Abstract

For the 2010 Manufacturing Problem, the participants were required to produce a filter that had normal incidence transmittances of 0.001, 0.01, 0.1, and 0.96, respectively, in four separate $60\mathrm{nm}$ wide bands in the 400 to $700\mathrm{nm}$ wavelength region. The problem is not unlike those that need to be routinely solved in the telecommunication industry. Nine groups submitted a total of 11 different filters for the contest. The number of layers in the filters received ranged from 28 to 678, and the total metric thicknesses varied between 4,038 and $22,513\mathrm{nm}$. The transmittances of the filters were measured at two independent laboratories. Some of the performances were quite close to the specifications.

© 2011 Optical Society of America

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