Tunable multi-wavelength generation using InGaAsP/InP microring resonator with detectable resonance wavelength shift due to a sensing cladding section

• Main Authors: Amiri, I.S., Ariannejad, M.M., Ahmad, Harith
• Format: Article
• Published: Elsevier 2016
• Subjects: Q Science (General); QC Physics
• Online Access: http://eprints.um.edu.my/18291/; https://doi.org/10.1016/j.cjph.2016.08.002

In this research, we use the time-domain travelling wave (TDTW) method to model and simulate a microring resonator (InGaAsP/InP) waveguide based on resonance wavelength shifts. A change of the refractive index of the cladding results in a change of the effective index of the mode propagating within the microring resonator, where it can be observed by a shift of the resonance wavelength, thus providing a tuning mechanism. The total length of the microring resonator is 100μm, with a varying refractive index along 40μm of the cladding section. The Q-factor of the microring resonator is 4.5 × 105, showing high performance of the system. The largest resonance wavelength shift is 3.7nm and is obtained when the medium of the cladding is air.