The QL-VHS100K C+L Band FBG Interrogator is a portable, AI-powered, very-high-speed optical interrogator for real-time monitoring of up to 16 fiber Bragg grating sensors per fiber across 2 to 8 fiber channels. It offers 100 kS/s sampling, C+L band operation, integrated computing, Ethernet connectivity, and precise measurement for strain, vibration, acoustic emission, temperature, and related parameters.
The QL-VHS100K C+L Band FBG Interrogator is a compact and portable fiber optic sensing platform designed for high-speed, multi-channel measurement in research, industrial monitoring, transportation, aerospace, railway, automotive, and structural health monitoring applications. Furthermore, it is engineered for concurrent monitoring of fiber Bragg grating sensors with high accuracy and stable performance in demanding environments.
This system supports 2 to 8 fiber channels and can monitor up to 16 FBG sensors per fiber channel. This allows dense multi-point sensing in a single interrogator. It operates across an approximately 80 ±3 nm C+L band spectral range. In addition, it covers roughly 1527 ±1.5 nm to 1607 ±1.5 nm. This enables broad optical sensing capability for advanced fiber optic sensor networks.
In addition, the system is a prime example of a QL VHS100K FBG Interrogator for C+L Band applications. The platform is designed for real-time monitoring of strain, vibration, acoustic emission, temperature. Furthermore, it supports derivative measurands such as pressure, acceleration, and force.
The QL-VHS100K delivers 100 kS/s concurrent measurement speed on all FBGs on each sensing fiber. It supports a measurable signal bandwidth of up to approximately 45 kHz, making it suitable for very-fast dynamic events including acoustic emission.
If you require a C+L Band FBG interrogator for QL VHS100K projects, this device meets advanced needs. The listed strain dynamic range is 4,000 µε for each FBG when using 16 FBGs, 8,000 µε for each FBG when using 8 FBGs, and 16,000 µε for 4 FBGs on each sensing fiber.
Temperature measurement range is -200°C to 300°C, with an option for up to 1000°C.
Measurement performance includes resolution below 1 pm, sub-0.1 pm with FFT, and absolute accuracy better than ±5 pm.
The interrogator also provides approximately 48 dB ±15% interrogator dynamic range and 96 dB ±15% DAQ dynamic range. For those needing fiber Bragg grating sensor solutions, consider the QL VHS100K C+L Band FBG Interrogator for its precision and versatility.
The system includes a proprietary photonic integrated circuit and optical connectors in FC or E2000 APC. It also provides source optical power of approximately 17 dBm.
For onboard operation, the system includes an integrated industrial computer with 8 GB RAM and 1 or 2 TB NVMe SSD storage. It runs Debian 12 OS.
It also includes an integrated AI module with 26 TOPS of compute power for algorithmic processing and analytics. When you choose this system, you leverage the key advantages of the QL VHS100K C+L Band FBG Interrogator in modern AI-driven measurement.
The interrogator uses iSenseView® software. It communicates via Ethernet and supports continuous measurements and extended data logging without requiring an external computer.
The unit is built in a rugged, solid-state, powder-coated stainless-steel chassis with no moving parts. It is designed to operate in harsh environments from -10°C to +55°C, with storage from -20°C to +70°C. >
Key Features
Typical applications include:
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