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We proposed a fiber Bragg grating based Pr3+-doped down conversion fiber lasers for red and green light generation. Numerical simulations investigate both steady state and Q-switching dynamics that qualitatively agree well with previous experimental demonstrations.
The experimental realization of a nanoscale, high efficiency, and non-resonant broadband orthogonal junction as a coupling scheme between plasmonic slot and silicon waveguide is presented. This serves as an enabling platform for hybrid plasmonic interconnects.
Mode-locked lasers show femtosecond and even attosecond level short term timing jitter. Such ultralow jitter sources enable novel systems. Timing distribution systems for next generation light sources and prototype high-speed, high-resolution photonic analog-to-digital converters are demonstrated.
A waveguide coupled Ge PIN photodiode showing 0.7A/W responsivity and 13GHz optical bandwidth at a low dark current of 12mA/cm2 is presented. Its unique features facilitate integration in a high-performance, photonic BiCMOS process.
Up to 12.5 Gb/s optical wireless personal area communication system with a steering-mirror based receiver is proposed and experimentally demonstrated in this paper. Compared with previous system, the coverage area can be improved by ∼20%.
We present measurements and theoretical work demonstrating the drastic reduction of polarization instability driven noise, improving the stability of polarized supercontinuum generated in all normal dispersion highly nonlinear fiber
An all-optical, UWB doublet pulse generation scheme based on nonlinear optical loop mirror with parametric amplification is experimentally demonstrated. The scheme is shown to be capable of producing high quality UWB doublet pulses.
The required equalizer complexity for GI-MMF (graded index multi-mode fiber) transmitting 15 spatial modes is numerically calculated with different bend radius in 112 Gb/s DP-QPSK transmission.
We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with low photon numbers.
This paper discusses how the addition of Bismuth to III–V alloys gives rise to improved band structure potentially offering reduced non-radiative losses and improved temperature stability for devices in the near- and mid-infrared.
Large area and semi-transparent highly light sensitive nanocrystal skin is demonstrated via spray-coating nanocrystals on top of polyelectrolyte-polymers based on photogenerated potential buildup where no external bias is applied.
We designed and analyzed “Mesh-Stack” three-dimensional photonic crystals of 14% bandgap fully compatible with fabrication methods based on alignment and stacking large-area single-crystal membranes containing engineered defects. A single-mode waveguide and misalignment effects are presented.
A monolithic, 27-meter long waveguide having optical loss of less than 0.1dB/m is demonstrated. The same process produces resonators having Q factors as high as 875 million. Applications are reviewed.
A conditional realization of the single-qubit amplitude damping channel is proposed. Kraus operators are probabilistically realized in dual-rail frequency basis by use of phase modulation and a fiber Bragg grating, resulting in success probabilities >31.5%.
Pulses emitted by an excitable (asymmetric) semiconductor ring laser are experimentally and theoretically characterized. We numerically show that it is possible to mimic neural functionality by considering them in a coupled configuration.
Modeling results for lateral-longitudinal mode discrimination in longitudinally inhomogeneous finite-length waveguides of ridge lasers are presented, obtained by numerical solutions of the wave equation and calculations of the mode thresholds, predicting high-brightness single-mode output of wide stripes.
We demonstrate a quantum optical seal using entangled photons to monitor the integrity of a fiber-optic channel subject to tampering. This application of quantum photonics provides a basis for physical layer security in cyber-physical systems.
We fabricated TFPT with 14-nm-thick n-ZnO channel at 80°C by ALD technique. The drain to source photocurrent due to UV photons can be tuned by changing gate voltage. We also observed that the absorption of sub-bandgap photons could be prevented by operating at positive gate bias. This property could be used for light modulators for visible regime. Moreover, this could be applied to the smart glass...
We demonstrated a flexible thin-film CdSe quantum dot (QD) photodetector by sandwiching a piece of QD drop-casted tracing paper between two PEDOT:PSS electrodes printed by a desktop inkjet printer on a transparency film.
We present the first experimental observation of a time-periodic oscillating cavity soliton excited in a homogeneously driven nonlinear fiber cavity. We theoretically predict several dynamical instabilities, such as oscillations, excitability and different chaotic states.
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