Transmission curve

The transmission curve or transmission characteristic^[1] is the mathematical function or graph that describes the transmission fraction of an optical or electronic filter as a function of frequency or wavelength.^[2] It is an instance of a transfer function but, unlike the case of, for example, an amplifier, output never exceeds input (maximum transmission is 100%). The term is often used in commerce,^[3] science,^[4] and technology^[5] to characterise filters.

The term has also long been used in fields such as geophysics and astronomy to characterise the properties of regions through which radiation passes, such as the ionosphere.^[6]^[7]

References

^ Arndt, F. and Saulich, G. (1979), Microwave filters with nonperiodic transmission characteristic. Int. J. Circ. Theor. Appl., 7: 87–96. doi: 10.1002/cta.4490070110
^ Introduction to Spectrophotometry, PowerPoint presentation, slide 16 and the Notes for it, cfcc.edu^{[permanent dead link‍]}
^ "Schneider, Transmission Curves of B+W Filters" (PDF). Archived from the original (PDF) on 2011-10-11. Retrieved 2011-10-04.
^ Manastash Ridge Observatory "show the transmission curves for our Sloan filters"
^ IEEE: Research on curve fitting of transmission T of 2D photonic crystal microcavity: "It is found that the calculated transmission curve fits the Lorentz function"
^ The Relation of Radio Sky-Wave Transmission to Ionosphere Measurements, N Smith, Proceedings of the I.R.E., May 1939; discusses linear and logarithmic transmission curves of the ionosphere
^ Radiation transmission data for radionuclides and materials relevant to brachytherapy facility shielding, P. Papagiannis et al., 2008, American Association of Physicists in Medicine. DOI:10.1118/1.2986153 [1]^{[permanent dead link‍]}. Discusses and calculates transmission curves related with screening of clinical equipment generating ionising radiation.

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[1] Arndt, F. and Saulich, G. (1979), Microwave filters with nonperiodic transmission characteristic. Int. J. Circ. Theor. Appl., 7: 87–96. doi: 10.1002/cta.4490070110

[2] Introduction to Spectrophotometry, PowerPoint presentation, slide 16 and the Notes for it, cfcc.edu^{[permanent dead link‍]}

[3] "Schneider, Transmission Curves of B+W Filters" (PDF). Archived from the original (PDF) on 2011-10-11. Retrieved 2011-10-04.

[4] Manastash Ridge Observatory "show the transmission curves for our Sloan filters"

[5] IEEE: Research on curve fitting of transmission T of 2D photonic crystal microcavity: "It is found that the calculated transmission curve fits the Lorentz function"

[6] The Relation of Radio Sky-Wave Transmission to Ionosphere Measurements, N Smith, Proceedings of the I.R.E., May 1939; discusses linear and logarithmic transmission curves of the ionosphere

[7] Radiation transmission data for radionuclides and materials relevant to brachytherapy facility shielding, P. Papagiannis et al., 2008, American Association of Physicists in Medicine. DOI:10.1118/1.2986153 [1]^{[permanent dead link‍]}. Discusses and calculates transmission curves related with screening of clinical equipment generating ionising radiation.

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Transmission curve

See also

References