Advances in Optical Technologies

Research Article

Nonstandard FDTD Simulation-Based Design of CROW Wavelength Splitters

Figure 2

Wavelength splitter for disk resonators. Gray regions represent microdisks with excited WGMs. 𝑟 𝑂 , 𝑟 𝐴 , and 𝑟 𝐵 are the radii of disks 𝑂 , 𝐴 , 𝐵 , respectively. Δ 𝑂 𝐴 is the gap spacing between disks 𝑂 and 𝐴 ( Δ 𝑂 𝑂 , Δ 𝑂 𝐵 , etc., analogously defined). Source is a superposition of wavelengths 𝜆 𝐴 and 𝜆 𝐵 . WGMs of 𝜆 𝐴 and 𝜆 𝐵 are excited in disks 𝑂 . Disks 𝐴 and 𝐵 are excitable only by 𝜆 𝐴 and 𝜆 𝐵 , respectively.
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