研究目的
To propose and fabricate a graphene and optical microfiber coupler (OMC) integrated device (GOMC) for the development of adjustable multi-wavelength fiber lasers.
研究成果
The GOMC-based fiber laser achieved stable, intensity-tunable, multi-wavelength-tunable laser output with a 3 dB linewidth of less than 30 pm, a signal-to-noise ratio of approximately 40 dB, and an output power fluctuation of less than 1 dB. The GOMC can be used for the development of functional devices like adjustable mode lockers and mode coupling selectors, providing an excellent experimental platform for new fiber lasers and multi-dimensional light-field manipulation research.
研究不足
The insertion loss of the GOMC device was about 3 dB, which could be improved by optimizing the OMC parameter structure and removing impurities from the graphene. The laser cavity loss was still large, affecting the output efficiency.
1：Experimental Design and Method Selection:
The GOMC was fabricated by integrating OMC with graphene, enhancing its polarization dependence and giving it filtering, coupling, beam splitting, and polarization correlation capabilities.
2：Sample Selection and Data Sources:
The OMC was fabricated by fusing and tapering two twisted conventional communication fibers. Graphene was mechanically transferred to the surface of MgF2 on a glass slide.
3：List of Experimental Equipment and Materials:
Equipment included a 980-nm laser diode, optical spectrum analyzer (OSA), polarization controller (PC), and erbium-doped fiber (EDF). Materials included graphene, MgF2, and conventional communication fibers.
4：Experimental Procedures and Operational Workflow:
The GOMC was integrated into the ring cavity of a fiber laser to achieve single-wavelength and multi-wavelength regulated output.
5：Data Analysis Methods:
The output spectrum of the laser was analyzed using an OSA to determine the 3 dB linewidth, signal-to-noise ratio, and output power fluctuation.
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