A novel microring resonator based on multi-Mach–Zehnder interferometers

A bandwidth-tunable multiband microwave photonic filter (MPF) using a strongly coupled microring resonator (MRR) with optical phase modulation is demonstrated theoretically and experimentally. Two notches of the MRR adjacent to the optical carrier break the intrinsic balance of the phase-modulated signal and then two sub-MPFs are formed thanks to the conversion from phase modulation to intensity modulation (PM-IM). The frequency responses of the two sub-MPFs are superimposed to form a passband with a fixed center frequency. Due to the periodicity of the MRR transmission spectrum, multiple passbands separated by a certain spacing appear in the frequency domain and combine to form a multiband MPF, whose bandwidth can be adjusted by tuning the wavelength of the carrier. The tunable bandwidth and shape factors ranging from 0.73 GHz to 2.73 GHz and 5.06 to 1.38 are experimentally performed. The number of passbands can be reconfigured. The proposed multiband MPF has the potential to be employed in modern multi-standard wireless communication systems.

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“…1(a) point A. The transfer function of MRR at the through port, which is derived from the transfer matrix method, is expressed as follows [22]:…”

Section: Principlementioning

confidence: 99%

A Multiband Microwave Photonic Filter Based on a Strongly Coupled Microring Resonator With Adjustable Bandwidth

et al. 2023

Self Cite

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“…Many efforts have been made to enhance the FSR, such as a double Vernier Panda-ring resonator with the maximum FSR of 90 nm (Seyfari et al, 2021), a microring with multi-Mach-Zehnder interferometers with FSR over 88 nm (Y. Chen & Qiu, 2021), a compact microring resonator using low-loss bends with FSR of 35 nm (Song et al, 2020), and a racetrack microring resonator with Fabry-Perot cavities where the FSR is over 150 nm (Kumar Bag & Varshney, 2021).…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Enhanced Optical Free Spectral Range Through Integrated Fano-Microring Configuration

Hairol Aman,

Noorden,

Ahmad Fajri

et al. 2023

MJS

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A numerical analysis of the integrated Fano-microring (IFM) racetrack resonator spectrum was performed to investigate the enhancement of the optical system’s free spectral range (FSR). The FSR is an important optical property which can contribute to the high sensitivity of optical devices. The IFM refers to the combination of Fano resonance produced in the output spectrum through the interaction of Fabry–Perot resonance and circulation resonance. This work focuses on the study of inducing Fano resonance in the microring resonator to optimize the FSR of the system. The results show that the integration of two resonances can produce a Vernier output spectrum, which significantly enhanced the FSR of the system without any need for additional ring waveguides. This work also compared the IFM resonance with the conventional microring resonance. In this simulation, the optimized FSR obtained by the IFM configuration was 266.55 nm, which is five times higher than the conventional microring configuration.

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Wideband-tunable microwave photonic filter using dissipative self-interference microring resonators

Lin,

Liu,

Cheng

et al. 2024

Optics Communications

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A novel microring resonator based on multi-Mach–Zehnder interferometers

Cited by 5 publications

References 23 publications

A Multiband Microwave Photonic Filter Based on a Strongly Coupled Microring Resonator With Adjustable Bandwidth

A Multiband Microwave Photonic Filter Based on a Strongly Coupled Microring Resonator With Adjustable Bandwidth

Numerical Simulation of Enhanced Optical Free Spectral Range Through Integrated Fano-Microring Configuration

Wideband-tunable microwave photonic filter using dissipative self-interference microring resonators

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