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US 12,282,188 B2Granted
Ring-resonator filter device
AssigneeFurukawa Electric Co., Ltd.
InventorsJunichi Hasegawa, Noritaka Matsubara
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Abstract
A ring-resonator filter device includes: a waveguide device that includes a core. Further, the core constitutes two ring resonator filters, each of the two ring resonator filters includes two arm portions, a ring-shaped portion, and two optical coupling/branching portions that optically couple the two arm portions and the ring-shaped portion, respectively, and the two ring-shaped portions cross each other.
Claims8
A ring-resonator filter device comprising:
- a waveguide device that includes a core, wherein
- the core constitutes two ring resonator filters,
- each of the two ring resonator filters includes two arm portions, a ring-shaped portion, and two optical coupling/branching portions that optically couple the two arm portions and the ring-shaped portion, respectively, and
- the two ring-shaped portions cross each other, each of the two ring-shaped portions being formed in an 8-shape.
1 more element
Dependencies are inferred from the claim text.