OptiSystem Applications

Encircled Flux

Encircled flux, as the name implies, describes the flux encircled within a circular radius inside the fiber.
Encircled flux is often quantified as the radius from the center of the fiber required to encircle 25% and 75% of the light energy through the fiber.
The power distribution of a fiber described by the encircled flux value is a crucial factor in ensuring the required data transmission rate in Gigabit Ethernet systems.

Matlab Cosimulation

BER Analysis Using Matlab®/OptiSystem Automation This example demonstrates the use of Matlab® software to call OptiSystem and calculate the bit error rate after the OptiSystem simulation. Samples: MatlabOptiSysBER.m OpticalLinkProject.osd The Matlab file “MatlabOptiSysBER.m” executes the following functions: Generates the data (sequences of bits) that are transmitted through OptiSystem; Opens OptiSystem; Load file OpticalLinkProject.osd that has…

OptiSPICE Netlist Component

This lesson describes how to create a transmitter using an external modulated laser. You will become familiar with the Component Library, the Main layout, component parameters, and visualizers.

FTTH (Fiber To The Home)

FTTH: OCDMA Network Layout

A broadband access network offers various high-speed services to the end-user such as internet, multimedia, tele-medicine and distant learning…

DWDM (Dense Wavelength Division Multiplexing)

DWDM Layout

Dense Wavelength Division Multiplexing (DWDM) is a technology that allows multiple information streams to be transmitted simultaneously over a single fiber…

Coherent Optical OFDM

RF spectrum for the in-phase component

Orthogonal frequency division multiplexing (OFDM) is a multicarrier transmission technique where a data stream is carried with many lower-rate subcarrier tones…

100 Gbps DP-QPSK System with Digital Signal Processing

Constellation diagram (for polarization X)

The combination of polarization-multiplexing and quadrature phase-shift-keying (PM-QPSK or DP-QPSK) is emerging as one the most promising solutions to reach bit rates of 100 Gbps and higher.

OCDMA Network Design

Represents the Eye Diagram, BER, and Q-Factor for User 1.

Optical Code-Division Multiple-Access (OCDMA) system simulation is crucial for optical engineers designing networks that require high levels of privacy and security. This Application Note describes how OptiSystem simulates such a network.

Analysis and Simulation on Spectral Phase-Encoded OCDMA System (subscription required)

This paper analyzes the temporal behavior of pseudo-random code and the effects on a spectral phase-encoded time-spreading OCDMA System. A spectral phase-encoded time-spreading optical code division multiple access system designed by Optiwave’s Optisystem was demonstrated.

Characterization of the chirp in semiconductor laser under modulation (subscription required)

In this paper we present, shortly, a study of the chirp induced in direct modulated DFB laser. Our description of the chirp is based, first on analytical resolution of the rate equations, and second on a simulation of a heterodyne system with the Optisystem software.