Nonlinear effects of multi-wavelength fiber laser and four wave mixing signals generation in few mode fiber and highly nonlinear fiber

Jamaludin, Junaidi (2017) Nonlinear effects of multi-wavelength fiber laser and four wave mixing signals generation in few mode fiber and highly nonlinear fiber. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

This thesis presents a study of nonlinear effects in few mode fiber (FMF) and highly nonlinear fiber (HNLF). The signal generation of multi-wavelength fiber laser (MFL) and four wave mixing (FWM) signals had been demonstrated in a 500 m of each FMF and HNLF. This study performs an MFL signal in a closed loop laser cavity incorporated with a passive erbium doped fiber amplifier (EDFA) and a Sagnac loop filter. A linear laser cavity with high power erbium doped fiber amplifier (HPEDFA) is utilized to perform signal generation of FWM. The formation of MFL signal in HNLF and FMF was discovered at 197 mW of EDFA output power with dual wavelength laser signals was observed in HNLF and triple wavelength laser signals has been observed in FMF. For HNLF, the first peak was observed at 1558.77 nm with -12.83 dBm peak power. The secondary peak was observed at 1561.27 nm with -13.16 dBm of peak power. For FMF, the first peak was at 1558.36 nm with -20.41 dBm peak power. The secondary peak was at 1560.94 nm with peak power of -9.44 dBm. The third peak was at 1563.57 nm and at -36.53 dBm of peak power. The signal generation of FWM in HNLF and FMF was performed at 398 mW output power of EDFA. For HNLF, as the pump peak was at 1551.09 nm and probe peak at 1552.06 nm, the first idler was discovered at 1550.13 nm with -51.25 dBm peak power. The secondary idler was obtained at 1553.02 nm with -52.03 dBm peak power. The generated signal of FWM in FMF was observed during the pump peak at 1550.68 nm and pump probe was at 1551.82 nm, first idler was formed at 1545.52 nm with -62.25 dBm peak power. The secondary idler was formed at 1552.98 nm with -60.91 dBm of peak power. The insertion of polarization controller in laser cavity generates low noise MFL signals. Greater suppression of the scattering phenomena in optical fiber should be taken into account in order to generate high OSNR of FWM signal.

Item Type:Thesis (Masters)
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-5865 Telecommunication. Telegraph.
ID Code:9930
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:01 Apr 2018 12:06
Last Modified:01 Apr 2018 12:06

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