Dual-laser Brillouin optical correlation-domain reflectometry
We develop a new configuration for Brillouin optical correlation-domain reflectometry (BOCDR), termed dual-laser BOCDR. This method enables distributed strain and temperature measurement by sweeping the relative phase between the frequency-modulated pump and reference laser outputs. During operation...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | JPhys Photonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7647/adcddb |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | We develop a new configuration for Brillouin optical correlation-domain reflectometry (BOCDR), termed dual-laser BOCDR. This method enables distributed strain and temperature measurement by sweeping the relative phase between the frequency-modulated pump and reference laser outputs. During operation, we identify a unique 0 Hz Rayleigh noise caused by the interference between the Rayleigh scattered lights within a fiber under test (FUT). We demonstrate that this noise can be effectively suppressed by increasing the reference power while decreasing the Stokes power. Subsequently, we conduct distributed strain measurement along a 13 m-long FUT, observing Brillouin gain spectra at frequencies of as low as approximately 200 MHz. |
|---|---|
| ISSN: | 2515-7647 |