1. Theory of high-density low-cross-talk waveguide superlattices
- Author
-
Huashan Yang, Rui Zhu, Hongguo Zhang, Hengrun Hu, Shining Chen, Wei Jiang, and Nan Yang
- Subjects
Coupling ,Physics ,business.industry ,Oscillation ,Superlattice ,Beam steering ,Physics::Optics ,02 engineering and technology ,Surface finish ,Multiplexing ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,Condensed Matter::Materials Science ,020210 optoelectronics & photonics ,Optics ,Transmission (telecommunications) ,law ,0202 electrical engineering, electronic engineering, information engineering ,Optoelectronics ,business ,Nonlinear Sciences::Pattern Formation and Solitons ,Waveguide - Abstract
Waveguide superlattices, a special type of waveguide arrays, can be designed to achieve very low cross talk at submicrometer/subwavelength pitches. The theoretical framework and design rationales for such waveguide superlattices will be presented in depth. Waveguide sidewall roughness can help to deter the coherent coupling between identical waveguides in nearby supercells, but it also induces random fluctuation of transmission. Statistical behavior of the transmission due to roughness in a waveguide superlattice is systematically treated. Complex transmission characteristics due to spectral oscillation and random roughness will be presented, and their evolution with the superlattice length will be analyzed.
- Published
- 2016