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# IEEE Photonics Journal

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Displaying Results 1 - 25 of 42
• ### Parasitic Stimulated Amplification in High-Peak-Power and Diode-Seeded Nanosecond Fiber Amplifiers

Publication Year: 2014, Article Sequence Number: 1500809
Cited by:  Papers (5)
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The broadband parasitic amplification in a diode-seeded nanosecond ytterbium-doped fiber laser amplifier system is numerically and experimentally investigated. The amplification is originated from a weak and pulsed parasitic signal associated with the 1064-nm seed diode laser. Although the average power of the parasitic pulse is less than 5% of the total seed laser power, a significant transient s... View full abstract»

• ### Bright and Dark Square Pulses Generated From a Graphene-Oxide Mode-Locked Ytterbium-Doped Fiber Laser

Publication Year: 2014, Article Sequence Number: 1500908
Cited by:  Papers (3)
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The observation of the bright pulses and dark square pulses in a graphene-oxide saturable absorber (GOSA) passively mode-locked ytterbium-doped fiber laser has been investigated experimentally. Bright pulses are achieved at a pump power of ~ 200 mW. However, the dark-square-pulse generation starts at a much higher pump power of ~ 450 mW. At the maximum pump power of 600 mW, the dark-square-pulse b... View full abstract»

• ### Topological Insulator Simultaneously Q-Switched Dual-Wavelength $\hbox{Nd}:\hbox{Lu}_{2}\hbox{O}_{3}$ Laser

Publication Year: 2014, Article Sequence Number: 1501007
Cited by:  Papers (6)
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We demonstrated the dual-wavelength simultaneously Q-switched Nd: Lu2O3 laser with a topological insulator Bi2Se3 as the Q-switcher. The continuous-wave Nd:Lu2O3 crystal laser with the slope efficiency of 31% was achieved, and the first Nd:Lu2O3 pulsed laser operation was reported, as far as we know. By using t... View full abstract»

• ### Cascaded Cladding Light Extracting Strippers for High Power Fiber Lasers and Amplifiers

Publication Year: 2014, Article Sequence Number: 1501106
Cited by:  Papers (3)
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We demonstrate efficient cladding light extracting through cascaded strippers for high-power fiber lasers and amplifiers. A selected part of the fiber is divided into five segments, and the fluoroacrylate jackets of three interval segments are gradually removed and replaced with different higher index polymers. It is shown that such cascaded strippers can overcome the challenging problems of local... View full abstract»

• ### Kilowatt Peak Power Pulses From a Passively Q-Switched Yb-Doped Fiber Laser With a Smaller-Core Yb-Doped Fiber as a Saturable Absorber

Publication Year: 2014, Article Sequence Number: 1501207
Cited by:  Papers (1)
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We demonstrated a passively Q-switched Yb-doped fiber laser in an all-fiber configuration that used a piece of a Yb-doped fiber with a smaller core than the gain fiber as a saturable absorber. The laser generated stable output pulses at 1064 nm with a narrow line width of less than 0.2 nm. The Q-switched pulses have a pulse width of 140 ns and pulse energy of 141 μJ at a repetition rate of ... View full abstract»

• ### Ultralow Propagation Loss Slot-Waveguide in High Absorption Active Material

Publication Year: 2014, Article Sequence Number: 2200606
Cited by:  Papers (1)
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A slot waveguide formed by high absorption active material is proposed to reduce the propagation loss for monolithic integration. The low propagation loss is attained by concentrating the optical field inside the low-index slot region without absorption. The simulation results show that the propagation loss at 1.55 μm for the slot waveguide can be as low as 1.5 dB/cm in active material with... View full abstract»

• ### Radially Polarized Orbital Angular Momentum Beam Emitter Based on Shallow-Ridge Silicon Microring Cavity

Publication Year: 2014, Article Sequence Number: 2200710
Cited by:  Papers (6)
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Radially polarized orbital angular momentum (OAM) beams could be applied in optical manipulation and optical microscopy. An integrated OAM beam emitter with radially polarized radiation is proposed on shallow-ridge silicon microring with azimuthally distributed gratings etched on top of the ring waveguide. Two key structural parameters, the number of grating elements, and the dimension of each gra... View full abstract»

• ### Slot Spiral Silicon Photonic Crystal Fiber With Property of Both High Birefringence and High Nonlinearity

Publication Year: 2014, Article Sequence Number: 2200807
Cited by:  Papers (2)
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A photonic crystal fiber (PCF) made of silicon is proposed and numerically optimized with both ultrahigh birefringence and nonlinearity. By introducing an elliptical low-index slot in the core region, one of the orthogonally polarized fundamental modes can be confined in the low-index region due to the discontinuity of its electric field at the interface of the slot and the surrounding material, w... View full abstract»

• ### A Low-Cost and High-Wavelength-Precision Fabrication Method for Multiwavelength DFB Semiconductor Laser Array

Publication Year: 2014, Article Sequence Number: 2400112
Cited by:  Papers (4)
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A new method to fabricate the multiwavelength DFB semiconductor laser array (MLA) is proposed for the first time based on sampled grating and s-bent waveguide. According to the detailed precision analysis, the lasing wavelength accuracy of the proposed structure is significantly improved. Because the common holography exposure and micrometer photolithography are used to fabricate the sampled grati... View full abstract»

• ### Interferometric Scheme for High-Sensitivity Coaxial Focusing in Projection Lithography

Publication Year: 2014, Article Sequence Number: 2600310
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Focusing of wafer plane is an essential factor to determine the ultimate feature size of the stepper such as projection lithographic system. Based on Michelson interferometeric system, this paper demonstrates an interferometric focusing scheme for projection lithography to coaxially locate the ideal focal plane of the projective objective. The collimated incident laser beam is divided into the ref... View full abstract»

• ### Real-Time Waveform Characterization by Using Frequency-Resolved Optical Gating Capable of Carrier-Envelope Phase Determination

Publication Year: 2014, Article Sequence Number: 3300212
Cited by:  Papers (3)
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We present real-time waveform characterization of ultrashort pulses by the use of a pulse-front tilt in frequency-resolved optical gating capable of carrier-envelope phase determination. Simultaneous measurement of cross-correlation frequency-resolved optical gating and electro-optic sampling signals has been realized without scanning any delays. Complete waveform characterization of single-cycle ... View full abstract»

• ### Study of GaN LED ITO Nano-Gratings With Standing Wave Analysis

Publication Year: 2014, Article Sequence Number: 4500210
Cited by:  Papers (2)
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This study reveals the effect of nanoscale ITO transmission gratings on light emission from the top, sides, and bottom of a GaN light-emitting diode (LED), based on the substrate standing wave analysis. First, we show that sapphire substrate thickness affects the standing wave pattern in the LED and find the best- and worst-case sapphire thicknesses. Second, we find that adding nanoscale ITO trans... View full abstract»

• ### All-Optical Logic Gate for XOR Operation Between 40-Gbaud QPSK Tributaries in an Ultra-Short Silicon Nanowire

Publication Year: 2014, Article Sequence Number: 4500307
Cited by:  Papers (8)
| | PDF (860 KB) | HTML

We demonstrate an all-optical XOR logic gate for 40-Gbaud quadrature phase-shift keying (QPSK) tributaries in a silicon nanowire for the first time. The XOR logic operation is realized based on four-wave mixing (FWM) in the C-band. Experimental results show negligible power penalty at a bit error ratio (BER) of 10-6 compared with the back-to-back signals. The BER floor appears at BER of... View full abstract»

• ### Guided-Mode Resonances in GaN Membrane Grating

Publication Year: 2014, Article Sequence Number: 4500407
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This paper proposes guided-mode resonant GaN grating that are implemented on a GaN-on-silicon wafer structure. Numerical simulations based on rigorous coupled wave analysis (RCWA) are performed to model multiple resonances in thick GaN membranes. Back wafer etching of freestanding GaN membranes is used as a tuning mechanism to manipulate the optical performance in the visible wavelength range. Ang... View full abstract»

• ### Analysis of Cavity–Waveguide Coupling in Two-Dimensional Photonic Crystals

Publication Year: 2014, Article Sequence Number: 4700309
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We investigate theoretically cavity-waveguide coupling in 2-D photonic crystals. In using photonic crystal cavities in a device such as an optical circuit, the cavities must be coupled to a waveguide. For optimum performance, careful design of the device structure is necessary. In order to find out the rule for the design, we evaluate coupling strength by carrying out finite-difference time-domain... View full abstract»

• ### Efficient Third-Harmonic Generation From 2 $\mu \hbox{m}$ in Asymmetric Plasmonic Slot Waveguide

Publication Year: 2014, Article Sequence Number: 4800607
Cited by:  Papers (3)
| | PDF (528 KB) | HTML

We propose the asymmetrical plasmonic slot waveguide (APSW) design for third-harmonic generation (THG) from 2.25 μm. In this configuration, the phase-matching condition is fulfilled between the zeroth-order mode at fundamental frequency (FF) and the first-order mode at third-harmonic frequency (THF). Due to the asymmetrical geometry, the mode overlap between the two involved modes is signif... View full abstract»

• ### Tunable Resonances in the Plasmonic Split-Ring Resonator

Publication Year: 2014, Article Sequence Number: 4800706
Cited by:  Papers (2)  |  Patents (1)
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A nanoscale resonator composed of two metal-insulator-metal (MIM) waveguides and a split ring is investigated numerically. The multipolar plasmonic resonance modes can be excited, weakened, or even cut off by adjusting the split angle. These novel phenomena are due to the electric polarization in the split area. Odd modes exhibit when the electric field is polarized perpendicular to the split. The... View full abstract»

• ### Efficient Coupling Between Photonic and Dielectric-Loaded Surface Plasmon Polariton Waveguides With the Same Core Material

Publication Year: 2014, Article Sequence Number: 4800809
Cited by:  Papers (3)
| | PDF (735 KB) | HTML

We theoretically investigate how to efficiently couple a photonic waveguide to a dielectric-loaded surface plasmon polariton (DLSPP) waveguide when they are based on a common core material. The DLSPP waveguide is tapered and butt coupled to the photonic waveguide. First, we propose the use of a dielectric with a higher refractive index than the dielectrics of previous DLSPP waveguides. The photoni... View full abstract»

• ### Optical Interaction of a Pair of Nanoholes in Au Film via Surface Plasmon Polaritons

Publication Year: 2014, Article Sequence Number: 4800913
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The optical interaction mechanism of a nanohole pair milled in an opaque gold film by means of surface plasmon polaritons (SPPs) propagation is investigated. This interaction depends on the polarization direction of the incident light and the separation distance between the nanoholes. It is found that when the nanoholes are illuminated by a plane wave incident light polarized parallel to the axis ... View full abstract»

• ### Theoretical Analysis of Plasmonic Modes in a Symmetric Conductor–Gap–Dielectric Structure for Nanoscale Confinement

Publication Year: 2014, Article Sequence Number: 4801010
Cited by:  Papers (4)
| | PDF (798 KB) | HTML

A hybrid plasmonic waveguide is considered as one of the most promising architectures for long-range subwavelength guiding. The objective of this paper is to present a theoretical analysis of plasmonic guided modes in a symmetric conductor-gap-dielectric (SCGD) system. It consists of a thin metal conductor symmetrically sandwiched by two-layer dielectrics with low-index nanoscale gaps inside. The ... View full abstract»

• ### Design and Analysis of a Miniature Intensity Modulator Based on a Silicon-Polymer-Metal Hybrid Plasmonic Waveguide

Publication Year: 2014, Article Sequence Number: 4801110
Cited by:  Papers (3)
| | PDF (823 KB) | HTML

We propose a miniature optical intensity modulator based on a silicon-polymer-metal hybrid plasmonic waveguide. Benefiting from the high mode confinement of hybrid plasmonic waveguide and the high linear electro-optic effect of polymer material, the intensity modulator is ultra-compact with a length of only ~ 13 μm. The device is optimized using numerical simulations based on the finite ele... View full abstract»

• ### Phase-Stabilized Delivery for Multiple Local Oscillator Signals via Optical Fiber

Publication Year: 2014, Article Sequence Number: 5500408
Cited by:  Papers (3)
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In this paper, we propose and demonstrate a multiple local oscillator (LO) signal phase stabilization technique for long-distance fiber delivery. One of the LO signals, which acts as a reference single, is round-trip transferred between the central station and the remote end, carrying the phase variation arises from perturbations of the fiber link. The wavelength of the optical carrier is adjusted... View full abstract»

• ### Damping Microvibration Measurement Using Laser Diode Self-Mixing Interference

Publication Year: 2014, Article Sequence Number: 5500508
Cited by:  Papers (2)
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Based on the study of laser diode self-mixing interference effects, a simple damping microvibration measuring method that can accurately obtain the damping factor is presented. The damping factor is solved by recording the period and counting the fringe number of the self-mixing signal. The damping factor of 0.0483 s-1 with a standard deviation of 0.0013 and the coefficient of variation... View full abstract»

• ### Photonic Generation of Radio-Frequency Waveforms Based on Dual-Parallel Mach–Zehnder Modulator

Publication Year: 2014, Article Sequence Number: 5500608
Cited by:  Papers (6)
| | PDF (555 KB) | HTML

We report a photonic approach to generating radio-frequency (RF) waveforms based on a dual-parallel Mach-Zehnder modulator (DPMZM) driven by a sinusoidal RF signal. One of the sub-MZMs (MZM1) of the DPMZM is driven by the sinusoidal RF signal, whereas the other sub-MZM (MZM2) has no driven signal. In this way, the powers of even- and odd-order sidebands can be separately controlled by adjusting th... View full abstract»

• ### Collimation Sensing With Differential Grating and Talbot Interferometry

Publication Year: 2014, Article Sequence Number: 6100210
Cited by:  Papers (2)
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The collimation of monochromatic light in optical metrology is of great importance for its determination of the accuracy of physical measurement. This paper proposes a novel collimation testing method with the differential grating (DG) characterized by its high sensitivity. In the process of measurement, the monochromatic light is incident upon a linear grating and is then projected onto a DG to c... View full abstract»

## Aims & Scope

IEEE Photonics is an online-only rapid publication archival journal of top quality research at the fore-front of Photonics.  Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum.

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## Meet Our Editors

Editor-in-Chief
Niloy Dutta
Physics Department
University of Connecticut
Storrs, CT 06269
nkd@phys.uconn.edu
Tel: +1 860-486-3481
Fax: +1 860-486-3346