Correlation Domain Spectroscopy by Frequency-Chirped Light

频率啁啾光的相关域光谱

• 批准号: 10450031
• 负责人: ITO Hiromasa
• 金额: $ 9.02万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 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-10450031/
• 关键词: Frequency-shifted Feedback Laser; Frequency chirp; Spectroscopy; 相関関数

In this research, a new technique in spectroscopy ; correlation domain spectroscopy was studied as an application of a frequency-shifted feedback laser. The main outcomes of the research are following.1. Correlation domain spectroscopy, theory and experiment.A theoretical analysis is developed for a measurement of a impulse response of a sample by a continuous wave light. The technique was named the correlation domain spectroscopy. To demonstrate the correlation domain spectroscopy, a frequency-shifted feedback laser was used as a frequency-chirped light source, because the frequency-chirp of the laser output is highly linear. In the experiment, an impulse response of an optical fiber loop was measured. We succeeded to measure the impulse response with a temporal resolution of 5 ns. Since the technique uses the continuos wave light, it is possible to measure the materials with low optical damage threshold such as biological samples.2. Measurement of dispersion of optical fiberA frequency-shifted feedback laser with an erbium doped fiber as a gain medium. The advantage of the laser is a wide wavelength tunable range. The wavelength was tuned by varying the driving frequency of the intracavity acoustooptic modulator, and 10 nm tuning range was obtained. The another advantage is that the laser oscillates at 1.55 μm which is the wavelength of the optical communication. Combining these advantages, we have proposed and demonstrated a measurement of the group velocity dispersion and polarization mode dispersion of an optical fiber by use of the frequency-shifted feedback laser. In the experiment, the group velocity dispersion and the polarization mode dispersion were measured with resolutions of 0.1 ps/nm/km and 0.01 ps, respectively.

在这项研究中，研究了相关域的新技术。开发的。由于该技术的时间分辨率为5 n，因此可以使用低光损伤阈值（例如生物样品）是可调型的波长可调范围。 Ofe的一些偏移反馈激光器分别以0.1 / / / / nm / km和0.01 PS的分辨率测量了组速度处置和极化模式。

项目成果

Koichiro Nakamura, Takefumi Hara, Masato Yoshida, and Hiromasa Ito: "Improvement of the measurement range of optical frequency domain reflectometry by a frequency-shifted feedback laser"1999 Conference on Lasers and Electro-Optics. CMD8. 19-20, Baltimore

Koichiro Nakamura、Takefum​​i Hara、Masato Yoshida 和 Hiromasa Ito：“通过频移反馈激光器改善光学频域反射测量范围”1999 年激光和电光会议。

Koichiro Nakamura: "Observation of a highly Phase-correlated chirped frequency comb out put from a frequency-shifted feedback laser"Applied Physics Letters. 72. 2631-2633 (1998)

Koichiro Nakamura：“从频移反馈激光器输出的高度相位相关的啁啾频率梳的观察”应用物理快报。

Masato Yoshida,Kouichiro Nakamura, Hiromasa Ito: "Effect group velocity dispersion of optical frequency domain reflectometry"Conference on Lasers and Electro-Optics '99. 388-389 (1999)

Masato Yoshida、Kouichiro Nakamura、Hiromasa Ito：“光频域反射计的群速度色散效应”激光与光电会议99。

Koichiro Nakamura and Hiromsa Ito: "A novel technique for impulse response measurement ; Correlation domain spectroscopy"1998 European Quantum Electronics Conference. QWC43. 134, Glasgow (1998)

Koichiro Nakamura 和 Hiromsa Ito：“脉冲响应测量的新技术；相关域光谱”1998 年欧洲量子电子会议。

Kumio Kasahara: "Dynamic Properties of All Solid-State Freguency-Shifted Feedback Laser"IEEE Journal of Quautum Electronics. 34. 190-203 (1998)

Kumio Kasahara：“全固态频移反馈激光器的动态特性”IEEE 量子电子杂志。