Journal
SENSORS
Volume 22, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/s22030963
Keywords
distance sensing; semiconductor laser; optical feedback; laser dynamics; Hopf-bifurcation
Ask authors/readers for more resources
In this study, a novel distance sensing method using a semiconductor laser with optical feedback is proposed. By switching between two nonlinear dynamic states, the laser intensity can be modulated in a square wave form, enabling long-distance sensing. This method offers higher flexibility and reliability compared to existing systems.
In this study, a novel distance sensing method is presented by using a semiconductor laser (SL) with optical feedback (OF) and operating the SL at a switching status happened between two nonlinear dynamic states (stable state and period-one state). In this case, without the need for any electronic or optical modulation devices, the laser intensity can be modulated in a square wave form due to the switching via utilizing the inherent SL dynamics. The periodicity in the switching enables us to develop a new approach for long-distance sensing compared to other SL with OF-based distance measurement systems and lift the relevant restrictions that existed in the systems. Moreover, the impact of system controllable parameters on the duty cycle of the square wave signals generated was investigated on how to maintain the proposed system robustly operating at the switching status. Both simulation and experiment verified the proposed sensing approach.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available