Specialty Optical Fibers Handbook

The Raman-Kerr scattering process is perhaps the most widely studied optical

effect with liquid-core fibers. Upon theoretical modeling, it has been possible to

identify the requirements to observe this process [38]: (1) The molecules of the

liquid Kerr medium must be anisotropic, (2) liquid samples must be transparent

or have a small loss factor, (3) pump intensity must be sufficiently high, and

(4) the gain length must be long enough. All these requirements can be fulfilled

with a liquid-filled hollow fiber. Kerr liquid-filled hollow-fiber system can, thus,

be used as a broadband, multiwavelength coherent light source with spectral and

temporal feature that can be tailored for specific requirements. A clear example

of this is shown in He et al.