Design and Feasibility of Modular Design for the Electro-Optical Waveguide for Customization and Fabrication Improvement

The common Electro-Optical (EO) waveguide used an integrated electrode design that embedded the electrode in the metal layer of the waveguide. This design has its own disadvantage since post-fabrication customization of the electrode and waveguide structure is impossible. This research proposes a solution for applying the modular design concept to the EO waveguide. The device is separated into three major components: the electrode, the EO waveguide, and the retention unit. This allowed customization in post-fabrication and improved the simplicity of the fabrication. The proposed Long Period Grating (LPG) EO waveguide has an operating wavelength range of 1,510–1,531 nm, with alternative post-customization to alter its operating wavelength to 1,466–1,483 nm. The device can be fabricated with much simpler machinery and could be done in parallel.