Proposal of a wavelength filter with a cut corner based on Equilateral-Triangle-Resonator.
We propose an equilateral triangle resonator filter with an output waveguide and analyzed by the finite-difference time-domain technique. The filter can realize directional output with a high Q mode by means of the mode-field coupled into the output waveguide, which results a reduction in the scattering loss at the vertices. In addition, to the deformed equilateral triangle resonator filter, an optimum parameter with a cut corner of 0.23 μm, which is equal to that of the input waveguide and can be an optimal cut, is found to help increase in finesse, Q factors, extinction ratio and the output intensity on resonance of the drop port normalized with the through port .
Laboratory of Nanophotonic Functional Materials and Devices, Institute of Optoelectronic Material and Technology, South China Normal University, Guangzhou 510631, China.
Wei-Cong
WC
Yan
Zhi-You
ZY
Guo
Ning
N
Zhu
Yu-Qiang
YQ
Jiang
D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*