Harnessing Electro-optic Effect in Directional Coupler for Implementation of Optical Digital Data Transmission Circuits

The paper describes the design and implementation of optical data transmission circuits using an innovative approach based on the electro-optic effect in a directional coupler (EODC). Optical multiplexers (MUX), demultiplexers (DEMUX), encoders, decoders, and priority encoders are all included in the proposed circuit design to enable efficient and reliable data transfer.Electro-optic effect in a directional coupler have been analysed theoretically and numerically, including the detailed mathematics of coupled wave theory. The proposed device is made of 𝐺𝑎𝐴𝑙𝐴𝑠 material produced from a 3μ𝑚ൈ3μ𝑚modulator. The appropriate vale of coupling lengthሺ𝐿஼ሻ, light wavelength, refractive index changeሺ𝛥𝑛ሻ, electric field magnitude and other parameters are considered for an efficient generation of fundamental logic gates. The design process and the simulation results provide in-depth analysis, highlighting the feasibility and utility of our approach in enhancing the performance of optical data transmission devices