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# IEEE Journal of Quantum Electronics

## Filter Results

Displaying Results 1 - 14 of 14
• ### Thermal Characteristics of Brillouin Microsphere Lasers

Publication Year: 2018, Article Sequence Number: 1000108
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In this paper, we investigate the thermal characteristics of Brillouin microsphere lasers. A mathematical model for Brillouin lasing in a waveguide coupled microcavity is constructed based on the coupled mode theory, the analytic correlation between lasing and thermal power is given. To track the thermal responses of Brillouin microlasers, we introduce two kinds of thermal perturbations on the pac... View full abstract»

• ### Engineered $pi$ -Phase-Shifted Fiber Bragg Gratings for Efficient Distributed Feedback Raman Fiber Lasers

Publication Year: 2018, Article Sequence Number: 1600307
| | PDF (1198 KB) | HTML

Distributed feedback Raman fiber lasers with π-phase-shifted uniform gratings are modeled and simulated in the steady state, to optimize their performance. Using the parameters of realistic devices, it is found that the position change of the π-phase-shift in a constant-strength uniform grating has a significant impact on the laser performance including right and left-hand-side outpu... View full abstract»

• ### Mixed Transition Metal Dichalcogenide as Saturable Absorber in Ytterbium, Praseodymium, and Erbium Fiber Laser

Publication Year: 2018, Article Sequence Number: 1600409
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In this paper, a Mo(1-x)WxS2 thin film saturable absorber (SA) is proposed and fabricated and its performance over a wavelength region of 1.0 to 1. 5μm investigated. The few layer MoWS2 is obtained by hydrothermal exfoliation and fabricated into thin film with a host polymer. The SA is tested in a ring laser cavity with different gain media consis... View full abstract»

• ### Oxide-Confined VCSELs for High-Speed Optical Interconnects

Publication Year: 2018, Article Sequence Number: 2400115
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The electrically pumped vertical-cavity surface-emitting laser (VCSEL) was first demonstrated with metal cavities by Iga (1979); however, the device threshold current was too high. Distributed Bragg reflector cavities proposed by Scifres and Burnham (1975) were adopted to improve the optical cavity loss. Yet, it was not a practical use until the discovery of the native oxide of AlGaAs and the inse... View full abstract»

• ### Advanced VCSEL Technology: Self-Heating and Intrinsic Modulation Response

Publication Year: 2018, Article Sequence Number: 2400209
| | PDF (1350 KB) | HTML

Experimental data and modeling results are presented for a new type of vertical-cavity surface-emitting laser (VCSEL) that solves numerous problems with oxide VCSELs. In addition, the new oxide-free VCSEL can be scaled to small size. Modeling shows that this small size can dramatically increase the speed of the laser through control of self-heating. Modeling compared with both the oxide and the ne... View full abstract»

• ### Dependence of Beam Quality on Optical Intensity Asymmetry in In-Phase Coherently Coupled VCSEL Array

Publication Year: 2018, Article Sequence Number: 2400306
| | PDF (2313 KB) | HTML

Dependence of beam quality on optical intensity asymmetry among elements in in-phase coherently coupled vertical cavity surface emitting lasers array is analyzed using the finite-difference time domain solutions software. The analysis results reveal that the coupling efficiency of in-phased array decreases and the divergence increases as the level of optical intensity asymmetry increases. Furtherm... View full abstract»

• ### Study of Lateral Scaling Impact on the Frequency Performance of SiGe Heterojunction Bipolar Phototransistor

Publication Year: 2018, Article Sequence Number: 4600109
| | PDF (1965 KB)

The influence of the lateral scaling such as emitter width and length on the frequency behavior of SiGe bipolar transistor is experimentally studied. Electrical transistors of different emitter sizes are designed and fabricated by using a commercial bipolar transistor technology. The effect of peripheral current and collector current spreading on electrical bipolar transistor performances are anal... View full abstract»

• ### Optimized ARROW-Based MMI Waveguides for High Fidelity Excitation Patterns for Optofluidic Multiplexing

Publication Year: 2018, Article Sequence Number: 6200107
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Multimode interference (MMI) waveguides can be used for multiplexing and de-multiplexing optical signals. High fidelity, wavelength dependent multi-spot patterns from MMI waveguides are useful for sensitive and simultaneous identification of multiple targets in multiplexed fluorescence optofluidic biosensors. Through experiments and simulation, this paper explores design parameters for an MMI rib ... View full abstract»

• ### Coupled-Mode Analysis of Vertically Coupled AlGaAs/AlOx Microdisk Resonators

Publication Year: 2018, Article Sequence Number: 6300308
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This paper reports the experimental and theoretical assessments of the optical characteristics of recently introduced vertically coupled microdisk resonators made by the selective oxidation of AlGaAs multilayer structures. Experimental measurements show that the Q-factors are in the 103-104 range for diameters ranging from 75 to 300 μm. To establish the origins of this... View full abstract»

• ### Chip-Based Brillouin Processing for Phase Control of RF Signals

Publication Year: 2018, Article Sequence Number: 6300413
| | PDF (3696 KB) | HTML

Manipulating radio frequency (RF) signals in integrated photonic devices has recently emerged as a new paradigm for wireless communications, enabling high-frequency signal processing and broadband frequency agility in miniaturized photonic platforms. These advances are crucial for space and airborne applications which are weight and size sensitive. Recent progress in on-chip stimulated Brillouin s... View full abstract»

• ### Plasmonic Enhancement of Colloidal Quantum Dot Infrared Photodetector Photosensitivity

Publication Year: 2018, Article Sequence Number: 7200207
| | PDF (1211 KB) | HTML

Infrared photodetector based on lead sulfide (PbS) colloidal quantum dot has been shown to be a promising candidate for infrared detectors, due to the low-cost process of fabrication and their extremely high sensitivity. Moreover, these photodetectors have successfully achieved ultrahigh detectivity - exceeding the indium gallium arsenide-based photodetectors - at room temperature. In this paper, ... View full abstract»

• ### Using Image Analysis to Determine Ideal Aperture Conditions for Optimal Z-Scan Signal Quality

Publication Year: 2018, Article Sequence Number: 9000109
| | PDF (1655 KB) | HTML

An image analysis technique that is insensitive to power fluctuations and beam steering issues, and can be used with non TEM00 Gaussian beams, is introduced to determine the nonlinear properties of materials using the well-known Z-scan experimental technique. Instead of measuring the transmission through or around a physical aperture, this method records the complete beam profile digitally at each... View full abstract»

• ### Light Source Monitoring in Quantum Key Distribution With Single-Photon Detector at Room Temperature

Publication Year: 2018, Article Sequence Number: 9300110
| | PDF (1545 KB)

Photon number resolving monitoring is a practical light source monitoring scheme in quantum key distribution (QKD) systems and can, effectively, reduce the risks due to the effects of untrusted sources. This scheme requires a single-photon detector, normally working at low temperature to suppress its dark count rate. In this paper, we use a room-temperature detector and show that the dark count ra... View full abstract»

• ### Correction to “Wavelength Blue-Shifting and Gain Spectral Bandwidth of InAs/InP Quantum Dots for Laser Applications Around 1.55 ${mu}$ m”

Publication Year: 2018, Article Sequence Number: 9700101
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Reference [1, Fig. 8] shows the strain-induced band edge modification (−0.65 eV in CB, −0.41 eV in HH, and +0.1 eV in LH, respectively) in the GaP sublayer, and in fact the non-strain band edge plus strain induced band edge modification should be shown. However, this error does not affect the model and conclusion. The corrected View full abstract»

## Aims & Scope

The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Prof. Hon Ki Tsang
Chinese University of Hong Kong