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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 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.
We demonstrate super-continuum generation in a 1-meter-long bismuth-oxide fiber using a 1.5-mum amplified spontaneous emission noise burst instead of ultra-short pulses. Super-continuum is generated over 200 nm with an average power of +23 dBm.
We report the observation of four-wave mixing in carbon nanotubes deposited around a tapered fiber with optical deposition method. Wavelength conversion of 10 Gb/s non-return-to-zero signal is demonstrated using the generated four-wave mixing effect.
We present a novel, simple method to fabricate polymer optical fiber (POF) doped with carbon nanotubes (CNTs). Passive mode-locking utilizing such fiber as a saturable absorber is demonstrated for the first time to our knowledge.
We propose and demonstrate carbon nanotube deposition around tapered fibers induced by propagating light through the fibers. A passively mode-locked fiber laser was realized using the fiber.
We propose and demonstrate optically controllable tapered fiber based ring resonators. Light injection through a resonator broadened its free spectral range by changing the shape of the resonator.
We review our studies on passively mode-locked fiber lasers using carbon nanotube (CNT) based saturable absorbers (SA). CNT-based SA offers several key advantages such as: ultra-fast response, robustness, tunability of wavelength, and compatibility to fibers.
We realized a wavelength-tunable mode-locked fiber laser using intracavity dispersion. Continuous tuning over 100 nm was obtained at a sweep rate of 20 kHz. Discrete tuning was achieved over 39 nm by inserting a FFPI into the cavity.
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.
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