Title : 
Cutoff frequencies of a parabolic-core W-type fibre
         
        
            Author : 
Kumar, Arun ; Chandra, Ram ; Sammut, R.A. ; Ghatak, A.K.
         
        
            Author_Institution : 
Indian Institute of Technology, Department of Physics, New Delhi, India
         
        
        
        
        
        
        
            Abstract : 
The cutoff frequencies of guided modes in a weakly guiding W-type fibre with parabolic core profile have been obtained. It is found that the cutoff frequency of the TE01-mode in such a fibre is much higher than for a homogeneous-core W-type fibre. This should allow greater ease in splicing.
         
        
            Keywords : 
optical fibres; optical waveguide theory; cutoff frequencies; guided modes; parabolic core profile; splicing; weakly guiding W-type fibre;
         
        
        
            Journal_Title : 
Electronics Letters
         
        
        
        
        
            DOI : 
10.1049/el:19780453