公开(公告)号：US20200173780A1

公开(公告)日：2020-06-04

申请号：US16638082

申请日：2018-08-16

Applicant: Agency for Science, Technology and Research

Inventor： Guoqiang Wu ,  Jifang Tao ,  Alex Yuandong Gu ,  Geng Li Chua

IPC: G01C19/5698

Abstract: Various embodiments may provide a gyroscope. The gyroscope may include a piezoelectric substrate, an excitation transducer configured to generate a surface acoustic wave, and a sensing transducer configured to receive the surface acoustic wave generated by the excitation transducer. The gyroscope may additionally include a mass dot array between the excitation transducer and the sensing transducer, the mass dot array configured to generate a stress on the piezoelectric substrate based on a rotation of said gyroscope upon the surface acoustic wave passing through the mass dot array. The gyroscope may also include a light source, and an optical detector configured to receive one or more light beams generated by the light source to determine the rotation of the gyroscope based on a property of the one or more light beams. The property of the one or more light beams may be variable based on the stress on the piezoelectric substrate.

公开(公告)号：US20190049249A1

公开(公告)日：2019-02-14

申请号：US16076563

申请日：2017-01-24

Applicant: Agency for Science, Technology and Research

Inventor： Guoqiang Wu ,  Jifang Tao ,  Alex Yuandong Gu ,  Junfeng Song

IPC: G01C19/72 ,  G02B6/12

CPC classification number: G01C19/727 ,  G02B6/12007

Abstract: Various embodiments may provide an optical gyroscope. The optical gyroscope may include a ring resonator, an input source configured to generate or provide a first light beam and a second light beam to the ring resonator, and a switching pathway having an input end and an output end coupled to the ring resonator, and may include a plurality of switches. The optical gyroscope may include a control circuit configured to control the plurality of switches to allow the first light beam to propagate from the input end to the output end along the switching pathway during a first time interval, and allow the second light beam to propagate from the input end to the output end along the switching pathway during a second time interval. The optical gyroscope may additionally include a detector loop configured to receive the first light beam and the second light beam from the ring resonator.

公开(公告)号：US20190033075A1

公开(公告)日：2019-01-31

申请号：US16073165

申请日：2017-01-24

Applicant: Agency for Science, Technology and Research

Inventor： Guoqiang Wu ,  Sanchitha Nirodha Fernando ,  Alex Yuandong Gu ,  Geng Li Chua

IPC: G01C19/5762

Abstract: According to various embodiments, there is provided a gyroscope device including: an outer frame; and four cells arranged within the outer frame, each cell of the four cells including: a proof mass arranged at least substantially in a centre region of the cell; and four electrode frames, each electrode frame of the four electrode frames arranged at a corner region of the cell and coupled to a respective side of the proof mass.

公开(公告)号：US10578438B2

公开(公告)日：2020-03-03

申请号：US16076563

申请日：2017-01-24

Applicant: Agency for Science, Technology and Research

Inventor： Guoqiang Wu ,  Jifang Tao ,  Alex Yuandong Gu ,  Junfeng Song

IPC: G01C19/72 ,  G02B6/12

Abstract: Various embodiments may provide an optical gyroscope. The optical gyroscope may include a ring resonator, an input source configured to generate or provide a first light beam and a second light beam to the ring resonator, and a switching pathway having an input end and an output end coupled to the ring resonator, and may include a plurality of switches. The optical gyroscope may include a control circuit configured to control the plurality of switches to allow the first light beam to propagate from the input end to the output end along the switching pathway during a first time interval, and allow the second light beam to propagate from the input end to the output end along the switching pathway during a second time interval. The optical gyroscope may additionally include a detector loop configured to receive the first light beam and the second light beam from the ring resonator.

公开(公告)号：US10151638B2

公开(公告)日：2018-12-11

申请号：US15761082

申请日：2016-08-12

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Jifang Tao ,  Hong Cai ,  Yuandong Alex Gu ,  Guoqiang Wu

IPC: G01J5/08 ,  G01J5/20

Abstract: Various aspects of this disclosure provide a bolometer including a substrate and a ring resonator structure over the substrate. The bolometer may also include a silicon oxide layer in thermal contact with the ring resonator structure. The bolometer may further include a first waveguide over the substrate and coupled to the ring resonator structure, the first waveguide configured to couple an infrared light to the ring resonator structure so that the infrared light generates a temperature increase in the silicon oxide layer. The bolometer may additionally include a second waveguide over the substrate and coupled to the ring resonator structure, the second waveguide configured to couple a probe light input to the ring resonator structure so that a probe light output is generated from the probe light input, the probe light output having a change in a characteristic from the probe light input based on the temperature increase.