Search
Menu
Photonics Dictionary

dye-polymer optical disc

A type of erasable data storage device that uses a medium deposited on the disc in two layers, each dyed to absorb a different wavelength of laser light. To record data, the lower layer is heated by a laser so that it expands and forms bumps representing bits of information that can be read by the same laser at a lower temperature. Erasure is accomplished by heating the upper layer at the second wavelength until it expands and displaces the bumps.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.