second switch input passes out the second switch output to the photodiode. The photodiode charges the capacitor to a threshold charge.Type: ApplicationFiled: August 28, 2019Publication date: December 26, 2019Applicant: Google LLCInventors: Liang Du, Yut Loy Chan, Xiangjun Zhao, Changhong Joy Jiang, Cedric Fung Lam, Daoyi Wang, Tao Zhang
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Patent number: 10516479Abstract: A remote node includes a first node input, a second node input, and an optical switch. The optical switch includes a first switch input optically coupled to the first node input, a second switch input optically coupled to the second node input, a first switch output switchably coupled to the first switch input or the second switch input, and a second switch output switchably coupled to the first switch input or the second switch input. The remote node includes a photodiode optically coupled to the second switch output, and a capacitor electrically coupled to the photodiode and the optical switch. When the first switch input is switchably coupled to the first switch output, the second switch input is switchably coupled to the second switch output. Light received by the second switch input passes out the second switch output to the photodiode. The photodiode charges the capacitor to a threshold charge.Type: GrantFiled: August 28, 2019Date of Patent: December 24, 2019Assignee: Google LLCInventors: Liang Du, Yut Loy Chan, Xiangjun Zhao, Changhong Joy Jiang, Cedric Fung Lam, Daoyi Wang, Tao Zhang
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Patent number: 10439722Abstract: A carrier office includes an optical line terminal, a first transmit-erbium-doped fiber amplifier (EDFA), and a second transmit-EDFA. The OLT is configured to transmit first and second optical signals. The first transmit-EDFA is optically coupled to the OLT and a first feeder fiber, and the first feeder fiber is optically coupled to a first remote node (RN). The first transmit-EDFA is operable between a respective enabled state and a respective disabled state. The second transmit-EDFA is optically coupled to the OLT and a second feeder fiber, and the second feeder fiber is optically coupled to a second RN. The second transmit-EDFA is operable between a respective enabled state and a respective disabled state.Type: GrantFiled: July 17, 2018Date of Patent: October 8, 2019Assignee: Google LLCInventors: Liang Du, Yut Loy Chan, Xiangjun Zhao, Changhong Joy Jiang, Cedric Fung Lam, Daoyi Wang, Tao Zhang
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Publication number: 20190171029Abstract: A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.Type: ApplicationFiled: May 9, 2018Publication date: June 6, 2019Inventors: Ryohei Urata, Lieven Verslegers, Hong Liu, Daoyi Wang
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Patent number: 10171199Abstract: A system includes a multiplexer having a pass-band and an optical network unit (ONU) optically coupled to the multiplexer. The ONU includes a tunable laser configured to continuously transmit an optical signal to the multiplexer in a burst-on state and a burst-off state. While in the burst-on state, the ONU is configured to tune the tunable laser to transmit the optical signal at a transmit wavelength within the wavelength pass-band of the multiplexer. The multiplexer configured to allow passage therethrough of the optical signal at the transmit wavelength. While in the burst-off state, the ONU is configured to tune the tunable laser to transmit the optical signal at a non-transmit wavelength outside of the wavelength pass-band of the multiplexer. The multiplexer configured to block passage therethrough of the optical signal at the non-transmit wavelength.Type: GrantFiled: December 20, 2016Date of Patent: January 1, 2019Assignee: Google LLCInventors: Xiangjun Zhao, Daoyi Wang, Liang Du, Changhong Joy Jiang, Cedric Fung Lam
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Patent number: 10158930Abstract: The communication system has first and second optical systems and an optical feed fiber in communication with the first optical system and arranged to convey a feeder optical signal to the second optical system. The first optical system includes a multiplexer configured to multiplex/demultiplex between a first optical line terminal signal, a second optical line terminal signal, and the feeder optical signal. The feeder optical signal includes the first optical line terminal signal and the second optical line terminal signal. The first optical line terminal signal includes a first upstream free spectral range and a first downstream free spectral range. The second optical line terminal signal includes a second upstream free spectral range and a second downstream free spectral range. The second optical system is in communication with the optical feed fiber and is configured to multiplex and demultiplex between the feeder optical signal and optical network unit signals.Type: GrantFiled: June 29, 2017Date of Patent: December 18, 2018Assignee: Google LLCInventors: Liang Du, Xiangjun Zhao, Cedric Fung Lam, Daoyi Wang, Changhong Joy Jiang
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Publication number: 20180323875Abstract: A carrier office includes an optical line terminal, a first transmit-erbium-doped fiber amplifier (EDFA), and a second transmit-EDFA. The OLT is configured to transmit first and second optical signals. The first transmit-EDFA is optically coupled to the OLT and a first feeder fiber, and the first feeder fiber is optically coupled to a first remote node (RN). The first transmit-EDFA is operable between a respective enabled state and a respective disabled state. The second transmit-EDFA is optically coupled to the OLT and a second feeder fiber, and the second feeder fiber is optically coupled to a second RN. The second transmit-EDFA is operable between a respective enabled state and a respective disabled state.Type: ApplicationFiled: July 17, 2018Publication date: November 8, 2018Applicant: Google LLCInventors: Liang Du, Yut Loy Chan, Xiangjun Zhao, Changhong Joy Jiang, Cedric Fung Lam, Daoyi Wang, Tao Zhang
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Patent number: 10063944Abstract: A remote node includes a first node input, a second node input, and an optical switch. The optical switch includes a first switch input optically coupled to the first node input, a second switch input optically coupled to the second node input, a first switch output switchably coupled to the first switch input or the second switch input, and a second switch output switchably coupled to the first switch input or the second switch input. The remote node includes a photodiode optically coupled to the second switch output, and a capacitor electrically coupled to the photodiode and the optical switch. When the first switch input is switchably coupled to the first switch output, the second switch input is switchably coupled to the second switch output. Light received by the second switch input passes out the second switch output to the photodiode. The photodiode charges the capacitor to a threshold charge.Type: GrantFiled: December 20, 2016Date of Patent: August 28, 2018Assignee: Google LLCInventors: Liang Du, Yut Loy Chan, Xiangjun Zhao, Changhong Joy Jiang, Cedric Fung Lam, Daoyi Wang, Tao Zhang
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Patent number: 10050708Abstract: A carrier office includes an optical line terminal, a first transmit-erbium-doped fiber amplifier (EDFA), and a second transmit-EDFA. The OLT is configured to transmit first and second optical signals. The first transmit-EDFA is optically coupled to the OLT and a first feeder fiber, and the first feeder fiber is optically coupled to a first remote node (RN). The first transmit-EDFA is operable between a respective enabled state and a respective disabled state. The second transmit-EDFA is optically coupled to the OLT and a second feeder fiber, and the second feeder fiber is optically coupled to a second RN. The second transmit-EDFA is operable between a respective enabled state and a respective disabled state.Type: GrantFiled: December 20, 2016Date of Patent: August 14, 2018Assignee: Google LLCInventors: Liang Du, Yut Loy Chan, Xiangjun Zhao, Changhong Joy Jiang, Cedric Fung Lam, Daoyi Wang, Tao Zhang
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Publication number: 20180175964Abstract: A system includes a multiplexer having a pass-band and an optical network unit (ONU) optically coupled to the multiplexer. The ONU includes a tunable laser configured to continuously transmit an optical signal to the multiplexer in a burst-on state and a burst-off state. While in the burst-on state, the ONU is configured to tune the tunable laser to transmit the optical signal at a transmit wavelength within the wavelength pass-band of the multiplexer. The multiplexer configured to allow passage therethrough of the optical signal at the transmit wavelength. While in the burst-off state, the ONU is configured to tune the tunable laser to transmit the optical signal at a non-transmit wavelength outside of the wavelength pass-band of the multiplexer. The multiplexer configured to block passage therethrough of the optical signal at the non-transmit wavelength.Type: ApplicationFiled: December 20, 2016Publication date: June 21, 2018Applicant: Google Inc.Inventors: Xiangjun Zhao, Daoyi Wang, Liang Du, Changhong Joy Jiang, Cedric Fung Lam