Fig. 10
From: Perspective on photonic memristive neuromorphic computing
a Graphic solution of the optical bistability equation \( T=\frac{I_t}{I_0}=\frac{1}{1+F{\mathit{\sin}}^2\frac{1}{2}\left(\delta +\gamma {I}_i\right)} \) for an optical cavity with operation intensity and switching intensity highlighted. I0, It, and Ii are the incident, transmission and internal intensity, respectively. Here \( F=\frac{4R}{{\left(1-R\right)}^2} \),\( \delta =\frac{4\pi D{n}_0}{\lambda } \),\( \gamma =\frac{4\pi D{n}_2}{\lambda } \), where R is the reflectivity of the cavity, D is the length of cavity, λ is the wavelength, no and n2 are linear and nonlinear refractive index. b Proposal for photonic memristor: a graphene oxide microcavity. c Hysteresis curve as a function of the non-linear refractive index for which wavelength is equal to the length of cavity (D). d Hysteresis curve as a function of the wavelength (for which n2 = 10− 11 m2/GW)