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Earth Observation (EO) remote sensing provides the ability to measure, understand, and hopefully manage for purposes of commerce, safety and security, and science, our environment and our impact/interaction with it. In EO instruments, single wavelength band measurements are often necessary to allow observation of unique spectral characteristics representative of specific atmospheric and environmental phenomena. Optical filters with their ability to provide highly selective single band and multi-spectral wavelength discrimination in robust and reliable formats are a key contributor in photonics based EO instruments, serving as “the eyes of the instruments”.

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