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
For advice on BOTDR interrogator, share your monitoring distance, installation environment and integration requirements with our engineering team. We can help assess sensor placement, commissioning and acceptance criteria for your project.