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We describe a planar photonic circuit in silicon-on-insulator that efficiently generates pairs of non-degenerate photons in a single mode output channel through spontaneous four-wave mixing when pumped with 10's of µW of continuous-wave radiation at wavelengths near 1.5 µm. The structure is based on a set of three coupled photonic crystal microcavities, each of which is judiciously coupled to single...
Electrically driven CW operation of energy-efficient ultra-compact InP-based nanolasers in a Silicon photonic platform is demonstrated. The nanolaser diode is single mode and emits at 1560 nm with SMSR grater than 20dB. The threshold is low, around 0.1mA at 1 V and the emitted power in the SOI waveguide is of the order of 0.1mW giving a wall-plug efficiency higher than 10 percents.
This paper dedicated to numerical and experimental investigations of the role of majority carrier concentration in the silicon in the transmission coefficients of photonic crystals created from quartz and silicon layers in microwave frequency range. The silicon of two types of conductivity has been viewed. The impact of majority carrier concentration on the transparence in allowed bands of photonic...
Model predictive current control (MPCC) is widely recognized as a high performance control strategy of permanent magnet synchronous machine (PMSM) drives due to its quick response and simple principle. However, conventional MPCC relies heavily on the model of system to predict the future behavior of stator currents for each voltage vector. The one minimizing the current error is selected as the best...
In this paper, we designated and performed the add/drop filter using the photonic crystal ring resonator(PCRR) in square configuration. The structure comprises of square lattice and silicon rods that are enclosed by air. Radius of silicon rod is 0.1 μm with index of refraction is 3.47. The proposed structure is realized by make use of the Finite Difference Time Domain(FDTD) method. 100% efficiency...
A Photonic Crystal ring resonator based force sensor is proposed. The device consists of Photonic crystal slab integrated on top of a 220nm thick silicon cantilever and is capable of sensing forces as small as 10nN. The sensitivity is derived as 8.33nN for a wavelength resolution of 0.1nm with a high quality factor of 16000.
In this manuscript, an artificial immune network was applied to the inverse problem of maximization of complete photonic band gaps in two-dimensional photonic crystals. The computation of dispersion relations in such structures were carried out by means of the MIT Photonic-Bands package. Because of its multimodal searching capability, the artificial immune network could reach similar results, as well...
We demonstrated an InAsP/InP nanowire laser (diameter ∼100 nm) in telecommunication band on an Si photonic crystal platform. By measuring light-in versus light-out curves, linewidth, emission rate, and photon correlation, lasing oscillation has been unambiguously demonstrated.
Microscale coffee-ring photonic crystal arrays with periodical structure colours were fabricated by evaporation of a colloidal solution in the confined porous polydimethylsiloxane (PDMS) film. The self-assembled concentric rings with various colours were formed by repetition of the deposition and recession cycle of the contact lines. Furthermore, the change in the temperature was found to be crucial...
We demonstrated a flexible crystalline silicon nanomembrane photonic crystal microcavity with a quality factor of 22,000 and experimentally studied its bending behavior.
We present an optical imaging system based on photonic hypercrystal, an artificial optical medium combining the properties of hyperbolic materials and photonic crystals. This system functions as a negative refraction lens with substantially reduced image aberrations.
GaN L3 photonic crystal cavities were fabricated based on a genetic algorithm optimization. Optical characterization of several replicas led to an average unloaded quality factor of 16900, which is well accounted for by first-principles simulations.
We report on fabrication and characterization of 1D photonic crystal on a single erbium chloride silicate nanowire. Design and simulation show that a microcavity laser with Q-factor over 10000 is feasible from a single nanowire.
25 Gbps error-free operation and 16-nm working spectrum were obtained in 200-μm photonic crystal slow light MZ OOK modulators. QPSK modulation was also obtained in a 300-μm device (1.0 × 0.5 mm2 footprint).
We demonstrate the formation of an amorphous chalcogenide photonic crystal light emitter by using a microtrench filling method and solution processing.
Enhanced coupling in slanted L3 nanocavity array expanded bandwidth to 4 THz at telecom wavelength. High-Q tuned L3 nanocavity realized 1,000 coupled cavities with acceptable propagation loss and delay-bandwidth product over 100.
Lasing is demonstrated in III-nitride photonic crystal nanobeam cavities grown on silicon. Laser characteristics are well accounted for by the large spontaneous emission coupling factor inherent to nanobeams and the InGaN quantum well material gain.
In this paper we propose, for the first time, all-optical Majority and Feynman gates in two-dimensional silicon photonic crystals. Photonic crystals are optical semiconductor nanodevices, formed by a periodicity in one, two or three dimensions in the refractive index of a macroscopic media. These devices can operate with low power consumption, high speed and low dissipation of energy to heat. A photonic...
A nanobeam photonic crystal cavity made with InGaAsP quantum well and Si waveguide is integrated on SiO2/Si substrate via transfer printing. The light emitted from the nanobeam showed coupling to waveguide. We demonstrated novel way to integrate III-V devices on Si based photonic integrated circuits.
We comprehensively investigated practical silica-clad photonic crystal waveguides, and found two lattice shifts optimum for low-dispersion slow light. Fabricated device shows a high group index of >50, which ensures twice higher performance than conventional ones.
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