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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 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!