Photonics Handbook®
A unique collection of technical design and applications articles, as well as technology primers presenting the basics of the photonics technology.
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ARTICLE OF THE HOUR Optical Coatings
Improving Traditional Technology
The challenges of producing dense wavelength division multiplexing (DWDM) filters for telecommunications has revolutionized the optical coating industry. This has resulted in coatings that display precision and stability orders of magnitude better than earlier offerings. The common polycrystalline materials used for optical thin-film materials do not satisfy the requirements of telecommunications because of the instabilities caused by moisture absorption in their voids. Scatter from the grain...