Research on Optical Chaos and it's Applications in Semiconductor Lasers with Phase-Conjugate Optical Feedback

光学混沌及其在相位共轭光反馈半导体激光器中的应用研究

• 批准号: 10650040
• 负责人: OHTSUBO Junji
• 金额: $ 2.56万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650040/
• 关键词: Semiconductor lasers; Optical Chaos; Phase-Conjugate Optics; Nonlinear Optical Dynamics; Laser Control; Chaos Synchronizaiton; 戻り光

A semiconductor laser is destabilized easily by a feedback from an external reflector and the performance of a system employing a semiconductor laser as a light source is much degraded in the presence of optical feedback to the laser. This instability is derived from the nonlinear dynamics involved in the system and is known as chaos in the system. In the meantime, a semiconductor laser is used as a light source for phase-conjugate optics. The effects of Phase-conjugate feedback to a semiconductor laser are very important since the reflected light by a phase-conjugate mirror is automatically fed back to the light source. However, a few researches have been done in this area. In this project, the dynamics of semiconductor lasers with phase-conjugate feedback have been extensively investigated and the differences between feedback from phase-conjugate and ordinary mirrors have been clarified. Applications of phase-conjugate feedback in semiconductor lasers have been also investigated. As a result, effective laser control and noise suppression have been attained by phase-conjugate feedback. Chaos synchronization for secure communications has been studied and it has been proved that semiconductor laser with phase-conjugate feedback can be used as a high performance chaos generating module for chaos communication systems.

半导体激光器很容易因来自外部反射器的反馈而不稳定，并且在存在对激光器的光学反馈的情况下，采用半导体激光器作为光源的系统的性能大大降低。这种不稳定性源于系统中涉及的非线性动力学，被称为系统中的混沌。同时，半导体激光器被用作相位共轭光学的光源。相位共轭反馈对半导体激光器的影响非常重要，因为相位共轭镜的反射光会自动反馈回光源。然而，在这一领域已经进行了一些研究。在该项目中，对具有相位共轭反馈的半导体激光器的动力学进行了广泛的研究，并阐明了相位共轭反射镜和普通反射镜的反馈之间的差异。还研究了相位共轭反馈在半导体激光器中的应用。因此，通过相位共轭反馈实现了有效的激光控制和噪声抑制。对保密通信中的混沌同步进行了研究，证明具有相位共轭反馈的半导体激光器可以作为混沌通信系统的高性能混沌发生模块。

项目成果

大坪順次: "戻り光半導体レーザにおける光カオス"レーザ顕微鏡研究会第22回講演会論文集. 25-31 (1998)

Junji Otsubo：“返回光学半导体激光器中的光学混沌”激光显微镜研究组第 22 届会议论文集 25-31 (1998)。

Y.Ikuma, J.Ohtsubo: "Dynamics in Compound Cavity Semiconductor Lasers Induced by Small Exaternal Cavity Length Change"IEEE J. Quantim Electron.. Vol.34,No.7. 1240-1246 (1998)

Y.Ikuma、J.Ohtsubo：“由小外腔长度变化引起的复合腔半导体激光器的动力学”IEEE J. Quantim Electron.. Vol.34，No.7。

S-Y. Ye, J. Ohtsubo: "Suppress of Chaotic Oscillations in a Semiconductor Laser with Optical Feedback"Proc. JICAST '98/ CPST'98. 218-221 (1998)

S-Y。

Y.Ikuma, J.Ohtsubo: "Dynamics in Compound Cavity Semiconductor Lasers Induced by Small External Cavity Length Change" IEEE J.Quantum Electron.34・7. 1240-1246 (1998)

Y.Ikuma、J.Ohtsubo：“外部腔长度变化引起的复合腔半导体激光器的动力学”IEEE J.Quantum Electron.34・7（1998）。

Y. Ikuma, J. Ohtsubo: "Dynamics in Compound Cavity Semiconductor Lasers Induced by Small External Cavity Length Variation"Proc. of EOS Topical Meeting "Electromagnetic Optics" Cavity Length Variation. 55-56 (1998)

Y. Ikuma，J. Ohtsubo：“由小外腔长度变化引起的复合腔半导体激光器的动力学”Proc。