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QPS Photronics
217 St-Louis, Pointe-Claire, Quebec
H9R 5L7 Canada
Phone : +1 514 697-4728
Email : [email protected]
www.qpscom.com
DFB Scanner®
DFB Scanner® Overview
High Finesse Phase-Shifted Grating
The DFB Scanner® is a spectrum analyser (or
interrogator) defined by its internal DFB laser
working within the ITU Grid Channel #43 of
the C-Band. Its primary mandate is to emulate
well-established high resolution wide tuning
range spectral analysers. Our system offers
similar basic functions with increased
performances.
The High Finesse Phase-Shifted Grating is a recent breakthrough
that spurred the DFB Scanner® into existence. The FBG-based
architecture is a narrow cavity whose internal twin-FBG mirrors
enable very high reflectivity, resulting in a greater resolution
capability . Our High Finesse Phase-Shifted Gratings are
manufactured by selecting phase masks that match closest to the
interrogator embedded DFB laser center wavelength (1542.9 nm)
at 5°C.
The DFB Scanner® was created to fulfill a
need for high resolution specialized tool
focusing on the functions needed while being
highly affordable.
Given the DFB Scanner® system works in
reflection, it is advised to use the High
Finesse Phase-Shifted Grating (PSG) that
comes along as accessory. The λ0 was made
to be matched to the embedded DFB laser.
However, any optical architecture allowing
reflection where an observable spectrum is
ascertained to be within the ITU Grid
Channel #43 is also fine.
Features and Applications
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Detecting PD and Acoustic emissions with QPS’s PDH optical lock-in receiver
Crack detection in reinforced concretes
Delamination detection in composites aerospace structures
Welded joints monitoring in High Speed Rails
Cavitation detection in Hydro turbine blades
Measure water turbidity in high speed water flow
All kinds of extremely small leak detection such as in oil, gas pipelines or giant fuel tanks
Hot spots detection and monitoring in bus bar connection in large generators and transmission lines
Precision worthy of the best: Everything is calibrated with a Bureleigh Wavelength Meter
Supporting OEMs and Developers
Customization Services to adapt to your specific needs
Making you Safe and Profitable!
Software – User Interface
The DFB Scanner algorithm can be broken down
into two stages. There is first the coarse turning
stage and then the fine tuning one. The first allows
to see the entirety of the spectrum within the ITU
Grid Channel #43 to determine the region of
interest (ROI). The fine tuning will enable high
resolution study of the ROI.
Specifications of the DFB Scanner® System
High Finesse Phase-Shift Grating Sensor (Accessory included with the System)
Minimum
Maximum
Center Wavelength (nm)
1530
1565
Wavelength Tolerance (nm)
±0.1
±0.2
Grating Cavity Length (mm)
1
20
Operating Pressure:
100psi
Fiber Connector:
SC/APC(default) / FC/APC(customized)
Non-Destructive Temperature:
-40°C to 125°C
DFB Scanner® Interrogator
Output:
Voltage: 0~5V
Current: 4~20mA
Number of Channels
Min: 1
Max: 8
Resolution:
Strain: 0.001 µε
Temperature: 0.001 °C
DFB Laser Wavelength Tunability Range
1541.1 to 1543.1 nm (Δλ=3 nm)
Center Wavelength :
1542.9 nm, Optional the full C-Band in 96 channels ITU Grids
Residual Noise:
<3mVrms overall noise
Operating Temperature :
5°C to 40°C (in practice, ceiling temperature equals to 35°C)
Ideal Environment of Use or Storage
Stable Temperature Environment at 25°C. Heavy humidity to be avoided.
Fiber Connector:
SC/APC(default) / FC/APC(customized)
Computer Interface:
USB 2.0
Supply Voltage:
100-200 Vac 50/60Hz
3U Portable Casing Size:
366mm(W) x 147mm(H) x 325mm(D)
Making you Safe and Profitable!