Long-Distance Fully Integrated DAS Optical Module (Including AOM Driver)
This mature solution for distributed acoustic sensing (DAS) uses an ultranarrow-linewidth laser, acousto-optic frequency shifter and Raman amplifier as core components in an optimized optomechanical/electrical design. Serial configuration, high integration, environmental interference resistance, compact size and convenient use are provided. Raman amplification increases signal strength and sensing distance. Specific designs and specifications can be customized for sensor manufacturers.
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Overview
This mature solution for distributed acoustic sensing (DAS) uses an ultranarrow-linewidth laser, acousto-optic frequency shifter and Raman amplifier as core components in an optimized optomechanical/electrical design. Serial configuration, high integration, environmental interference resistance, compact size and convenient use are provided. Raman amplification increases signal strength and sensing distance. Specific designs and specifications can be customized for sensor manufacturers.
Specifications
| Parameter | Value |
|---|---|
| Sensing distance L | Typical :50 km |
| Number of Detection Channels N | Single-channel |
| Modulation Mode | External Modulation |
| Narrow linewidth Laser - Center wavelength λ | Typical :1550.12 nm |
| Narrow-Linewidth Laser - Equivalent Spectral Linewidth Δλ1 | Typical :3 kHz |
| Narrow linewidth Laser - Laser RIN Noise | Typical :-105 dB/Hz |
| Acousto-Optic Frequency Shifter-AOM Frequency Shift | Typical :150 MHz |
| Acousto-Optic Frequency Shifter - Extinction Ratio ER | Min :50 dB |
| Acousto-Optic Frequency Shifter - Pulse Width τ | Min :10 ns; Typical :100 ns; Max :300 ns |
| Acousto-Optic Frequency Shifter - Pulsed Frequency PF | Typical :2 kHz |
| BPD - Bandwidth BW | Min :0.1 MHz; Typical :100 MHz; Max :120 MHz |
| BPD - Photoelectric Conversion Gain As | Typical :4×10⁴ V/W |
| BPD - Noise Un | Typical :5 mW |
| BPD - Output Impedance K | Typical :50 ohm |
| Raman Optical Amplifier - Pump Wavelength Range λ0 | Typical :1450 nm |
| Raman Optical Amplifier - Pump Output Optical Power Pout [Customizable] | Typical :500 mW |
| Raman Optical Amplifier - Raman Gain [Customizable] | Typical :12 dB |
| Structure Dimensions [Modular ; Dimensions Customizable] | 208(190)*170*55 mm |
| Output Pigtail type [Modular] | SM-28e FC/APC |
| Communication Interface Type [Modular ; Customizable] | RS-232 |
| Supply voltage [Modular] | DC +12V/GND |
| Electrical power consumption [Modular; at Room Temperature] | ≤45 W |
Applications
Φ-OTDR; Distributed Fiber Sensing .
Key Features
High Signal-to-Noise Ratio ; Operating Environment Temperature :-10~55°C.
Datasheet
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Supplier Information
Ningbo Suola Technology Co., Ltd., founded in 2019, is headquartered in Fenghua District, Ningbo, with its R&D center in Linping District, Hangzhou. As a technology-oriented enterprise specializing in the optoelectronic field, the company focuses on lasers, optical amplifiers, photodetectors, optical modulators, and photoelectric sensing technologies, providing customers with professional optoelectronic devices, integrated optoelectronic modules, and overall sensing solutions. Its main business includes laser series, optical amplifier series, photodetector series, optical modulator series, DAS/DVS integrated optical modules, DTS integrated optical modules, wind/weather lidar integrated optical modules, as well as sensor research projects and customized product development.
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