Browsing by Author "Chen, H. -R."

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Generation of optical waveforms in 1.3-mu m SOA-based fiber lasers
(2012-01-01)
Wang, J. -Y.
;
Lin, K. -H.
;
Chen, H. -R.
;
光電工程學系
;
Department of Photonics
Passive optical waveform generation is obtained in fiber lasers using a 1.3-mu m semiconductor optical amplifier (SOA) as the gain medium. Various waveforms, including square wave, staircase wave, triangular wave, pulse, and dark pulse are generated in SOA-based fiber lasers by adjusting intracavity polarization controllers. The passive waveform generation might be attributed to the SOA gain dynamics and the enhanced nonlinear interaction at the 1.3-mu m zero dispersion wavelength of traditional single-mode fiber (SMF), as well as the interference effect between the two sub-cavities of fiber laser. With figure-8 cavity configuration, 1250th-order harmonic pulses have been successfully demonstrated. We have also obtained a free-running SOA-based fiber laser with 3-dB spectral width of 16 nm, and the center wavelength can be tuned over 45 nm range.