Abstract
In this work, the external switching dynamics of a Fabry-Perot etalon are studied via optical bistability system simulation. The simulated set-up of this investigation consists of two laser beams; the first beam is continuous (CW) which is considered as a biasing beam and capable of holding the bistable system for a certain range, which we are interested in, from a point that is very close self-switching to a point where the switching is unachievable. The second beam is modulated by passing the first beam through an acousto-optic modulator (AOM) to produce pulses with a minimum rise time and is used as an external source (coherent switching). In this work, we obtained the optical bistable loops by applying absorption coefficient (α) = 20cm-1, e sample etalon thickness (D) = 110μm, forward mirror reflectivity (Rf) = 0.6, and backward mirror reflectivity (Rb) = 0.95. The steady state characteristic of an initial detuning of the cavity (φ0) = 0.8 was studied at the conditions of no external input pulse intensity (M(t) = 0) and switching that takes place at Is(ON)= 0.57mW and Is(OFF) = 0.4mW.
Highlights
The phenomenon of optical bistability (OB) is interesting both in the physical systems involved and in light of potentially exciting applications
Optical hysteresis in cavities containing gain media are not considered within the current discussions even though some of them were proposed and observed earlier
The switching of the devices in either direction of ON or OFF with external pulses and keeping the input intensity constant is very desirable in many applications
Summary
The phenomenon of optical bistability (OB) is interesting both in the physical systems involved and in light of potentially exciting applications. ديظاميكية التحويل الخارجي لطحاكاة نظام بصري ثظائي الاستق اررية
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