Broad Band Optical Monitoring in the Production of Gain Flattening Filters for Telecommunication Applications
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We consider the applicability of broad band optical monitoring to the production of gain flattening filters for telecommunication applications. Based on the simulation of filter deposition and on the rigorous mathematical analysis, we show that it is possible to achieve filter target characteristics due to the correlation of thickness errors and to the error self-compensation effect connected with this correlation. We also discuss the choice of a practically optimal spectral range of the monitoring procedure.
Keywordsthin films optical coatings optical monitoring
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