研究目的
Investigating the use of a chirped phase mask interferometer for the inscription of fiber Bragg grating arrays with nonhomogeneous periods, focusing on the method's dependence on the coherence properties of the inscription laser.
研究成果
The chirped phase mask interferometer is effective for inscribing chirped fiber Bragg gratings with good wavelength versatility, especially when the coherence properties of the laser are considered. The method shows potential for applications requiring broad bandwidth reflection gratings, such as resonator mirrors for fiber laser setups and special filters for biophotonic applications.
研究不足
The study is limited by the coherence properties of the inscription lasers, which affect the maximum effective length of the chirped fiber Bragg gratings and their reflection bandwidth. The spatial and temporal coherence lengths of the lasers constrain the achievable grating lengths and spectral widths.
1：Experimental Design and Method Selection:
The study employs a phase mask inscription technique with two-beam interferometry using a lateral nonhomogeneous beam splitter to create chirped fiber Bragg gratings.
2：Sample Selection and Data Sources:
Inscription experiments are conducted with deep ultraviolet excimer and femtosecond laser sources on hydrogen-loaded commercial single-mode fibers.
3：List of Experimental Equipment and Materials:
Includes a Mantis-Legend Elite-Tripler femtosecond laser from Coherent Inc. and a Compex 150 T KrF excimer laser from Lambda Physics, now Coherent.
4：Experimental Procedures and Operational Workflow:
The method involves using a chirped phase mask as a beam-splitter to create a continuously chirped interference pattern, with the fiber placed perpendicularly to the optical axis.
5：Data Analysis Methods:
The spectral reflection bandwidth and group delay of the gratings are measured to assess the method's effectiveness.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
