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Adapting to a time-varying channel to maximize the average information rate for a given power constraint is a well-understood problem. Important studies (e.g., [I], [Z], [3]) have developed optimal ra...
We experimentally demonstrate a tunable and reconfigurable optical DFT to demodulate 10-40-Gbuad OFDM with 2/3/4 subcarriers at 20/40GHz frequency spacing. Average power penalty of ~7 dB at BER of 10 ...
Variable gate width, all-optical sampling using an electroabsorption modulator is pro- posed for a multi-bit rate, optical performance monitor. The discrepancy between waveform quality and bit error r...
We demonstrate RZ-to-NRZ pulse format conversion at tunable bit-rates using a delay-asymmetric nonlinear loop mirror. The input RZ-OOK signals are converted to NRZ-OOK signals with a power penalty les...
A variable optical confinement concept was incorporated into a slab-coupled optical waveguide amplifier to increase output saturation power. This amplifier demonstrates an unsaturated gain of 21.1 dB ...
We report on the generation of an optical clock up to 1.2 THz using a Quantum Dash mode-locked laser and a spectral filter, selecting two or three lines, which are separated by the desired spacing.
We investigated the high spectrum efficiency property of the bandwidth-variable optical OFDM (BV-OOFDM) transport networks. In contrast to mixed-line-rate (MLR) networks, BV-OOFDM enables flexible all...
We develop an FPGA-based buffer management hardware with 8 input ports, which implements a parallel and pipeline mechanism to support over-200-Mpacket/s/port asynchronous variable-length optical packe...
We implement an experimental continuous variable quantum key distribution system over 24 km of optical fiber that uses discrete signaling and a continuous wave local oscillator. A secure key rate of 3...
We demonstrate a bit rate variable add- and drop function performed on an optical OFDM superchannel signal by optical filtering and superposition of OFDM subbands and the application of different modu...
We demonstrate a 40Gbps dynamically re-sizable optical buffer capable of storing packets of lengths ranging from 40 to 800 bytes. Packet recovery measurements greater than 95% demonstrate a dynamic op...
We demonstrate a stable 10GHz harmonically modelocked laser employing a 151cm-long bismuth-based highly nonlinear erbium-doped fiber and a bandwidth-variable tunable filter. The wavelength tuning rang...
We experimentally demonstrate 160-Gbit/s PRBS data multiplexing with tunable rate and order using switchable optical delays and conversion/dispersion based tunable optical delay. Less than 9 dB penalt...
We demonstrated, for the first time, a novel spectrum-efficient elastic optical path network for 100 Gb/s services and beyond, based on flexible rate transceivers and variable-bandwidth wavelength cro...
We have fabricated glass fibers with nonlinear crystalline phase in clad area by laser irradiation, and demonstrated variable optical attenuation by electro-optic effect using the space-selectively cr...

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