We introduce the Raman amplification to increase the sensing range in the Brillouin optical correlation domain analysis (BOCDA). Compared to our previous report, the optimized Raman pumping scheme is numerically simulated and enhanced sensing length is experimentally demonstrated. The differential measurement method and time-domain data processing are further introduced in the backward distributed Raman pumped BOCDA system for the performance improvement. Strain changes of 1 mϵ over 7 cm have been measured at 52 km sensing fiber.
|Title of host publication||Optical Fiber Sensors, OFS 2020|
|Publisher||Optica Publishing Group (formerly OSA)|
|Publication status||Published - 2020|
|Event||27th International Conference on Optical Fiber Sensors, OFS 2020 - Washington, United States|
Duration: 2020 Jun 8 → 2020 Jun 12
|Name||Optics InfoBase Conference Papers|
|Conference||27th International Conference on Optical Fiber Sensors, OFS 2020|
|Period||20/6/8 → 20/6/12|
Bibliographical notePublisher Copyright:
© 2021 The Author(s).
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Mechanics of Materials