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This letter presents an integrated multi/demultiplexer that can dynamically and independently control the curvature, tilt, and attenuation of its passband shapes, in order to reduce the signal distortion caused by other filters in the network. 40 Gb/s performance is demonstrated.

We use a novel fiber-grating device to demonstrate the first polarization-insensitive all-fiber higher order mode dispersion compensator for broad-band dispersion compensation. Its low loss and high effective area have enabled transmission through 1000 km (10/spl times/100 km) of nonzero dispersion-shifted fiber (NZDSF) at 40 Gb/s.

We describe a 40-channel X 9.953 Gbit/s dense wavelength-division multiplexed (DWDM) transmitter based on spectrum-slicing of supercontinuum light generated from an electroabsorption-modulated laser (EML). Error-free transmission of all channels over 544 km of standard fiber is demonstrated.

We demonstrate a WDM system with 1021 independent wavelength channels within the C- and L-bands of the EDFA. All channels carry RZ data at 74 Mb/s and are spaced by only 9.5 GHz. We demonstrate transmission over 60 km of standard single mode fiber with power penalties of less than 1.5 dB. The transmitter uses a single wideband optical source and eight high-speed modulators. With optical demultiplexing and low bandwidth receivers, this system has the potential as a low per-port cost access grade system.

We use temporal spectrum-slicing and optical time-division multiplexing to obtain 110 wavelength channels at 2.35 Gb/s from a single femtosecond fiber laser. We show that the output of this transmitter can be propagated over 362 km of standard single mode fiber using periodic amplification and dispersion compensation. Most transmitted channels have Q factors larger than 18.34 dB corresponding to error floors below 10/sup -16/.

We demonstrate the feasibility of a wavelength-division-multiplexed transmitter using a single femtosecond laser and generating 110 channels at 2.35 Gb/s. Chirped-pulse wavelength-division multiplexing is used to carve channels spaced by about 0.3 nm out of the broad spectrum of the laser. A 64-fold increase in bit rate per channel is accomplished through optical time-division multiplexing.

We propose and demonstrate a cascaded distribution fabric for WDM Passive Optical Networks (WDM-PON) that delivers distinct data to potentially tens of thousands of subscribers using a single, centralized WDM source. This is possible by assigning a unique time slot to each wavelength, and replicating this ‘bit-interleaved’ WDM signal in cascaded stages of amplification and power splitting, before data is encoded for each WDM-PON by a single TDM modulator.

We show that optical receivers operated impulsively are more sensitive than for nonreturn-to-zero (NRZ) operation. Impulsive sensitivity improvements of 5.8 and 4.7 dB are measured for two pin-FET receivers using a modelocked laser transmitter, and compared to theoretical expressions for the NRZ and impulsive Q-factors. We also show that the optimum detection bandwidth for impulsive coding is larger than for NRZ, in contrast to previous models.