Study on Mutual Injection Locking in Multi-Longitudinal-Mode Semiconductor Lasers and Its Applications

多纵模半导体激光器互注入锁定及其应用研究

• 批准号: 14550042
• 负责人: MORI Masakazu
• 金额: $ 1.41万
• 依托单位: Aichi Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550042/
• 关键词: All Optical Mode-Locking; Fabry-Perot Laser Diode; Spectral Linewidth Reduction; External Cavity; SELFOC lens; Four-Wave Mixing; Mutual Injection Locking; Polarization; Fabry-Perot型半導体レーザ

Firstly, methods to realize all optical mode-locking irrespective of lasing characteristics of Fabry-Perot laser diodes (F-P LDs) are experimentally investigated using F-P LDs whose cavity lengths are 300μm, 370μm, and 900μm. Secondly, optimal conditions for facet reflectivities are studied. The dependence on the polarization direction of the cw injected light is also investigated. Thirdly, division and multiplication of repetition frequencies of mode-locked pulse trains is studied using the phaselock loop model.The following results are obtained.(1)To reduce spectral linewidths, two methods are promising. With these methods, yield rate of all optical mode locking is increased.・ A method to utilize SELFOC lenses as external cavities.・ A method to utilize reflections at far ends of short fiber pig-tails coupled to rear facets of LDs.(2)The optimal facet treatment for all optical mode locking is AR coated-as cleaved (AR-CL).(3)The four-wave-mixing components generated in F-P LDs have only TB components independent of the polarization of the cw injected light.(4)Division/multiplication of repetition frequencies of mode-locked pulse trains is possible based on mutual injection locking and injection locking among longitudinal modes in F-P LDs.

首先，实验研究了腔长分别为300μm、370μm和900μm的法布里-珀罗激光二极管(F-P LD)实现全光锁模的方法，并研究了小面反射率的最佳条件。研究了连续波注入光偏振方向的变化规律。第三，利用锁相环模型研究了锁模脉冲序列重复频率的除法和乘法，得到了以下结果：(1)为了减小谱线宽，有两种方法是很有前途的。采用这些方法，提高了全光锁模的成品率。·一种利用SELFOC透镜作为外腔的方法。(2)全光锁模的最佳小面处理是AR涂层-AS分裂(AR-CL)。(3)在F-P激光器中产生的四波混频分量只有Tb分量，与连续注入光的偏振无关。(4)基于F-P激光器中纵模之间的互注入锁定和注入锁定，锁模脉冲串的重复频率是可能的。

项目成果

M.Mori, M.Matsunaga, M.Hamada, N.Nishizawa, T.Goto, R.Goto, D.Maruhashi: "Ring Length Control of Harmonically Mode-Locked Fiber Ring Lasers"Bulletin of Aichi Institute of Technology. vol.39-B (in press). (2004)

M.Mori、M.Matsunaga、M.Hamada、N.Nishizawa、T.Goto、R.Goto、D.Maruhashi：“谐波锁模光纤环形激光器的环长控制”爱知工业大学通报。

M.Mori, M.Hamada, M.Matsunaga, N.Nishizawa, T.Goto, R.Goto, D.Maruhashi: "Polarization Characteristics and Spectral Linewidth Reduction in All-Optical Mode Locking of Fabry-Perot Laser Diodes by cw Light Injection"Bulletin of Aichi Institute of Technology

M.Mori、M.Hamada、M.Matsunaga、N.Nishizawa、T.Goto、R.Goto、D.Maruhashi：“连续光法布里-珀罗激光二极管全光模式锁定的偏振特性和光谱线宽减小

森正和, 濱田正敏, 松永雅規, 西澤典彦, 後藤俊夫, 後藤了祐, 丸橋大介: "cw光注入によるFabry-Perot LDの全光制御モード同期における偏波特性とスペクトル線幅の狭窄化"愛知工業大学研究報告. 39号B(未定). (2004)

Masakazu Mori、Masatoshi Hamada、Masanori Matsunaga、Norihiko Nishizawa、Toshio Goto、Ryosuke Goto、Daisuke Maruhashi：“通过连续光注入法布里-珀罗 LD 全光控制锁模中的偏振特性和光谱线宽变窄” 爱知县工业技术研究所技术研究报告第 39B 号（待定）（2004 年）。

森正和, 濱田正敏, 松永雅規, 西澤典彦, 後藤俊夫, 後藤了祐, 丸橋大介: "cw光注入によるFabry-Perot LDの全光制御モード同期における偏波特性とスペクトル線幅の狭窄化"愛知鉱業大学研究報告. 39号B(印刷中). (2004)

Masakazu Mori、Masatoshi Hamada、Masanori Matsunaga、Norihiko Nishizawa、Toshio Goto、Ryosuke Goto、Daisuke Maruhashi：“通过连续光注入法布里-珀罗 LD 全光控制锁模中的偏振特性和光谱线宽变窄”爱知大学采矿研究报告第 39B 号（印刷版）（2004 年）。

森正和, 舟橋勝雄, 西澤典彦, 後藤俊夫, 後藤了祐, 山根一雄: "光ディジタル信号のパワースペクトル密度解析"愛知工業大学研究報告. 38号B(未定). (2003)

Masakazu Mori、Katsuo Funahashi、Norihiko Nishizawa、Toshio Goto、Ryosuke Goto、Kazuo Yamane：“光数字信号的功率谱密度分析”爱知工业大学研究报告第 38B 号（待定）。