Xiamen Fengxing Optoelec-Tek Co., Ltd.  |  Distributed Acoustic and Vibration Monitoring System

Website: www.optoelectrotek.com

Email: sales@optoelectrotek.com / info@optoelectrotek.com

Product Manual

2026.02

Long-Distance Sensing

Sensing range > 50 km

Broadband Capability

0.01 Hz  ~ 100 kHz

High Spatial Resolution

Supports meter-level positioning; min. optical pulse width: 10 ns
Higher spatial resolution with microstructured scattering-enhanced fiber

Flexible Field Deployment

Field Rack Mount

Portable system configuration

Real-Time Acquisition & Processing

Supports real-time data acquisition, processing, display, and historical playback

User-Friendly Software Interface

Provides parameter configuration, curve display, waterfall plots, and data management functions

01  Product Overview

Fully Distributed Acoustic Monitoring

Standard telecom fiber can be used as the sensing array and is compatible with scattering-enhanced fiber

DAS REAL-TIME SENSING

02  Principle & System Composition

The system injects coherent optical signals into the sensing fiber and collects backscattered interference information along the line. External acoustic waves or mechanical vibrations cause local strain and phase changes in the fiber. Through high-speed acquisition and digital demodulation, the system forms continuous acoustic sensing channels and outputs vibration intensity, frequency characteristics, event location, and time-series data.

Module

Function Description

DAS Optical Module

Ultra-narrow-linewidth light source, backscattered signal acquisition, phase demodulation, and Raman amplification configuration

Computing and Processing Unit

High-performance CPU/GPU platform for real-time acquisition, processing, and display

Data Storage Unit

Large-capacity disk array with RAID support for long-term data recording and playback

Software Platform

Parameter configuration, real-time display, real-time waterfall plot, historical data playback, and interface management

System Form Factor

Rack-mount and portable configurations for fixed stations and mobile inspection

Note: The actual system composition can be configured according to sensing distance, sampling frequency, data storage period, interface mode, and onsite environmental rating.

03  Technical Parameters

Parameter

Specification

Notes

Sensing Distance

> 50 km

The actual achievable distance is affected by fiber attenuation, connection loss, amplifier settings, etc.

Gauge Length

2 ~ 1000 m configurable

A smaller gauge length improves spatial positioning; a larger gauge length generally improves SNR and long-distance stability.

Frequency Response

0.01 Hz  ~ 200 kHz

Set according to event frequency, monitoring distance, data volume, and storage capacity.

Raman Amplification

1450 nm distributed Raman amplification (optional)

Applicable to optical power compensation and system performance optimization for long-distance links.

* 0.01 Hz is an equivalent/abstract sampling capability obtained through historical data and digital processing; real-time acquisition capability and effective frequency range should be confirmed based on onsite configuration, fiber length, and algorithm settings.

04  Computer, Storage & Conditions

Item

Configuration Description

Core Configuration

i9 CPU, 64 GB RAM, 2 TB SSD, 16 GB GPU, 2.5G Ethernet (optional), Thunderbolt port (optional)

Power Supply

100 ~ 240 V AC (50 ~ 60 Hz)

Item

Configuration Description

Storage Capacity

Supports up to 120 TB, including 6 × 20 TB hard drives, RAID supported

Communication Interfaces

10G SFP+, 2.5G Ethernet, or Thunderbolt (portable configuration)

Power Supply

AC 100 ~ 240 V

Parameter

Specification

Operating Temperature

0 ~ 40 °C (standard)  -40 ~ 50 °C (optional)

Operating Humidity

10 ~ 85 %RH (non-condensing)

System Power Supply

100 ~ 240 VAC

Note: Computer, storage capacity, number of interfaces, and wide-temperature grade can be customized according to project requirements.

05  Software & Deployment

Function Module

Description

Real-Time Acquisition and Display

Real-time data acquisition, curve display, waterfall plot display, and dynamic event localization

Signal Processing

Phase demodulation, filtering, spectrum analysis, event energy extraction, and time-series extraction

Historical Data Management

Supports data storage, playback, export, and offline review analysis

Deployment Method

Typical Application

Field Rack Mount

Suitable for fixed stations, long-term continuous operation, and pipeline/perimeter/infrastructure monitoring

Portable System

Suitable for mobile testing, onsite inspection, engineering acceptance, and temporary monitoring tasks

Data Center / Station Control Access

Can connect to servers, platforms, or local storage systems through high-speed network interfaces

06  Appearance & System Design

Field Rack Mount

Portable System

Naming Example

Description

FXDAS

Standard configuration of the distributed acoustic fiber-optic sensing system

FXDAS + Field Rack Mount

Field rack-mount deployment configuration

FXDAS + Portable System

Portable testing and inspection configuration

FXDAS + Storage Option

Expanded storage capacity or RAID configuration

Statement: This document is intended for product introduction. Due to differences in fiber links, onsite environments, configuration combinations, and software versions, the final performance specifications, delivery list, and service scope are subject to the technical agreement and order confirmed by both parties.