DAS Integrated Optical Module

DAS Integrated Optical Module

Distributed fiber Acoustic Sensing(DAS),based on the principle of phase OTDR, using a single ordinary optical fiber as a transmission, the Rayleigh scattered light inside the fiber to detect, obtain phase and frequency information, to achieve the detection of sound, vibration and other signals, widely used in oil, gas pipelines, perimeter security, high-speed rail transit and other fields.

 

For the field of distributed fiber optic acoustic sensing, FIBERWDM has launched DAS integrated module, which integrates self-developed ultra-narrow linewidth laser, linewidth <3KHz, 80M_AOM, pulse amplifier, balanced photodetector. The module is highly integrated, with small size and high reliability.

  • Product Detail

DAS Integrated Optical Module

 

Features

  • Highly Integrated   (UNL, AOM, EDFA, BPD)
  • Working Temperature: -15~55℃
  • High Reliability and Stability
  • Flexible Control Mode
  • Single / Dual Channel

Applications

  • Oil and Gas Pipelines
  • Perimeter Security
  • High-speed Rail Transit
  • Power Cables

 

Optical Path

 

DAS optical module

Product Specification

 

Product Model: FW-DASXXX

Parameters

Min

Typ.

Max

Unit

Sensing Distance

- 20 40 km

Center Wavelength

-

1550.12

  nm

Linewidth

- - 3

Khz

Pulse Width

60 100 -- ns

Repetition Rate

- 2 20

KHz

Peak Pulse Optical Power

- 23 30

dBm

Input Impedance

- 50 -

Ohm

Shift Frequency

- 80 -

MHz

Wavelength

800~1700

nm

Gain

30K

V/A

Coupling Mode

AC

-

Bandwidth

100

MHz

Modulation Mode

External

-

Note:1)Single and Dual channel can be selectable; XXX: 348-Single Channel, 349-Dual Channel

          2)The signal-to-noise ratio at the tail is 4dB

 

Parameters Indicator Remark

Electrical

Power Supply

DC +12V/GND

 

Power Consumption

<24W

Full-temperature

Mechanical

Dimensions

180*140*30mm

 

Pigtail Type

SMF

Communication

Connector

4PIN

Level

RS232

Interface

Read and Set Parameter

 

 

Parameter

Min

Max

Unit

Working Temperature

-15

+55

Storage Temperature

-20

+70

Related Humidity

5

95

%

 

Mechanical Dimension

 

DAS optical module

 

For ordering information and custom solutions, please contact us: sales@fiberwdm.com

 

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