The impact of the photodiode on the nonlinearity of microwave photonic links

Abstract

A new theory model for the nonlinearity of the commercial PIN photodiodes (PDs) is presented and verified by experiments in this article. The gain and the third-order spurious-free dynamic range (SFDR 3 ) of a basic microwave photonic link have also been studied including the nonlinearity of the PD. Numerical studies indicate that the nonlinearity of PD decreases the practical microwave photonic links' performance. Compared with ideal PD links, the maximum values of signal gain and SFDR 3 in practical links deteriorate by 1.7 and 3 dB, respectively, at various biased points for modulator.

Fiber‐length‐dependence phase noise of injection‐locked optoelectronic oscillator

“…Some work about OEO has been reported in . In this article, we first propose an analytic model for ILD‐OEO and verify it by experiments.…”

Inkjet‐Printed Microlenses Integrated onto Organic Photodiodes for Highly Accurate Proximity Sensing

“…[35] A possible way to enlarge the high intensity nonlinear regime in the future could be to use decreased annealing temperatures that has been shown to have an influence on bimolecular recombination. [41,42] We account for the nonlinear behavior by fitting an empirical derived model to the dynamic range (red solid line) similar to the one proposed for PIN PDs by Hong et al [43] This enables us to calculate the expected FIP effect on the distance dependent current by simulations. A detailed description of the simulations can be found in Section S2 "Simulation proximity measurements and FIP effect" of the Supporting Information.…”

“…We account for the nonlinear behavior by fitting an empirical derived model to the dynamic range (red solid line) similar to the one proposed for PIN PDs by Hong et al. [ 43 ] This enables us to calculate the expected FIP effect on the distance dependent current by simulations. A detailed description of the simulations can be found in Section S2 “Simulation proximity measurements and FIP effect” of the Supporting Information.…”

High-stability Opto-electronic Oscillator

“…It is often used as a local oscillator of the microwave receiver due to its super low phase noise. As for an oscillator, its stability consists of short-term stability and longterm stability, and they usually are characterized by "Phase Noise" and "Allen Deviation" respectively [6][7][8][9]. In OEO loop, temperature-sensitivity devices mainly consist of electro-optic modulator, microwave filter and fiber, which can result in the systematic instability, so stability control circuit is of importance for the long-term stability of OEO.…”