This work presents a comprehensive study of the four wave mixing (FWM) effect in the highly nonlinear fibre (HNLF) and semiconductor optical amplifier (SOA); and their applications. The nonlinearity parameters such as zero-dispersion wavelength (ZDW), chromatic dispersion (CD) and nonlinear coefficient of HNLF has successfully investigated by using several FWM techniques. Results from all techniques have been achieved approximately similar to the manufacturer specification. This technique is then employed for the measurement of the FWM power and FWM efficiency in a SOA, in addition to the...

Zirconia-Erbium doped Fibers are a novel type of highly-doped fiber that allows high erbium ion concentrations to be realized in a short length of fiber without the detrimental effects of ion clustering and concentration quenching. The fiber has a multitude of novel applications, including the generation of compact optical amplifiers and single-longitudinal mode lasers. A particularly interesting application of the fiber is the development of compact fast and ultrafast pulse lasers together with carbon allotropes as passive saturable absorbers. This new systems will have high potential for a...