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We review our studies on passively mode-locked fiber lasers and nonlinear optical devices using carbon nanotube (CNT). CNT-based devices offer several key advantages such as: ultra-fast response, robustness, tunability of wavelength, and compatibility to fibers.
We report the observation of self-phase modulation generated in a carbon-nanotube-deposited fiber device. SPM-based optical regeneration of a distorted 10-Gb/s return-to-zero signal is demonstrated and a negative power penalty is obtained in bit-error-rate measurements.
A method to incorporate Carbon Nanotubes into an optical ffiber is descriribed. By controlling the dimensions and location of a carbon nanotube solution within the fifiber, the nonlinearity of the device can be enhanced.
We review our studies on passively mode-locked fiber lasers and nonlinear optical devices using carbon nanotube (CNT). CNT-based devices offer several key advantages such as: ultra-fast response, robustness, tunability of wavelength, and compatibility to fibers.
We demonstrate cross-phase modulation induced nonlinear polarization rotation based wavelength conversion using a carbon nanotubes deposited D-shaped fiber. Wavelength tunable converted signal over C-band is obtained with 2.5-dB power penalty for 10 Gb/s NRZ signal.
We realized, for the first time, NOLM-type all optical switching with carbon nanotubes loaded planar waveguide. ~20% splitting ratio contrast has been achieved using just 1 cm-long carbon nanotubes loaded planar waveguide.
We experimentally demonstrate a novel Kerr shutter functioned by the interaction of carbon nanotubes with the evanescent-field of propagating light in a D-shaped fiber. The scheme initiates applications of the nanotubes to ultrafast all-optical switches.
We demonstrate multiwavelength Er-doped fiber ring laser using fiber Fabry-Perot interferometer as the wavelength selective device. Incorporating a highly nonlinear fiber, multiwavelength lasing over 40 nm is achieved at room temperature.
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