光学                        
                
                                
                        
                            材料科学                        
                
                                
                        
                            波长                        
                
                                
                        
                            芯(光纤)                        
                
                                
                        
                            谐振器                        
                
                                
                        
                            衰减                        
                
                                
                        
                            激光器                        
                
                                
                        
                            半径                        
                
                                
                        
                            耦合损耗                        
                
                                
                        
                            纤维                        
                
                                
                        
                            模式音量                        
                
                                
                        
                            光纤                        
                
                                
                        
                            光电子学                        
                
                                
                        
                            色散位移光纤                        
                
                                
                        
                            光纤传感器                        
                
                                
                        
                            物理                        
                
                                
                        
                            计算机科学                        
                
                                
                        
                            计算机安全                        
                
                                
                        
                            复合材料                        
                
                        
                    
            作者
            
                Dakun Wu,Fei Yu,Cheng Wu,Meng Zhao,Jinhu Zheng,Lili Hu,J. C. Knight            
         
                    
            出处
            
                                    期刊:Optics Express
                                                         [Optica Publishing Group]
                                                        日期:2023-06-13
                                                        卷期号:31 (13): 21870-21870
                                                        被引量:3
                                 
         
        
    
            
        
                
            摘要
            
            In this work, multi-mode anti-resonant hollow-core fiber (AR-HCF) with 18 fan-shaped resonators is fabricated and characterized. The ratio of core diameter over transmitted wavelengths in the lowest transmission band is up to 85. The measured attenuation at 1 µm wavelength is below 0.1 dB/m and the bend loss below 0.2 dB/m at a bend radius smaller than 8 cm. Modal content of the multi-mode AR-HCF is characterized using the S2 imaging technique and seven LP-like modes in total are identified using a 23.6 meter fiber length. Multi-mode AR-HCFs for longer wavelengths are fabricated by scaling up the same design, extending the transmission window beyond 4 µm wavelength. Low-loss multi-mode AR-HCF could find applications in the delivery of high-power laser light with a medium beam quality, where higher coupling efficiency and laser damage threshold are expected.
         
            
 
                 
                
                    
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