Chaos Bandwidth Enhancement of Fabry–Pérot Laser Diode With Dual-Mode Continuous-Wave Optical Injection

Abstract

We show numerically that dual-mode continueswave optical injection into a Fabry-Pérot laser diode subject to optical feedback generates a chaos bandwidth which is four to six times that without optical injection. As a comparison, it is shown that single-mode optical injection can increase the chaos bandwidth threefold with careful choice of detuning. Any combination of dual-mode injection will further enhance the chaos bandwidth and especially for strong injection and over relatively large positive detuning ranges. Even when the bias current of the Fabry-Pérot laser diode is relatively low, the bandwidth of chaos can reach 35 GHz after dual-mode optical injection, which is six times that without optical injection. The enhanced bandwidth with dual-beam optical injection is in accordance with our previous experiments [25]. The present simulations provide detailed guidance on the choice of experimentally accessible parameters to generate chaotic signals with enhanced bandwidth by using single or dual-beam optical injection into a Fabry-Pérot laser diode with optical feedback.

Review on the broadband time‐delay‐signature‐suppressed chaotic laser

“…The corresponding theoretical research showed that this method can be used to achieve a high bandwidth chaotic signal in a wider range of parameters in 2019. 55 Jiang et al used an external-cavity semiconductor laser (ECSL) to obtain a broadband chaotic signal from the selfphase modulated optical injection structure experimentally in 2020. 57 The experimental setup is shown in Figure 2 (B1).…”

“…44 The flatness refers to the range of spectrum fluctuation within the bandwidth. In order to eliminate the influence of relaxation oscillation frequency on the bandwidth and flatness of chaotic laser, researchers have carried out extensive studies, including improved optical feedback, [45][46][47][48][49][50] unidirectional optical injection, [51][52][53][54][55][56][57][58][59] mutual injection, 60,61 and subsequent processing 62,63 of chaotic laser.…”

“…By adjusting the frequency detuning and the injected optical power, a broadband chaotic laser with a standard bandwidth of 32.3 GHz was generated, as shown in Figure 2 (A2). The corresponding theoretical research showed that this method can be used to achieve a high bandwidth chaotic signal in a wider range of parameters in 2019 55 …”

Characterizing Extreme Events in a Fabry–Perot Laser with Optical Feedback

“…Based on expanding Lang-Kobayashi equations [24], an FP laser subjected to optical feedback can be described as [25,26]:…”

A Multiple-Input Multiple-Output Reservoir Computing System Subject to Optoelectronic Feedbacks and Mutual Coupling

“…The higher dimensional computation for the emerging artificial intelligence can be realized due to RC with the simple hardware structure and the short-time training algorithm. Compared with the approach of realizing artificial neural networks on a personal computer by a software, the RC can be implemented by hardware and can improve the performance of traditional artificial neural networks [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ].…”