公开(公告)号：US20190288475A1

公开(公告)日：2019-09-19

申请号：US16427347

申请日：2019-05-31

Applicant: University of Electronic Science and Technology of China

Inventor： Yunjiang Rao ,  Kang Li ,  Bing Han ,  Yun Fu ,  Zengling Ran

IPC: H01S3/067 ,  H01S3/094 ,  G01H9/00 ,  G01D5/353

Abstract: A long-distance FODAS amplification system includes a distributed amplification unit, which includes a LEAF, a pump, and a WDM; wherein the pump light passes through the WDM into the LEAF, so as to realize distributed amplification. A long-distance FODAS amplification method includes steps of: 1) modulating and amplifying a light source to obtain the probe pulse light; 2) guiding the pump light and the probe pulse light into LEAF; 3) combining the probe pulse light with the pump light to perform distributed amplification, so as to generate power-raised Rayleigh backscattered light; and 4) converting and demodulating the Rayleigh backscattered light after being output through the circulator, so as to complete distributed sensing.

公开(公告)号：US10985520B2

公开(公告)日：2021-04-20

申请号：US16427347

申请日：2019-05-31

Applicant: University of Electronic Science and Technology of China

Inventor： Yunjiang Rao ,  Kang Li ,  Bing Han ,  Yun Fu ,  Zengling Ran

IPC: H01S3/067 ,  G01H9/00 ,  G01D5/353 ,  H01S3/094

Abstract: A long-distance FODAS amplification system includes a distributed amplification unit, which includes a LEAF, a pump, and a WDM; wherein the pump light passes through the WDM into the LEAF, so as to realize distributed amplification. A long-distance FODAS amplification method includes steps of: 1) modulating and amplifying a light source to obtain the probe pulse light; 2) guiding the pump light and the probe pulse light into LEAF; 3) combining the probe pulse light with the pump light to perform distributed amplification, so as to generate power-raised Rayleigh backscattered light; and 4) converting and demodulating the Rayleigh backscattered light after being output through the circulator, so as to complete distributed sensing.