Generation of all-fiber optical Manchester code using nonlinear polarization rotation

NRZ to Manchester code conversion based on nonlinear optical fiber loop mirror

Optical switching using nonlinear polarization rotation inside silicon waveguides.

We study the nonlinear polarization rotation induced by a pump pulse on a probe beam through cross-phase modulation inside a silicon waveguide and show that this phenomenon can be used to realize a fast Kerr shutter in spite of the free-carrier effects and walk-off. We show that free carriers generated by the pump pulse through two-photon absorption affect the switching process considerably, es...

Optimization of Bistability in Nonlinear Chalcogenide Fiber Bragg Grating for All Optical Switch and Memory Applications

We solve the coupled mode equations governing the chalcogenide nonlinear fiber Bragg gratings (FBGs) numerically, and obtain the bistability characteristics. The characteristics of the chalcogenide nonlinear FBGs such as: switching threshold intensity, bistability interval and on-off switching ratio are studied. The effects of FBG length and its third order nonlinear refractive index on FBG cha...

Nonlinear Polarization Rotation for Fiber Lasers with UltraHigh Pulse Energy

This report introduces principles of fiber lasers passively mode-locked by nonlinear polarization rotation (NPR). Dispersion and nonlinearity management of the laser cavity play an essential role in determining the laser operation state. Different soliton operation of the laser is discussed. Taking advantage of weak soltion restriment of per-pulse energy of postive net cavity dispersion cavity,...

Stable and uniform multiwavelength erbium-doped fiber laser using nonlinear polarization rotation.

A novel and simple technique, based on nonlinear polarization rotation (NPR) effect, to generate stable multiwavelength oscillations in an erbium-doped fiber laser is proposed and successfully demonstrated. The NPR effect effectively induced intensity- and wavelength-dependent loss to alleviate mode competition caused by homogeneous gain broadening in erbium-doped fibers. Up to 28-wavelength la...