Author/Authors :
shahi, sharife islamic azad university, isfahan (khorasgan) branch - laser and biophotonics in biotechnologies research center - department of biomedical engineering, Isfahan, iran , soudi, sasan islamic azad university, isfahan (khorasgan) branch - laser and biophotonics in biotechnologies research center, Isfahan, Iran , soudi, sasan islamic azad university, tehran medical sciences - faculty of health and medical engineering - department of medical engineering, Tehran, Iran , ghorbani, yalda islamic azad university, majlesi branch - faculty of electrical and computer engineering, Isfahan, Iran , ghorbani, yalda islamic azad university, isfahan (khorasgan) branch - laser and biophotonics in biotechnologies research center, Isfahan, Iran , khaksar jalali, bahareh islamic azad university, isfahan (khorasgan) branch - laser and biophotonics in biotechnologies research center, Isfahan, Iran , harun, sulaiman wadi university of malaya - faculty of engineering - department of electrical engineering, Kuala Lumpur, Malaysia
Abstract :
Four-wave mixing is one of the major degradation effects in fiber optic systems with dense channel spacingand low chromatic dispersion on the fiber. In the long-distance wavelength-division multiplexing (WDM) opticalcommunication system, the cross talk generated from four-wave mixing in optical fibers limits the performanceof the system, which can be controlled for non-linearity purposes in optical telecommunication, especially thechannel wavelengths are set near the zero-dispersion wavelength of optical fibers. Hence, a very short fibersegment with an ultrahigh non-linearity is useful to support the FWM. In this paper, the experimental set-upof compact fiber ring laser based different lengths of nonlinear Bismuth- Erbium doped fiber (Bi-EDF, 181 and215 cm) is employed by using four-wave mixing (FWM) method. These two gain nonlinear media have beensuccessfully used to stabilize a dual-wavelength fiber laser with and without nonlinear photonic crystal fiber(PCF) at room temperature through the degenerate four-wave mixing effect for γ and n2 estimation of non-linearparameters and FWM efficiency of optical fiber. The exclusive and practical benefits of using the high non-linearbismuth-erbium doped fiber (Bi-EDF) in implementing a FWM applications for non-linear PCF parameters areexperimentally demonstrated. Besides, the FWM effect can be also employed for signal amplification, phaseconjugation, wavelength conversion ,and high-speed optical switching. Coupled interaction of Bi-EDF and PCFfiber in FWM scattering explain the unique feature of the proposed configuration.
Keywords :
Bi , EDF , Four , wave mixing , Photonic crystal fiber , Non , linear optics
