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A multiwavelength fiber laser with adjustable wavelength spacing has been demonstrated. The hybrid gain combining nonlinear gain of self-excited stimulated Brillouin scattering and linear gain of EDF can sustain multiwavelength output. With a birefringence fiber loop filter, the wavelength spacing can be adjusted by changing the length of birefringence fiber.
We have proposed and demonstrated a nonlinear polarization-rotation-based fiber laser with two different operation states: passive mode-locking and multiwavelength emission. The intensity-dependent transmission or loss induced by nonlinear polarization rotation accounts for the distinct operation regimes. Our experiment results indicate that both passively mode-locked pulses and continuous-wave multiwavelength...
Multiwavelength fiber laser based on nonlinear-polarization-rotation (NPR) has been demonstrated. The intensity-depended loss induced by NPR can effectively alleviate mode competition. Using the in-line birefringence fiber filter, the laser wavelength can be finely tuned.
Theoretical model on sideband polarization instability (SPI) is proposed for birefringent fiber ring lasers. Studies show that in normal dispersion region SPI gain displays a oscillation feature and is very sensitive to working conditions.
A novel up-conversion scheme is proposed and demonstrated experimentally for 2.5 Gbit/s ROF system by using a 10 GHz modulator and birefringent fiber loop. The up-conversion signals carried by 40 GHz CSRZ optical pulse are obtained
An all-optical scheme using time delay interferometer to generate 10 Gbit/s CSRZ modulation format signal with tunable pulsewidth is proposed and demonstrated experimentally
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