Generation of dual-wavelength EDFL by using S-M-S fiber structure as a comb filter based on mach–zehnder interferometer

Jose, Jonathan (2023) Generation of dual-wavelength EDFL by using S-M-S fiber structure as a comb filter based on mach–zehnder interferometer. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This experiment demonstrates a dual-wavelength fiber laser using S-M-S fiber structure. The ring laser cavity is integrated with a 2.4m Erbium Doped Fiber (EDFL) and a 6.6m single-mode fiber cavity. The developed fiber structure has a 22cm long multimode fiber with an insertion loss of 15 dB. The total dual wavelength of the ring laser cavity is 9.22m. Once the S-M-S fiber structure is integrated into the ring laser cavity, the slope efficiency drops from 11.6% to 0.21%. The stable peak wavelength at 1558nm and 1561nm are obtained within 39mW to 137mW pump power. Stable pulse train presence at a fundamental frequency of 24Mhz with a 33dB signal-to-noise ratio. The S-M-S structure has the potential to work as a comb filter for microwave source generator applications.

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