BOTDR1000 · Brillouin optical time-domain reflectometer
Single-ended BOTDR for linear assets accessible from one fiber end.
BOTDR1000 Brillouin Optical Time-Domain Reflectometer
BOTDR1000 Brillouin Optical Time-Domain Reflectometer
Principle and applications
Uses spontaneous Brillouin backscattering and time-domain localization. Single-core, single-ended access measures Brillouin frequency shift and temperature or strain along the fiber. Maximum configured range is 60 km; typical acquisition time is 60–300 s/channel.
Brillouin frequency shift responds to both temperature and axial strain. Strain measurement requires temperature compensation; temperature measurement requires strain isolation or correction. One frequency-shift trace cannot independently determine both unknown quantities.
Optical sensing and transmission resist EMI and support continuous profiles, event location, fiber-fault monitoring and long-term condition management. Select the cable and complete system for the applicable hazardous-area conditions.
Range, spatial resolution, averaging time and accuracy are configuration-dependent and not necessarily achieved simultaneously. Temperature range depends on the fiber and jacket; strain requires reliable mechanical transfer into the fiber.
Technical specifications
| Item | Specification |
|---|---|
| System location error | <1 m under the specified configuration and calibration conditions |
| Fiber Type | Standard single-mode fiber |
| Fiber Configuration | Single fiber core, single-ended measurement |
| Measurement Range | 5km/20km/50km/60km |
| Measurement Channels | 1/2/4/8 Configurable as required |
| Measurement Time | 60-300 s/channel (typical) |
| Measurement Range | （-40~+100)°C/（-10000~+10000)με (-40 to +100) °C / (-10000 to +10000) με |
| Measurement Accuracy | ±1°C/±20με ±1 °C / ±20 με |
| Measurement Resolution | 0.2°C/4με 0.2 °C / 4 με |
| Sampling Interval | 0.1/0.2/0.4/0.8m Match spacing to the configured range; 0.1 m applies to the 5 km configuration |
| Spatial resolution | 1–50 m (depending on cable loss and measurement settings) |
| Alarm Mode | Fixed threshold, differential, and zonal differential |
| Alarm Zones | 500 zones/channel Alarm thresholds can be set independently for each zone |
| Optical Connector | FC/APC |
| Storage Capacity | 1TB |
| Operating Conditions | −10 to +50 °C; 0–95% RH (non-condensing) |
| Power Supply | 220 VAC, -48 VDC (optional) |
| Dimensions (W x D x H) | 483 × 447 × 133 mm (19-inch rack-mount) |
| Weight | <15kg |
Product and application views
Applications and further reading
- Multi-hazard fiber sensing and rescue-support localization in underground coal mines
- Leakage and deformation monitoring for tailings dams and slurry pipelines
- Temperature, strain and vibration monitoring for slopes, landslides and geohazards
- All-fiber fire and operational safety monitoring for road and railway tunnels
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