scholarly journals Chaos characteristics of the semiconductor laser with double external cavity optical feedback

2009 ◽  
Vol 58 (9) ◽  
pp. 6058
Author(s):  
Zhao Yan-Feng
Keyword(s):  
Semiconductor Laser ◽  
Optical Feedback ◽  
External Cavity

scholarly journals Extracting the external-cavity key of a chaotic semiconductor laser with double optical feedback by spectrum analyzer

2012 ◽  
Vol 61 (3) ◽  
pp. 034211
Author(s):  
Liang Jun-Sheng ◽  
Wu Yuan ◽  
Wang An-Bang ◽  
Wang Yun-Cai
Keyword(s):  
Semiconductor Laser ◽  
Optical Feedback ◽  
External Cavity ◽  
Spectrum Analyzer

scholarly journals Time delay signature concealment of optical feedback induced chaos in an external cavity semiconductor laser

2010 ◽  
Vol 18 (7) ◽  
pp. 6661 ◽  
Author(s):  
Jia-Gui Wu ◽  
Guang-Qiong Xia ◽  
Xi Tang ◽  
Xiao-Dong Lin ◽  
Tao Deng ◽  
...  
Keyword(s):  
Time Delay ◽  
Semiconductor Laser ◽  
Optical Feedback ◽  
External Cavity

scholarly journals Routes to Chaos of a Semiconductor Laser Subjected to External Optical Feedback: A Review

Photonics ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 22 ◽  
Author(s):  
Alexandre Locquet
Keyword(s):  
Semiconductor Laser ◽  
Cavity Mode ◽  
Continuous Wave ◽  
Optical Feedback ◽  
External Cavity ◽  
Experimental Investigations ◽  
Optical Frequency ◽  
Cavity Modes ◽  
Feedback Strength ◽  
Feedback Level

This paper reviews experimental investigations of the route to chaos of a semiconductor laser subjected to optical feedback from a distant reflector. When the laser is biased close to threshold, as the feedback strength is increased, an alternation between stable continuous wave (CW) behavior and irregular, chaotic fluctuations, involving numerous external-cavity modes, is observed. CW operation occurs on an external-cavity mode whose optical frequency is significantly lower than that of the solitary laser. The scenario is significantly different for larger currents as the feedback level is increased. At low feedback, the laser displays periodic or quasiperiodic behavior, mostly around external-cavity modes whose frequency is slightly larger than that of the solitary laser. As the feedback level increases, the RF and optical frequencies involved progressively lock until complete locking is achieved in a mixed external-cavity mode state. In this regime, the optical intensity and voltage oscillate at a frequency that is also equal to the optical frequency spacing between the modes participating in the dynamics. For even higher feedback, the locking cannot be maintained and the laser displays fully developed coherence collapse.

scholarly journals Inducing tunable single-mode operation of Fabry-Perot semiconductor laser coupled with very-short cavity with selective optical feedback

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Mohammed S. Al-Ghamdi ◽  
Ahmed Bakry ◽  
Moustafa Ahmed
Keyword(s):  
Semiconductor Laser ◽  
Continuous Wave ◽  
Optical Feedback ◽  
External Cavity ◽  
Single Mode ◽  
Modal Gain ◽  
Central Wavelength ◽  
Single Mode Operation ◽  
Mode Operation ◽  
Mode Oscillation

Abstract We report on achieving tuned single mode operation of a multimode semiconductor laser by coupling it to a very-short external cavity with selective feedback. We show that the induced uniform feedback light from the very-short external cavity can induce single-mode oscillation over a broad range of optical feedback. Then by applying selective external to the optimum settings of the single-mode oscillation, we predict tuning of the single-mode output over a wavelength range of ~ 20 nm by detuning the peak wavelength of optical feedback from the central wavelength of the modal gain. The study is based on modeling of the dynamics of multimode semiconductor laser subject to selective optical feedback. The model takes into account mechanisms of both self- and cross-modal gain suppression, and the study is concerned with the very-short external cavity that corresponds to stable continuous-wave (CW) operation.

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