Experimental realisation of a double-core dispersion-compensating optical fibre for S-band optical communications

Experimental realisation of a double-core optical fibre having a dispersion of –1750 ps km^-1 nm^-1 at a wavelength of 1470 nm is reported. This is the highest negative dispersion ever reported in the S-band (1450 nm to 1530 nm). The double-core optical fibre is characterised in terms of geometrical parameters, attenuation measurement, MFD measurement, bend loss measurement, etc. This work will be useful for the S-band optical fibre communication.