Patent ID: 11920963
Assignee: ARIEL SCIENTIFIC INNOVATIONS LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of optical sensing, comprising:
coupling an excitation optical signal into a first optical fiber to induce Rayleigh backscattering, thereby providing a backscattered signal;
optically amplifying said backscattered signal in said first optical fiber, by introducing a first pump light beam into said first fiber, thereby providing an amplified backscattered signal;
coupling said amplified backscattered signal into a second optical fiber, spatially separated from said first optical fiber; and
optically re-amplifying said amplified backscattered signal in said second optical fiber, by introducing a second pump light beam into said second fiber, thereby generating a sensing signal characterized by an enhanced signal-to-noise ratio over an entire length of said first fiber.