4,269 research outputs found
Plasmonic Demultiplexer and Guiding
Two-dimensional plasmonic demultiplexers for surface plasmon polaritons
(SPPs), which consist of concentric grooves on a gold film, are proposed and
experimentally demonstrated to realize light-SPP coupling, effective dispersion
and multiple-channel SPP guiding. A resolution as high as 10 nm is obtained.
The leakage radiation microscopy imaging shows that the SPPs of different
wavelengths are focused and routed into different SPP strip waveguides. The
plasmonic demultiplexer can thus serve as a wavelength division multiplexing
element for integrated plasmonic circuit and also as a plasmonic spectroscopy
or filter.Comment: 17 pages, 5 figure
Instantaneous Clockless Data Recovery and Demultiplexing
An alternative architecture for instantaneous data recovery for burst-mode communication is introduced. The architecture can perform 1:n demultiplexing without additional clock recovery phase-locked loop or sampling blocks. A finite-state machine (FSM) is formed with combinational logic and analog LC transmission line delay cells in a feedback loop. The FSM responds to input data transitions instantaneously and sets the outputs. The system reduces unit interval jitter by a factor of n. The new architecture is demonstrated via a SiGe 1:2 clockless demultiplexer circuit that operates at 7.5 Gb/s
Tunable 4-channel ultra-dense WDM demultiplexer with III-V photodiodes integrated in silicon-on-insulator
A tunable 4-channel ultra-dense WDM demultiplexer with 0.25nm channel spacing is demonstrated with III-V photodiodes integrated on Silicon-on-Insulator using rib waveguides. A possible application is an in-band label extractor for all-optical packet switching
A compact and reconfigurable silicon nitride time-bin entanglement circuit
Photonic chip based time-bin entanglement has attracted significant attention
because of its potential for quantum communication and computation. Useful
time-bin entanglement systems must be able to generate, manipulate and analyze
entangled photons on a photonic chip for stable, scalable and reconfigurable
operation. Here we report the first time-bin entanglement photonic chip that
integrates time-bin generation, wavelength demultiplexing and entanglement
analysis. A two-photon interference fringe with an 88.4% visibility is measured
(without subtracting any noise), indicating the high performance of the chip.
Our approach, based on a silicon nitride photonic circuit, which combines the
low-loss characteristic of silica and tight integration features of silicon,
paves the way for scalable real-world quantum information processors.Comment: 4 pages, 5 figure
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