OptiSystem Tutorials

SPO optimization—System margin

OptiSystem can optimize parameters in order to maximize, minimize or to target a value for results. This can be done by either using MPO or SPO optimizations. By using the optimization tool you can, for example, optimize the fiber length of the EDFA to obtain the maximum gain calculate the attenuation/gain to obtain a target…

SPO optimization—EDFA fiber length

In this example we show optimization of a single parameter by using SPO. It shows how to optimize the fiber length to maximize the amplifier gain. The project is given in EDFA fiber length optimizationFig.osd. In order to run the optimizations with the components shown in Figure 1, the Laser power is -40 dBm. Default…

EDFA — Basic concepts

The sample file EDFA Basic Concepts.osd shows the basic characterization of the Erbium Doped Fiber Amplifier (EDFA). There are three design layouts: Gain Spectrum, Gain Saturation, and Amplifier Noise. They enable the characterization of the gain, noise figure, and output power under unsaturated and saturated signal input regime. These layouts refer to the topics: Gain…

Booster Amplifier

The project file Booster Amplifier.osd shows the characterization of a booster/power amplifier setup in a single erbium-doped fiber stage heavily doped, bidirectionally pumped by two 980 nm pump lasers. A large signal input power is considered in this case, since high signal input helps to produce high output power, which is necessary to booster/power amplifiers.…

Inline Amplifier

The project file Inline Amplifier.osd shows the characterization of an inline amplifier setup in a single erbium-doped fiber stage, pumped by one 980 nm-pump laser. A small signal input power is considered in this case, where results with high gain and small noise figure values are desirable. The signal input power is swept from -40…

Preamplifier

The project file Preamplifier.osd shows the characterization of an inline amplifier setup in a single erbium-doped fiber stage, pumped by one 980 nm-pump laser in a co-pump scheme. A small signal input power is considered in this case, where results with high gain and small noise figure values are desirable. The erbium doped fiber length…

Pumping requirements

The amplifier performance characterized by the signal output power, gain and noise figure depends on the pump wavelength. The project file “Pumping requirements.osd” shown in two different layouts, “Pump power 980 nm” and “Pump power 1480 nm”, details an amplifier pumped by 980 nm and 1480 nm. The 980 nm and 1480 nm pump wavelengths…

Transient Control in EDFAs

Our goal here is to demonstrate how to use OptiSystem to simulate transient control schemes to avoid or minimize the impacts of transient effects in the system performance. As is well known, failures in some channels and/or add-drop of channels due to network reconfiguration can cause power transients that cause error bursts, which are unacceptable…

Amplifier Characteristics

There are many decisions to make regarding system implementation of specific amplifiers. To make these decisions, a group of typical key characteristics must be extracted from the amplifier. For example, the gain and noise figure versus the input signal wavelength, input signal power or input pump power. To extract the key characteristics of the optical…

Automatic Control Simulation

OptiSystem allows the user to optimize the layout in a variety of ways. User-defined optimizations allow the user to select a parameter and then select a result. The parameter is then manipulated through a number of iterations in order to hit the target value of the result. The user can select a target gain or…