Patent ID: 11921366
Assignee: CORNING INCORPORATED
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A multicore optical fiber comprising:
a plurality of cores disposed in a cladding, wherein:
the plurality of cores comprise a first core, a second core, and a third core;
the first core comprises a first propagation constant β1, the second core comprises a second propagation constant β2, the third core comprises a third propagation constant β3, the cladding comprises a cladding propagation constant β0, and, 
        
          
            β
            1
          
          -
          
            β
            2
          
        
        
      
      
        
        
          
            β
            2
          
          -
          
            β
            0
          
        
        
      
    
    <
    
      1
      2
    
  
  ;

the first core and the second core comprise a modal mismatch M12;, M
    12
  
  =
  
    
      
      
        
          β
          1
        
        -
        
          β
          2
        
      
      
    
    
      2
      ⁢
      
        C
        12
      
    
  

 where C12 is a coupling coefficient for coupling from the first core to the second core; and
M12 is greater than 10.