All-optic scheme for automatic polarization division demultiplexing.

In-line liquid-crystal microcell wave plates and their application for high-speed, reset-free polarization mode dispersion compensation in 40-Gbit/s systems.

We describe the design, fabrication, and performance of a high-speed, continuously tunable, and reset-free polarization controller based on nematic liquid-crystal (NLC) microcell wave plates fabricated directly between the tips of optical fibers. This controller utilizes a pulsed driving scheme and optimized NLC materials to achieve a stepwise switching speed of 1 deg/micros, for arbitrary rota...

A Very Compact, High Speed and Rugged Acousto-Optic Tunable Filter for Wavelength Division Demultiplexing in Fiber Optic Communication Networks

Ultrafast time-division demultiplexing of polarization-entangled photons.

Maximizing the information transmission rate through quantum channels is essential for practical implementation of quantum communication. Time-division multiplexing is an approach for which the ultimate rate requires the ability to manipulate and detect single photons on ultrafast time scales while preserving their quantum correlations. Here we demonstrate the demultiplexing of a train of pulse...

Influence of the Laser Detuning and Optical Filter Cascading in WDM Networks

The laser wavelength dependence on the temperature, polarization current, aging, can represent a problem in optical networks where multiple multiplexing and demultiplexing operations occur. These demultiplexing operations are commonly performed using fiber Bragg gratings, due to their versatility and unique filtering capabilities. In this contribution we evaluate the dependence of WDM networks ...

All - Optical Pulse Regeneration in a Faraday Stabilized Ultrafast Nonlinear Interferometer

Modern fiber optic communications networks multiplex data onto many different channels, each with its own carrier frequency. In order to meet rising demand for high data rates, researchers have begun to consider methods to use the bandwidth of optical fibers more efficiently. In particular, more efficient use might come from operating fewer channels with each channel at a higher data rate, or p...