What is optical ring?

Some articles on optical ring, optical:

Optical Ring Resonators
... An optical ring resonator is a set of waveguides in which at least one is a closed loop coupled some sort of light input and output ... but are not limited to being, waveguides.) The concepts behind optical ring resonators are the same as those behind whispering galleries except that they use ... will be at resonance within the loop, the optical ring resonator functions as a filter ...
Optical Ring Resonators - Applications
... Due to the nature of the optical ring resonator and how it "filters" certain wavelengths of light passing through, it is possible to create high-order optical filters ... This would allow for "small size, low losses, and integrability into optical networks." Additionally, since the resonance wavelengths can be changed by simply ... If an optical fiber experiences mechanical strain, the dimensions of the fiber will be altered, thus resulting in a change in the resonant wavelength of light emitted ...

Famous quotes containing the words ring and/or optical:

    Time has no divisions to mark its passage, there is never a thunderstorm or blare of trumpets to announce the beginning of a new month or year. Even when a new century begins it is only we mortals who ring bells and fire off pistols.
    Thomas Mann (1875–1955)

    It is said that a carpenter building a summer hotel here ... declared that one very clear day he picked out a ship coming into Portland Harbor and could distinctly see that its cargo was West Indian rum. A county historian avers that it was probably an optical delusion, the result of looking so often through a glass in common use in those days.
    —For the State of New Hampshire, U.S. public relief program (1935-1943)