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Swept-Wavelength Testing

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Swept-Wavelength Testing

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With the recent trend towards higher channel counts in telecommunications systems, the efficiency of wavelength-characterization measurements is becoming a major issue. Although the broadband source and OSA method is fast, it doesn't provide the resolution that is required to characterize complicated devices. Techniques based upon lasers that “step” then measure can provide both the dynamic range and the resolution but are very slow. The swept-wavelength measurement technique, however, is faster than the OSA method and has the resolution of a laser. While this method has applications in the area of final test, it also has significant benefits in the assembly of DWDM components and can provide tremendous cost savings as devices grow in complexity.

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