Q. What are the different losses that take place in an optical fibre ?

Q. What are the different losses that take place in an optical fibre ?
:- (i) material absorption 
   (ii) scattering
   (iii) mode coupling
   (iv) Leaky modes
   (v) Bending
    (vi) Radiation induced attenuation
    (vii) Defective construction losses 
    (viii) Inverse square Law Losses 
    (ix) Transmission losses and
     (x) Core and cladding losses