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.