公开(公告)号：US20230314605A1

公开(公告)日：2023-10-05

申请号：US18191949

申请日：2023-03-29

Applicant: California Institute of Technology

Inventor： Luis Costa ,  Alireza Marandi ,  Zhongwen Zhan

IPC: G01S17/02 ,  G01S17/89 ,  G01S7/481

CPC classification number: G01S17/02 ,  G01S17/89 ,  G01S7/4818

Abstract: A sensor system including an optical fiber comprising a first spatial channel and a second spatial channel, wherein the spatial channels are coupled and electromagnetic radiation propagates with different group velocities in each of the spatial channels. The sensor system further includes a source inputting the electromagnetic radiation into the first spatial channel at an input; and a detection system coupled to an output of the fiber, the detection system including a detector detecting transmission of the electromagnetic radiation coupled into the second spatial channel at different positions along the fiber between the input to the output, and generating a signal in response thereto; and a computer processing the signal to obtain a localized measurement of a physical parameter at one or more of the different positions along the fiber.