Acta Optica Sinica, Volume. 32, Issue 12, 1214001(2012)
Investigation on the Bistability Performances of Vertical-Cavity Surface-Emitting Lasers with Time-Varying Orthogonal Optical Injection Subject to Weak Optical Feedback
Based on the framework of the spin-flip model (SFM), the bistability performances of time-varying orthogonal optical injected vertical-cavity surface-emitting lasers (VCSEL) subject to weak optical feedback have been investigated theoretically. The results show that, for a slave VCSEL (S-VCSEL) subject to time-varying orthogonal optical injection from a master VCSEL (M-VCSEL), the introduction of weak optical feedback does not change the varied trend that hysteresis width increases with the increase of the sweeping rate of optical injection coefficient. For a fixed sweeping rate of the injection coefficient, with the increase of the feedback strength, the hysteresis width will narrow. Under the case that there exists frequency detuning Δν(=νm-νs, νm and νs are the free running frequencies of M-VCSEL and S-VCSEL, respectively) between the M-VCSEL and S-VCSEL, with the increase of Δν from negative value to positive value, the hysteresis width narrows firstly, and after reaching a minimum, widens finally. The obvious fluctuation of hysteresis width appearing in the negative frequency detuning region can be suppressed to some extent after introducing optical feedback.
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Li Xiaojian, Wu Zhengmao, Deng Tao, Zheng Anjie, Xia Guangqiong. Investigation on the Bistability Performances of Vertical-Cavity Surface-Emitting Lasers with Time-Varying Orthogonal Optical Injection Subject to Weak Optical Feedback[J]. Acta Optica Sinica, 2012, 32(12): 1214001
Category: Lasers and Laser Optics
Received: Jun. 7, 2012
Accepted: --
Published Online: Sep. 14, 2012
The Author Email: Xiaojian Li (muzi198701@126.com)