Patent ID: 9335607
Filing Date: 2016-05-10
CPC Classification: G02F

Claim Text:
1. An optical logic gate, comprising: an optical fiber; a reference laser source, injecting a reference signal into one end of the optical fiber; an input laser source, injecting an input signal into an opposite end of the optical fiber, such that the reference signal and the input signal counter-propagate in the optical fiber and are selected so that to cause stimulated Brillouin scattering in the optical fiber; an output signal, exiting the opposite end of the optical fiber, the output signal being created by the interaction of the reference signal and the input signal; and a length of the optical fiber, an input power of the reference signal, and a low power and a high power of the input signal, wherein the low power is lower than the high power, being selected so that: the low power of the input signal yields the power of the output signal above a high threshold; and the high power of the input signal yields a power of output signal below a low threshold, wherein the low threshold is lower than the high threshold.