Advances in Optical Technologies

Research Article

Nonstandard FDTD Simulation-Based Design of CROW Wavelength Splitters

Table 3

Computational parameters and resonance modes for the wavelength splitter shown in Figure 2. 𝜃 𝐴 and 𝜃 𝐵 are integral multiples of 𝜋 / ℓ rad ( ℓ = 𝑚 𝑜 𝑑 𝑒 𝑛 𝑢 𝑚 𝑏 𝑒 𝑟 in the disk 𝑂 ).
Computational parameters
𝜆 𝐴 1300 nm
𝜆 𝐵 1550 nm
𝑟 𝑂 1214.08 nm
𝑟 𝐴 1310.52 nm
𝑟 𝐵 1562.54 nm
𝜃 𝐴 3π/11 rad
𝜃 𝐵 3π/9 rad
Grid spacing 5 nm
Refractive index 3.5/1.45 (Si/SiO2)
Computational space 14 μm × 12 m
Resonance modes
Port 𝜆 𝐴 𝜆 𝐵
𝑂 11 mode 9 mode
𝐴 12 mode unexcited
𝐵 unexcited 12 mode