# IEEE Journal of Selected Topics in Quantum Electronics

### Early Access Articles

Early Access articles are made available in advance of the final electronic or print versions. Early Access articles are peer reviewed but may not be fully edited. They are fully citable from the moment they appear in IEEE Xplore.

## Filter Results

Displaying Results 1 - 20 of 20
• ### Photonic Damascene process for low-loss, high-confinement silicon nitride waveguides

Publication Year: 2018, Page(s): 1
| | PDF (54995 KB)

We report on fabrication of high-confinement and low loss silicon nitride (Si$^{3}$N$^{4}$) waveguides using the photonic Damascene process. This process scheme represents a novel fabrication approach enabling reliable, wafer-scale fabrication of high-confinement optical waveguides. A reflow step of the silica preform reduces sidewall sca... View full abstract»

• ### Photonic crystal circular-defect microcavity laser designed for wavelength division multiplexing

Publication Year: 2018, Page(s): 1
| | PDF (899 KB)

Photonic crystal (PC) lasers with circular-defect (CirD) microcavity offer high potential application in wavelength division multiplexing (WDM), and therefore are a suitable candidate to realize intra-chips optical communications. In this paper, a CirD laser for WDM applications is designed for the first time by using the three-dimensional finite-difference time-domain method. For the realization ... View full abstract»

• ### Adiabatic and Ultra-Compact Waveguide Tapers based on Digital Metamaterials

Publication Year: 2018, Page(s): 1
| | PDF (849 KB)

Adiabatic waveguide taper is one of the fundamental building blocks in photonic integrated circuits, but it is challenging to achieve high efficiency and compact size simultaneously. Here we demonstrate efficient, compact and adiabatic on-chip spot-size converters using inversely-designed tapers based on digital-metamaterials. Ultra-compact tapers with only 3-μm length between single-mode a... View full abstract»

• ### Signal Enhancement by Fiber-Dispersion in sub-GHz Frequency Domain Bio-photonic Diagnosis Systems

Publication Year: 2018, Page(s): 1
| | PDF (1003 KB)

Pulsed lasers can be utilized to generate intensity-modulated light at the fundamental repetition rate and higher-order modulation (HOM) frequencies in our recent study. We also demonstrated the feasibility of using pulse lasers and fiber-wavelength-convertors as a light source in multi-color frequency-domain (FD) bio-photonic systems. In this paper, we present a novel approach to enhance the inte... View full abstract»

• ### Defects and their reduction in Ge selective epitaxy and coalescence layer on Si with semicylindrical voids on SiO$_{2}$ masks

Publication Year: 2018, Page(s): 1
| | PDF (6567 KB)

Formation of semicylindrical voids on SiO$_{2}$ masks in Ge layers selectively grown on Si have positive impacts for reduction of threading dislocation density (TDD). Semicylindrical voids are formed through selective epitaxial growth (SEG) and coalescence of SEG Ge layers. A cross-sectional transmission electron microscope (TEM) observation reveals that a threading d... View full abstract»

• ### Common-path Optical Coherence Tomography using Bessel Beam from Negative Axicon Optical Fiber Tip

Publication Year: 2018, Page(s): 1
| | PDF (829 KB)

In this work a deep-seated negative axicon fiber tip (DSNA-FT) generating Bessel-Gauss beam is proposed as an optical probe for common-path optical coherence tomography (CPOCT) imaging. The axicon at the optical fiber tip is fabricated by etching the tip of a selective optical fiber in hydrofluoric acid under the influence of capillary action. The non-diffracting type quasi Bessel beam from the DS... View full abstract»

• ### Enhanced nonlinear refractive index of C-rich SiC waveguides via annealing for PRZ-OOK data transmission

Publication Year: 2018, Page(s): 1
| | PDF (6676 KB)

The C-rich SiC$_{x}$ with enhanced optical nonlinearity is employed to fabricate ring waveguides to perform picosecond optical switching of pulsed data streams under the wavelength conversion scheme. The C-rich SiC$_{x}$ film after 60-minute annealing exhibits abundant graphite-like (sp$^{2}$-like) C-C bonds ... View full abstract»

• ### Neuromorphic Photonic Integrated Circuits

Publication Year: 2018, Page(s): 1
| | PDF (17530 KB)

This manuscript reviews some recent progress in the field of neuromorphic photonics, with a particular focus on scalability. We provide a framework for understanding the underlying models, and demonstrate a neuron-like processing device an excitable laser that has many favorable properties for integration with emerging photonic integrated circuit platforms. On a systems level, we compare several p... View full abstract»

• ### Plasmonic Photodetectors

Publication Year: 2018, Page(s): 1
| | PDF (3236 KB)

Plasmonic photodetectors are attracting the attention of the photonics community. Plasmonics is attractive because metallic structures have the ability to confine light by coupling an electromagnetic wave to charged carrier oscillations at a surface of the metal. The wavelength of such oscillations can be much smaller than the corresponding light wavelength in vacuum. This enables the light-matter... View full abstract»

• ### Design Considerations of Silicon Nitride Optical Phased Array for Visible Light Communications

Publication Year: 2018, Page(s): 1
| | PDF (1426 KB)

Design considerations and guidelines for exploiting an array of silicon nitride grating couplers for point to point communication with the ability of two-dimensional beam steering, are investigated using numerical simulations. A single grating coupler is designed to enable efficient and directional radiation. The spacing of couplers in the array is optimized in order to decrease the level of the c... View full abstract»

• ### Coherent Narrow-Band Light Source for Miniature Endoscopes

Publication Year: 2018, Page(s): 1
| | PDF (1094 KB)

In this work, we report the successful implementation of a coherent narrow-band light source for miniature endoscopy applications. A RGB laser module that provides much higher luminosity than traditional incoherent white light sources is used for illumination, taking advantages of the laser light's high spatial coherence for efficient light coupling. Notably, the narrow spectral band of the laser ... View full abstract»

• ### Discrete similariton and dissipative soliton modelocking for energy scaling ultrafast thin-disk laser oscillators

Publication Year: 2018, Page(s): 1
| | PDF (1377 KB)

Since their first demonstration, modelocked thin-disk lasers have surpassed other modelocked oscillators in terms of achievable pulse energy and average power by several orders of magnitude. Surprisingly, state-of-the-art results have so far only been achieved in modelocking regimes where soliton pulse shaping is dominant (i.e., soliton modelocking with semiconductor saturable absorber mirrors or ... View full abstract»

• ### On-chip Brillouin filtering of RF and Optical Signals

Publication Year: 2018, Page(s): 1
| | PDF (1186 KB)

High-resolution signal processing will be key in current and future communication networks in crowded spectral environments. Signal processing based on the nonlinear optical process known as stimulated Brillouin scattering (SBS) are applicable in high-performance analog signal filtering for RF communications and in coherent optical communication systems for carrier amplification. To meet the requi... View full abstract»

• ### Evaluating micro-optical coherence tomography (μOCT) as a feasible imaging tool for pancreatic disease diagnosis

Publication Year: 2018, Page(s): 1
| | PDF (32337 KB) |  Media

Pancreatic cancer is one of the leading causes of cancer mortality worldwide due to the lack of reliable tools for early diagnosis of this cancer. In this study, we evaluated the feasibility of micro-optical coherence tomography (μOCT) as an imaging tool for the diagnosis of pancreatic cancers. Specifically, we constructed a μOCT device that achieves a resolution of ∼1.67 �... View full abstract»

• ### Single-shot and Label-free Refractive Index Dispersion of Single Nerve Fiber by Triple-wavelength Diffraction Phase Microscopy

Publication Year: 2018, Page(s): 1
| | PDF (883 KB)

Nerve fibers play a critical role in the propagation of electrical impulses in the nervous system, and several studies have demonstrated their electrical and chemical properties. However, because of a lack of practical biophotonics techniques, most of the optical properties of these fibers are unknown. Herein, we propose and demonstrate a novel method of precisely measuring the dispersion of an in... View full abstract»

• ### Frontiers of mid-IR lasers based on transition metal doped chalcogenides

Publication Year: 2018, Page(s): 1
| | PDF (14740 KB)

Enabling broad tunability, high peak and average power, ultra-short pulse duration, and all known modes of laser operation - Transition-metal (TM)-doped II-VI chalcogenides are the materials of choice for direct lasing in the mid-IR. The host materials feature broad infrared transparency, high thermal conductivity, low phonon cut-off, low optical losses, and are available as either single crystals... View full abstract»

• ### A Review of Magneto-Optical Microstructure Devices at Terahertz Frequencies

Publication Year: 2017, Page(s): 1
| | PDF (3175 KB)

Recent researches on magneto-optical microstructure devices in terahertz (THz) regime have been reviewed. Some magneto-optical materials responded at THz frequency range were introduced. Based on these magneto-optical materials, MO microstructures devices were reviewed, including magnetic photonic crystal, magneto-plasmonics and magneto-metasurface all in the submillimetre scale. These devices can... View full abstract»

• ### Generation of Mode-locked Ytterbium doped fiber ring laser using few-layer black phosphorus as a saturable absorber

Publication Year: 2017, Page(s): 1
| | PDF (692 KB)

We demonstrate the generation of mode-locked pulses from a double-clad ytterbium-doped fiber laser (YDFL) employing a saturable absorber (SA) made of a few layers of black phosphorus (BP). The BP SA was prepared by mechanically exfoliating BP crystal and spreading the acquired BP flakes on a piece of scotch tape. The tape was then sandwiched between two ferrules and incorporated in a YDFL cavity t... View full abstract»

• ### Surface plasmon resonance assisted simultaneous bio and gas sensing in visible range

Publication Year: 2017, Page(s): 1
| | PDF (495 KB)
• ### Thermal resistance of InAs/InP quantum dot laser

Publication Year: 2017, Page(s): 1
| | PDF (52 KB)

NOTICE TO THE READER It is recommended and agreed upon by the authors and the Editor-in-Chief of the IEEE Journal of Selected Topics in Quantum Electronics that the following article: “Thermal Resistance of InAs/InP Quantum Dot Laser,” by S. G. Li, Q. Gong, C. F. Cao, X. Z. Wang, J. Y. Yan, Y. Wang and H. L. Wang, DOI: 10.1109/JSTQE.2014.2302355 is withdrawn and should not be conside... View full abstract»

## Aims & Scope

Papers published in the IEEE Journal of Selected Topics in Quantum Electronics fall within the broad field of science and technology of quantum electronics of a device, subsystem, or system-oriented nature.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Prof. José Capmany
Universitat Politècnica de València, Spain Photonics Research Labs, ITEAM Research Institute
Virginia Polytechnic Institute & State University