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We demonstrate a four-port optical switch for the photonic network-on-chip architecture, which contains four silicon Mach-Zehnder optical switch elements tuned by the plasma dispersion effect. The optical signal-to-noise ratio of the device is over 10.0 dB in the wavelength range from 1525 nm to 1565 nm. Its 10%–90% rise time and fall time are 2 ns.
This paper presents the design and simulative results of an optical frequency comb (OFC) with good flatness and wide Free Spectral Range (FSR) for the photonic Radio-Frequency (RF) channelization used to process high frequency and wideband RF signals. The scheme of a photonic RF channelizer employing a flat optical frequency comb based on cascaded intensity modulator (IM) and phase modulator (PM)...
We propose a controlled-NOT (CNOT) gate based on two-photon quantum interference in cascaded silicon dual-ring resonators with Mach-Zehnder interferometer-assisted coupling. We illustrate the working principle and the design parameters of the device by theoretical modeling.
The coupling between excitons and localized surface plasmons in two-level systems can lead to enhanced spontaneous emission and was studied using site-controlled InGaN quantum dots. The dynamics and the Purcell effect were measured and analyzed.
We illustrate a 2×2 quantum photonic switch fabric using two-photon quantum interference in an integrated silicon microring resonator array. Our modeling demonstrates phase- or wavelength-selective routing of single photons at different output states.
Semiconductor quantum dot based single photon emitters are a critical component for quantum cryptography. In this work, we show a scalable single-photon emitter structure using site-controlled elliptical quantum dots with a controllable and tunable output polarization.
We report single-photon emission from electrically driven site-controlled InGaN/GaN dot-in-nanowires, fabricated from a planar single InGaN quantum well LED using a top-down approach. Each dot-in-nanowire's formation site, diameter, height and material compositions were precisely controlled.
Semiconductor quantum dots (QDs) have diverse quantum photonic applications [1] due to their atomic-like properties, characterized by discrete, optically active energy states. Most work to date has been based on III-As and III-P materials, which face severe limitations in operating temperature due to their small band offsets and exciton binding energies. On the other hand, QDs have been typically...
Cherenkov radiations at mid-infrared region are generated in photonic crystal fibers Experimentally. The wavelength of the Cherenkov radiation can be tunable from 1986–2279 nm, with the average input pump power increasing from 70–320 mW.
Site-controlled single photon emitters with emission wavelengths matched to the peak efficiency of silicon single photon detectors were demonstrated using lithographically defined InGaN/GaN quantum dots. A drastic strain-relaxation-induced enhancement of radiative efficiency was observed.
In this paper, we propose a novel circuit-switched on-chip photonic interconnection network (CSPIN) architecture. Different from existing circuit-switched photonic networks, CSPIN eliminates the electronic control layer but employs optical signaling to control the circuit switching functions. To implement CSPIN, the CSPIN router is proposed which uses electro-optical tuned micro-ring resonators. The...
In this paper we propose to use comb switches to simplify Banyan-type on-chip wavelength-routed passive photonic networks constructed by micro-ring resonator (MRR)-based optical switches. Compared with general wavelength-routed optical networks, the number of MRRs used in the simplified network is significantly reduced.
A universal method to constructing scalable non-blocking optical router for photonic NoC is proposed, which has fewer microring resonators, fewer waveguides and fewer crossings.
Photonic Networks-on-Chip (NoC) is considered as a promising candidate to interconnect a large number of processing cores. The heart of a photonic NoC is the on chip photonic interconnection network which is composed of silicon waveguides and optical routers. In this paper, we propose a scalable and non-blocking passive optical router design using micro-ring resonators (MRRs), namely the generic wavelength-routed...
The emerging nanophotonic technology can avoid the limitation of I/O pin count, and provide abundant memory bandwidth. However, current DRAM organization has mainly been optimized for a higher storage capacity and package pin utilization. The resulted data fetching mechanism is quite inefficient in performance and energy saving, and cannot effectively utilize the abundant optical bandwidth in off-chip...
A four-channel thermally-tuning reconfigurable optical add-drop multiplexer based on silicon photonic wire is reported. The minimum insertion loss is 10.7 dB, the tuning bandwidth 17 nm and the tuning power efficiency 6.187 mW/nm.
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