Tailor distributed amplification for fiber sensing

US10451448B2 · kind B2 · utility

Assignee

• PRISMA PHOTONICS LTD · IL

Inventors

• Eitan Rowen · Holon, IL
• Eran Inbar · Nes Ziona, IL

Key dates

• Filing date: Sep 28, 2018
• Grant date: Oct 22, 2019
• Expiry date: Sep 28, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B10/2916
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of providing in-line Raman amplification in an optical fiber sensing system, including the procedures of generating a probe light having a probe wavelength, transmitting the probe light into an optical fiber, generating at least one Raman pump light at a respective pump wavelength, the pump wavelength being shorter than the probe wavelength, generating at least one Raman seed light at a respective seed wavelength, the seed wavelength being between the pump and probe wavelengths, transmitting the Raman pump light into the optical fiber, transmitting the Raman seed light into the optical fiber and propagating the Raman pump light, the Raman seed light and the probe light along the optical fiber to achieve distributed Raman amplification of signal light produced by the probe light as it propagates along the optical fiber.