Semiconductor optical amplifier cascaded optical single‐sideband modulation with phase pre‐distortion

Abstract

tion to the total inductance value of the spiral inductor, as they are in quadrature with the excitation currents. The effects of both the skin effects and the eddy currents on the overall inductance value were explained using the equivalent circuit model and validated by experimental data. REFERENCES1. A.M. Niknejad and R.G. Meyer, Analysis, design, and optimization of spiral inductors and transformers for Si RF IC's, IEEE J Solid-State Circ 33 (1998), 1470 -1481. 2. Y. Koutsoyannopoulos et al., A generic CAD model for arbitrary shaped and multilayer integrated inductors on silicon substrates, Proc ESSDERC, 1997, pp 320 -323. 3. J.R. Long and M.A. Copeland, The modeling, characterization and designed monolithic inductors for silicon RF ICs, IEEE J Solid-State ABSTRACT: An optical single sideband modulation with a cascaded semiconductor optical amplifier (SOA) is proposed and experimentally demonstrated. The single sideband-modulated signal is predicted using the phase predistortion technique in the RF input of the Mach-Zehnder modulator. The predicted results are compared with the measured data and good agreement is reported. ABSTRACT: A TLM model suitable to simulate the propagation of electromagnetic waves in Tellegen media is presented. The angle tilt between electromagnetic field vectors, the intrinsic impedances and the effective parameters of the medium are computed. The results for a monochromatic source are in very good agreement with the analytical solution.

Overcoming chromatic dispersion effects with enhanced RF gain using the phase detuning technique in an SOA cascaded optical single‐sideband transmission

“…When the phase-shift difference at the two RF signals of the MZM is increased to far from 180°in the DSB modulation, the optical sidebands also will not be symmetric with regard to 0 as well. This means that the optical SSB signal is distorted when this signal is injected into the SOA and could be recovered to the SSB signal when the phase-shift difference in the two RF signals of the MZM is equal to the amount of phase distortion caused in the SOA [10]. From this result, it is inferred that this recovered SSB signal, with larger RF gain, does not show any chromatic dispersion effects like the SSB signal without SOA.…”

“…In this system, the SSB signal, injected into the SOA, is distorted and this distortion can be recovered to the SSB signal with high-RF power by detuning the RF phase of the MZM drive signal [10]. Figure 2 shows the RF powers of the SSB signal at the MZM output with distorted and detuned signals at the SOA output from the SOA input power.…”