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OTDRs: Finding the Weak Spots in Fiber Links
Michel Leclerc and Vincent Racine, EXFO
An optical time-domain reflectometer sends short pulses of light into a fiber and measures its reflections as a function of time. The delay of these reflections to the detector as well as their...
Infrared Spectral Selection: It Begins with the Detector
Austin Richards, FLIR Systems, Commercial Vision Systems
Spectral selection is a powerful tool that enhances conventional imaging tremendously. Most imaging systems, including the human eye, are designed to image light over a broad range of the spectrum....
Nano-Optics Technology: Optical Alchemy
Hubert Kostal, NanoOpto Corp.
Optics today needs alchemy, and the forces that motivate microchip technology are a key reason why. Today, light can transmit and process digital information as well as electricity can — in...
Spectrum Analysis for DWDM: New Instruments Meet the Challenge
Francis Audet, EXFO
As system and cable installers try to optimize their links, the preferred method has become high-speed DWDM. This demand for bandwidth has led to the development of new test and measurement...
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