Storage in Frequency-Selective Recording Materials. Direct Spectral Addressing. The frequency-selective response of certain materials offers a new addressing parameter for optical data storage. Addition of a new addressing parameter offers a means of achieving higher storage density. Quantum Level Transitions involved in Storage.
Information is stored by causing atomic transitions from ground to excited states.
Long term information storage is achieved through the presence of trap states in suitable materials. Physics places limits on the speed of an optical memory that isolates data bits in the frequency dimension. Representing Time-Encoded Datastreams in the Frequency Dimension Spectral Fingerprints. Optical data is often transmitted through the modulation of an optical beam. Simple amplitude modulation, turning the beam on and off, for example, may be used to represent 0 and 1 bits.