Controlling a chaotic anti-synchronized oscillator by a phase interplayed optical injected seed with an FBG sensor

Abstract

Abstract In this simmulation study, a fiber Bragg grating (FBG) sensor is used to partially separat a signal emitted from a laser diode (LD1), which is originally modulated with a noise source. Separation done into two parts; reflected, in which a phase is interpayed (similarly to Michelson interferometry) in order to make it differ than that passed without reflection. The two separated signals, remixed agin with themselves and additionally add to a third signal came from second laser diode (LD2), which is also modulated with a noise source furthermore to a frequency message. Output signal resulted from this interferometry, originally based on two self electro optic effect devices (seed) undergoes external optical injection. Thus these two osillators followes anti-synchronization within their emission. Observation and analyses was based on detremination for their final output spectra from periodic to chaotic. FBG sensor used in this experiment is play a role of temperature (T) and/or Stress (S) controlling to the incident signal for LD1. Results shows that LD1 signal cannot modify output final signal, unless several parameters are carfuley tuned. These parameters are; LD1 seed, LD2 seed, LD1 phase (filtering with FBG). These results approves noval application for operating sensors in parallel to optical communications in order to satisfy the application of high level security with two antisynchronized lasers within one chaotic transmitter.