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High Precision DVS Module from Reliable China Suppliers | Customizable Factory Solutions with Real-Time Monitoring
Product
The DVS integrated module employs optical fibers as vibration sensors, utilizing a single fiber to simultaneously monitor vibrations and transmit signals. Based on Rayleigh's backscattering principle, when external vibrations interfere with the fiber, they cause fluctuations in the amplitude of reflected light within the fiber. The module detects these variations to perceive vibration intensity and precisely locate the vibration source.
The module integrates multiple components required for detection, typically including a 3K narrow linewidth fiber laser, an AOM acousto-optic modulator, a pulsed EDFA (erbium-doped fiber amplifier), an optical circulator, a Raman amplifier, and a high-signal-to-noise ratio detection module. These components work in concert to achieve functions such as generating, modulating, amplifying, and detecting optical.
Product Applications
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Structural health monitoring—Bridges, DAMS, high-rise buildings, etc.
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Geology and resource exploration—petroleum exploration, seismic monitoring.
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Environment and security monitoring—forest fire prevention, border security.
Product Parameters
| Description | Min | Typ | Max | Unit | ||
| Sensor Distance | 40 | 60 | Km | |||
| Preheating Time | 1.5 | 3 | Min | |||
| UNL/EDFA | ||||||
| Central Wavelength | 1550.12 | nm | ||||
| Intrinsic light | 5% | |||||
| Line Width | 1.7 | 3 | 3.5 | KHz | ||
| Pulse Length | 60 | 100 | 200 | ns | ||
| Repeat Frequency Rate | 1 | 2 | KHz | |||
| Pulse Peak Optical Power | 10 | 1000 | mw | |||
| AOM | ||||||
| Extinction Ratio | 55 | 60 | dB | |||
| Up/down Time | - | - | 30 | ns | ||
| Input Impedence | 50 | Ohm | ||||
| Frequency Shift | 80 | MHz | ||||
| Detection Approaches | one way | |||||
| Modulation Mode | external modulation | |||||
| Type of tail fin | ||||||
| Type of Fiber | SMF28e 900um-Pine Casing | |||||
| Tail Fiber Length (excluding head) | 99 | 100 | 101 | cm | ||
| Connector Type | FC/APC | |||||
| work environment | ||||||
| Operating Temperature | -15 | 25 | 55 | ℃ | ||
| Working Humidity | 10 | - | 95 | % | ||
| Storage temperature | -20 | - | 70 | ℃ | ||
| Storage Humidity | 5 | - | 95 | % | ||
| Voltage and power consumption | ||||||
| Supply Voltage | 11.7 | 12 | 12.5 | V | ||
| Maximum Power | - | - | 30 | W | ||
| working current | 1 | A | ||||
Light path diagram
Product Size
Frequently Asked Questions (FAQ)
What is the working principle of the DVS integrated module?
The module utilizes optical fibers as vibration sensors based on Rayleigh's backscattering principle. External vibrations cause fluctuations in the amplitude of reflected light within the fiber, allowing the system to detect vibration intensity and locate the source.
What components are integrated inside the DVS module?
It integrates a 3K narrow linewidth fiber laser, an AOM acousto-optic modulator, a pulsed EDFA, an optical circulator, a Raman amplifier, and a high-signal-to-noise ratio detection module.
What is the maximum sensing distance of this DVS module?
The module supports a typical sensing distance of 40 Km, with a maximum capability of up to 60 Km.
What fiber and connector types are used?
The module uses SMF28e 900um-Pine Casing fiber and features an FC/APC connector type.
What are the operating temperature and humidity limits?
The operating temperature range is -15℃ to 55℃, and the working humidity ranges from 10% to 95%.