Fiber Bragg Grating (FBG) Interrogators

FBG interrogators measure and analyze the data collected by fiber Bragg grating sensors in dynamic and static monitoring applications. The device transmits light through the fiber; once it reaches each FBG sensor, certain wavelengths are reflected back. Interrogator gauges reflected wavelengths and transmit them into engineering units. Thus, it is possible to identify any physical alterations at every sensor position. This technology facilitates accurate and reliable monitoring in multiple fields, such as structural health monitoring, aerospace, and energy industries.

Specifications Overview

Tailored interrogation systems customized to fulfill client requirements. We also provide standard interrogator products that suit a wide variety of applications. Our engineers develop solutions specialized for your needs and ensure excellent performance of your sensing devices.

Standard

Standard FBG interrogator is designed to assess the spectral response of numerous FBG optical devices.

Sample rate, Hz	50, 100
Wavelength range, nm	1520-1570, 1520 - 1590
Number of optical channels	4 or 8
Sensors per channel, max	up to 25
Resolution, pm	< 1
Long-term accuracy, pm	± 5
Connectors	FC/APC
Communication interfaces	Ethernet
Data logging, Gb	32
Operating temperature, °C	-30...+70
Dynamic range, dB	20
Power supply, VDC	9-36
Consumption, W	7
Dimensions, mm	293 * 190 * 66
Weight, kg	2.0

High-Frequency

High-Frequency FBG interrogator is a precise tool employed for high-speed FBG sensing and the characterization of the high-frequency spectral response of optical FBG devices.

Sample rate, kHz	19.2 by default; 1, 5, 10 as options
Wavelength range, nm	1515 - 1585
Number of optical channels	1, 8
Sensors per channel, max	8
Resolution, pm	< 1
Repeatability, pm	< 5
Connectors	FC/APC
Communication interfaces	USB 2.0
Operating temperature, °C	0...+45
Power supply, VDC	9-36
Dimensions, mm	110 * 130 * 47
Weight, kg	0.54

MX Interrogator

The MX interrogator is designed to provide both static and dynamic FBG measurements, along with a broad bandwidth range of 0.1-3.0 nm. It is an ideal solution for field use because of its robust enclosure.

Sample rate, kHz	100, 1000, or 2000
Sample rate (Full Spectrum), Hz	8
Wavelength range, nm	1538-1568 or 1528-1568
Number of optical channels	1, 2, 4, 8, 16, 24, 32 (Synchronous Scan, No switches)
Sensors per channel, max	up to 30
Repeatability, pm	± 2
Long-term accuracy, pm	± 10
Connectors	LC/APC (with internal shutters)
Operating temperature, °C	-15...+55
Dynamic range, dB	25
Power supply, VDC	5
Dimensions, mm	180 х 126 х 40
Weight, kg	0.64
Communication interfaces	Ethernet (RJ45), UART port

Features and capabilities

Optromix FBG interrogators capture signals at specific wavelengths to assess different parameters such as strain, temperature, pressure, and speed. Our devices can manage as many as 8 optical channels and handle 20 sensors for each channel. The system includes a broadband radiation source and is capable of performing spectrum analysis. Optromix provides specialized software to control the device on the PC.

Fiber Bragg Grating (FBG) interrogators are indispensable in many sensing applications due to their unique features.

Multi-channel support

Certain models allow for concurrent interrogation of several FBG sensors. The systems manufactured by Optromix support up to 8 channels, each accommodating 20 sensors.

High accuracy

FBG interrogators guarantee precise measurements of minor variations in the parameters that need to be assessed.

Real-time monitoring

FBG interrogators process data instantly, and enable adaptable peak detection algorithms, providing fast, accurate and reliable measurements.

Compact design

FBG interrogators are well-fitted for both laboratory and field use. Additionally, a device may feature a field deployable enclosure to endure severe environmental conditions.

Applications

FBG interrogators of different types have a wide variety of applications. Some of the devices are equipped with durable cases to be utilized for structural monitoring in harsh environments. Customized interrogation systems are manufactured to tailor any specific client requirements. FBG interrogators are the best in various sectors, such as coal mine safety, oil and gas extraction, power grid oversight, wind turbine oversight, and structural health assessment.