Measurement and alignment of linear variable filters

Rob Sczupak; Markus Fredell; Tim Upton; Tom Rahmlow; Sheetal Chanda; Gregg Jarvis; Sarah Locknar; Florin Grosu; Terry Finnell; Robert Johnson

doi:10.1117/12.2290689

22 February 2018 Measurement and alignment of linear variable filters

Rob Sczupak, Markus Fredell, Tim Upton, Tom Rahmlow, Sheetal Chanda, Gregg Jarvis, Sarah Locknar, Florin Grosu, Terry Finnell, Robert Johnson

Author Affiliations +

Proceedings Volume 10539, Photonic Instrumentation Engineering V; 105390Y (2018) https://doi.org/10.1117/12.2290689
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Linear variable filters have become a common way to impart wavelength selectivity into optical systems with a minimum of optical elements. Measuring the filter in the presence of steep spectral-spatial gradients is the primary difficulty in characterizing these filters, requiring a small aperture beam resulting in a corresponding loss of signal power. We will discuss our approach to mapping the spectral and spatial distribution of these parts as well as a method to specify these filters. We will also suggest methods to calibrate and align the filters onto a detector, camera or chip.

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Rob Sczupak, Markus Fredell, Tim Upton, Tom Rahmlow, Sheetal Chanda, Gregg Jarvis, Sarah Locknar, Florin Grosu, Terry Finnell, and Robert Johnson "Measurement and alignment of linear variable filters", Proc. SPIE 10539, Photonic Instrumentation Engineering V, 105390Y (22 February 2018); https://doi.org/10.1117/12.2290689

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