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Before I get into my main design, let us have some idea on what it is all about. For the past few years, Silicon waveguides based on Silicon-on-Insulator (SOI) platform have become a famous research field in the interest of their high capability in optoelectronic circuits.
SOI technology is a good choice for optical waveguide owing to its very high index contrast between silicon and silicon dioxide.
With high index contrast, the fabrication of dimensions of a few 𝜇m Ąż 𝜇m ultra-compact silicon photonic devices and circuits can be achieved.
Effective index is one of the most significant characteristics in silicon waveguides especially in designing of an optical system as it determines the propagation constant of an optical field, although in high-speed communication in which dispersion might be a limiting factor.
Waveguide polarizations are defined as the characteristic of a particular waveguide structure which consists of TE and TM mode. TE is transverse electric and TM is transverse magnetic.
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IEEE/ICACT20210161 Slide.03
[Big Slide]