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Linear Transmittance Filter Tutorial

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Linear Transmittance Filter Tutorial

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Linear Transmittance Filter (LTF) has a transmittance that is changing linearly over a specified wavelength range. LTFs are typically used for wavelength identification applications. For this reason, it is critical that the linear filters be monotonic in transmittance over the wavelength range of interest as there must be a one-to-one correspondence between the filter transmittance and a given wavelength.

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