Study on characteristic of cascaded micro-ring resonators vernier filter
Abstract：A simple optical vernier filter with cascaded micro-ring resonators is proposed. Using the signal flow graph method, the mechanism of the device is analyzed in detail. Meanwhile, analytic expressions of transmission function and its finesse, contrast are derived with the mason formula. Simulation results show that the contrast, finesse and the free spectral range of the proposed vernier filter can be increased remarkably com- pared with the individual one mico-ring resonator. These results provide the theoretical basis for the proposed vernier filter is better used to filter, dispersion compensator and optical switch in wavelength division multiple system.
Keywords：micro-ring resonatorsvernier effectsfree spectral range
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 357-363 )