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Adaptive Transmission of Variable-Rate Data over a Fading Channel for Energy-Efficiency
Adaptive Transmission Variable-Rate Data Fading Channel Energy-Efficiency
2015/8/17
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...
High-Output Saturation Power Variable Confinement Slab- Coupled Optical Waveguide Amplifier
High-Output Saturation Power Variable Confinement Slab- Coupled Optical Waveguide Amplifier
2015/5/15
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 ...
Tunable and variable clock generation up to 1.2 THz by filtering an actively mode-locked 42.5 GHz Quantum Dash Fabry-Perot laser with a reconfigurable filter
Optical communications Quantum dot devices
2015/6/10
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.
Implementation of High-speed Buffer Management for Asynchronous Variable-length Optical Packet Switch
Networks Optical communications
2015/6/10
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...
Use of discrete modulation and a continuous wave local oscillator in a 24 km continuous variable quantum key distribution system
Quantum cryptography Quantum communications
2015/6/10
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...
A Real-Time Asynchronous Dynamically Re-Sizable Optical Buffer for Variable Length 40Gbps Optical Packets
Buffers couplers routers switches multiplexers Networks packet-switched
2015/6/8
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...
Demonstration of Novel Spectrum-Efficient Elastic Optical Path Network with Per-Channel Variable Capacity of 40 Gb/s to Over 400 Gb/s
Spectrum-Efficient Elastic Optical Path Network Per-Channel Variable Capacity
2015/8/6
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...