Welcome to, a collection of helpful resources for students, educators and researchers involved with photonics - the technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon.

DICTIONARY+ > Photonics Dictionary Plus Definitions of terms, abbreviations and acronyms related to photonics technology. This reference is in the form of a wiki, meaning the content can be edited and expanded by members of the photonics community.
In fiber optics, a material whose properties, usually of transmission, are distinctly affected by the absorption of water vapor.

HANDBOOK > Photonics Handbook A unique collection of technical design and applications articles, as well as technology primers presenting the basics of the photonics technology.
Passive Athermalization
Maintaining Optical Performance Over Temperature
An optical system is athermalized if its critical performance parameters (such as MTF, BFL, EFL, etc.,) do not change appreciably over the operating temperature range. For rotationally symmetric optical systems, either the lens or the detector moves along the optical axis to maintain optical performance. If the compensating axial motion is accomplished without the use of motors or other active devices, then the optical system is considered passively athermalized. This article will discuss the...

INSTITUTIONS > Educational Institutions Listings of societies, associations, universities and research centers worldwide involved in fostering the education and growth of the photonics industry.
Spectroscopical Society of Japan
An association providing technical information for the spectroscopy industry.

Light Matters Weekly Newscast
Learn more about the industry by watching Light Matters, a weekly video newscast on Photonics Media editors deliver research news, industry highlights, tradeshow coverage and more.

For more videos on optics, lasers, imaging, sensing, fiber optics, biophotonics and other photonics applications, visit the Photonics Media Video Gallery