3.0 μm~4.0 μm OMNIDIRECTIONAL REFLECTOR
 
                 
                
                    
                                        
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Graphical Abstract
 
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Abstract
    The photonic band gap of one dimensional photonic crystal and the properties of the forbidden band are analyzed.The 3.0~4.0 μm omnidirectional reflector is designed by making use of the properties of the forbidden band and provides the spectrum of reflectance.
 
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