Chaotic Dynamics for Laser Diode under Unidirectional and Mutual Optical Injection with Optoelectronic Feedback| Chapter 9 | Current Overview on Science and Technology Research Vol. 8

 Nonlinear and anarchic dynamics for a continuous diffusion (CW) laser diode accompanying a Fabry-Perot cavity are being investigated tentatively to develop a new turbulent transmitter system. Uni-directional and bi-directional optical needle configurations were constructed accompanying and without optoelectronic feedback (OEFB) and even direct timbre. Another possibility is too investigated, where the needle is reversed to note dynamics generated in the second ray of light diode (LD2). Accordingly, the first laser diode (LD1) receives ocular injection from LD2, that is initially mixed with self-OEFB, and before, LD2, under OEFB, receives clean optical injection from LD1. Results signify the generation of turbulent pulsation with fashion hopping in the first arrangement and mode-lock at a specific bias current level in the second individual.Under bi-directional optical injection, results show that the ray of light entered a new inconstancy leading to a variety of more nonlinearities. One of bureaucracy is the lasing mode switching and switching. The ratio of OI was conditional an optical attenuator and again OEFB by an RF attenuator. Mode hopping, multimode emission, fad lock, and chaotic demeanor are all observed experimentally equivalent to operating conditions. The noticed chaotic pulse linewidth was calculated at 300 MHz, with the ability expected broader by way of changing detuning and injection percentage. The laser altered to emit in pulsation accompanying a route to chaos rank in which it has an FWHM of around 0.1GHz. Reversing dose led to linewidth augmentation with a very sharp FWHM, 1.5 kHz. Laser emission is troubled due to mixed dose as if it works accompanying OEFB, where the gain switches tend to drive the ray of light into pulsing states inferred by that positive OEFB. For each achieved result, skilled exists an use, such as; chaos shifts keying, commonness mixing, and up-adaptation to a new frequency to reduce the cost of speedy electronics guide optical communications.

Author(s) Details:

Ayser A. Hemed,
Department of Physics, College of Education, Mustansiriyah University, Baghdad, Iraq.

Rasha Salah Abbas,
First Karkh Directorate of Education, Ministry of Education, Baghdad, Iraq.

Please see the link here: https://stm.bookpi.org/COSTR-V8/article/view/8666