Experimental Design for Laser Wavelength Tuning by Mixed Feedback and Injection | Chapter 9 | New Trends in Physical Science Research Vol.5

 It is carried out an experimental validation of a novel simple technology for narrow-linewidth and wavelength-tunable lasers. The technology relies on nonlinearities that arise from a combination of laser optoelectronic feedback (OEFB) and optical injection (OI). The major impact detected and controlled from many nonlinearities is Mode Hopping (MH). By combining these two effects, it was possible to change the chaotic effects' beginning circumstances. It raises the modulation index of the slave laser to 100% and uses the MH produced in it to tune the output lasing frequency. Controlling either master laser detuning or injection strength, or both, is how this is performed. Injecting a nonlinear function into the detected signal and modifying the slave laser OEFB time delay (through a variable attenuator) or (and) nonlinear contribution The results demonstrate that a simpler setup is possible without the need of a Fiber Bragg Grating filter, which is a standard approach for creating a tunable laser.

Author(s) Details:

Rasha Salah Abbas,
Department of Physics, College of Education, Mustansiriyah University, Baghdad, Iraq and First Karkh Directorate of Education, Ministry of Education, Iraq.

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

Please see the link here: https://stm.bookpi.org/NTPSR-V5/article/view/7165