Abstract
All-silicon microring resonator photodiodes are attractive for silicon photonics integrated circuits due to their compactness, wavelength division multiplexing ability, and the absence of germanium growth. To analyze and evaluate the performance of the microring photodiode, we derived closed-form expression of the response transfer function with both electrical and optical behavior included, using a small-signal analysis. The thermo-optic nonlinearity resulting from optical loss and ohmic heating was simulated and considered in the model. The predicted response achieved close agreement with the experiment results, which provides an intuitive understanding of device performance. We analytically investigated the responsivity–bandwidth product and demonstrated that the performance is superior when the detuning frequency is zero.
Highlights
Cheung, S.; Yuan, Y.; Huang, Z.; The silicon photonics platform has been considered the most attractive solution for high-speed network and artificial intelligence applications due to its low cost and high miniaturization [1,2]
We provide a small-signal analysis of all-Si Microring resonator (MRR) PD
It should be noted that critical coupled resonator is favorable for the MRR PD responsivity only if the photon-assisted tunnelling (PAT) effect is much higher than the loss or is proportional to the power decay rate in cavity
Summary
S.; Yuan, Y.; Huang, Z.; The silicon photonics platform has been considered the most attractive solution for high-speed network and artificial intelligence applications due to its low cost and high miniaturization [1,2]. Usually lead Optical to heat depends onelectrical the inputpower wavelength offset away from resonance accumulation as well as thermally-induced nonlinearities, which make the model more power losses and electrical power consumption within the small volume usually lead to complicated because thermal power distribution in MRR can dynamically change the resheat accumulation as well as thermally-induced nonlinearities, which make the model onance wavelength [20,21,22,23]. Completely understand the performance of MRR PD,ofa resonance wavelength [20,21,22,23].ToFor high-power applications, the thermal nonlinearity fully dynamical model considering thermal nonlinear effects required. MRR PD and is appealing to future all-Si PD optimization
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