Chi-Ming Hung

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The transition rate of the stimulated emission at the higher energy levels of the excited states in a silica-based erbium-doped fiber can be enhanced by introducing fundamental-mode cutoff filtering mechanism. The electrons excited by optical pumping can more occupy the higher energy levels of the excited states when the transition rate for the lower energy(More)
We demonstrate a high-gain low-noise double-pass tunable EDFA over S- and C+L-bands by discretely introducing fundamental-mode leakage loss in a 16-m-long standard C-band Er(3+)-doped fiber. The amplified spontaneous emission at the wavelengths of longer than 1530 nm can be substantially attenuated by the ASE suppressing filters to maintain high population(More)
All-optical 10 Gbit/s NRZ-to-RZ data-format conversion in a backward dark-optical-comb injected semiconductor optical amplifier with BER of 10<sup>-13</sup> at receiving power of -19 dBm and a positive power penalty of 3.7 dB is primarily demonstrated
The transition rate of the stimulated emission at the higher energy levels of the excited states in a silica-based erbium-doped fiber can be enhanced by introducing fundamental-mode cutoff filtering mechanism. The electrons excited by optical pumping can more occupy the higher energy levels of the excited states when the transition rate for the lower energy(More)
Effect of cross-gain-modulating power and wavelength on a reshaped-optical-clock injected SOA at 10 Gbit/s is investigated to achieve pulsed data-pattern transformation with highest extinction ratio of 14.8 dB at input data power of -10 dBm under a modulating power of 17.9 dBm at 1550 nm.
Effect of cross-gain-modulating power and wavelength a reshaped-optical-clock injected SOA at 10 Gbit/s is investigated to achieve pulsed data-pattern transformation with highest extinction ratio of 13.6 dB at input data power of -10 dBm under a modulating power of 17.9 dBm at 1550 nm.
We demonstrate high-gain low-noise double-pass EDFA over S- and C+L-bands using fundamental-mode cutoff filters in a 16-m-long standard C-band Er<sup>3+</sup>-doped fiber. Under S-band operation, a 37 dB small signal gain and a minimum 4.84 dB noise figure at 1486.9 nm are achieved with a 980-nm pump power of 154 mW.
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