A5082727015- Photonic and Optical Devices
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Photonic Communication Systems
- Advanced Optical Network Technologies
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Advanced MEMS and NEMS Technologies
- Semiconductor Quantum Structures and Devices
- Orbital Angular Momentum in Optics
- Photonic Crystal and Fiber Optics
- Optical Coherence Tomography Applications
- Neural Networks and Reservoir Computing
- Random lasers and scattering media
- Mechanical and Optical Resonators
- Radio Frequency Integrated Circuit Design
- Interconnection Networks and Systems
- Laser-Matter Interactions and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Mobile Agent-Based Network Management
- Physics of Superconductivity and Magnetism
- Advanced Optical Sensing Technologies
- Photonic Crystals and Applications
- Quantum and electron transport phenomena
- Software System Performance and Reliability
Nokia (United States)
2016-2025
Providence College
2018-2025
University of Antwerp
2022-2024
UK Power Networks
2023
University of British Columbia
2022
Scottish Power (United Kingdom)
2021
Super Stars Literacy
2016
Alcatel Lucent (Germany)
1999-2015
Università di Camerino
2013
National Enterprise for NanoScience and NanoTechnology
2013
Celebrating the 20th anniversary of Optics Express, this paper reviews evolution optical fiber communication systems, and through a look at previous 20 years attempts to extrapolate fiber-optic technology needs potential solution paths over coming years. Well aware that 20-year extrapolations are inherently associated with great uncertainties, we still hope taking significantly longer-term view than most texts in field will provide reader broader perspective encourage much needed...
Exploiting a particular wave property for application necessitates components capable of discriminating in the basis that property. While spectral or polarisation decomposition can be straightforward, spatial is inherently more difficult and few options exist regardless type. Fourier by lens rare simple example great practical importance simplicity; two-dimensional beam into its linear momentum components. Yet this often not most appropriate basis. Previously, no device existed orbital...
Based on a variety of long-term network traffic data from different geographies and applications, in addition to scaling trends key information communication technologies, we identify fundamental disparities between the technologies used generate process those transport data. These could lead falling behind its required capabilities by factor approximately 4 every five years. By 2024, predict need for 10-Tb/s optical interfaces working 1-Pb/s systems. To satisfy these needs, multiplexing...
Abstract Silicon photonic devices and integrated circuits have undergone rapid significant progresses during the last decade, transitioning from research topics in universities to product development corporations. photonics is anticipated be a disruptive optical technology for data communications, with applications such as intra-chip interconnects, short-reach communications datacenters supercomputers, long-haul transmissions. Bell Labs, organization of Alcatel-Lucent, network system vendor,...
Abstract Data rates in optical fiber networks have increased exponentially over the past decades and core-networks are expected to operate peta-bit-per-second regime by 2030. As current single-mode fiber-based transmission systems reaching their capacity limits, space-division multiplexing has been investigated as a means increase per-fiber capacity. Of all fibers proposed date, multi-mode highest spatial channel density, signals traveling orthogonal modes share same fiber-core. By combining...
The design and performance of several generations wavelength-selective 1/spl times/K switches are reviewed. These optical subsystems combine the functionality a demultiplexer, per-wavelength switch, multiplexer in single, low-loss unit. Free-space optics is utilized for spatially separating constituent wavelength division multiplexing (WDM) channels as well space-division switching from an input fiber to one K output fibers (1/spl functionality) on channel-by-channel basis using...
Exciton bound states in solids between electrons and holes are predicted to form a superfluid at high temperatures. We show that by employing atomically thin crystals such as pair of adjacent bilayer graphene sheets, equilibrium superfluidity electron-hole pairs should be achievable for the first time. The transition temperatures well above liquid helium Because sample parameters needed device have already been attained similar devices, our work suggests new route toward realizing...
We present a microelectromechanical systems-based beam steering optical crossconnect switch core with port count exceeding 1100, featuring mean fiber-to-fiber insertion loss of 2.1 dB and maximum 4.0 across all possible connections. The challenge efficient measurement optimization connections was met by an automated testing facility. resulting feature stability better than 0.2 over days, without any feedback control under normal laboratory conditions.
We demonstrate mode-multiplexed 90×90 MIMO transmission over all nine mode groups of a 26.5-km graded-index multimode fiber span, achieving record spectral efficiency 202 bit/s/Hz.
In the evolution of optical networks, spectral efficiency (SE) enhancement has been most cost-efficient and thus main driver for capacity increase decades. As a result, development transport systems focused on <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$C$ </tex-math></inline-formula> - notation="LaTeX">$L$ -bands, where silica fiber exhibits lowest attenuation, erbium-doped amplifiers provide an...
This paper describes Si-micromachined two-axis beam-steering micromirrors and their performance in 256 × 256- 1024 1024-port large optical cross-connects (OXCs). The high-reflectivity wavelength-independent mirrors are electrostatically actuated; capable of large, continuous, controlled, dc tilt any direction at moderate actuation voltages; allow setting times a few milliseconds. Packaged two-dimensional (2-D) arrays containing independently addressable identical 1296 used to build fully...
Conventional optical coherent receivers capture the full electrical field, including amplitude and phase, of a signal waveform by measuring its interference against stable continuous-wave local oscillator (LO). In communications, powerful digital processing (DSP) techniques operating on field can effectively undo transmission impairments such as chromatic dispersion (CD), polarization mode (PMD). Simpler direct detection do not have access to therefore lack ability compensate for these...
Forthcoming capacity scaling requirements of optical networks and advances in fiber communications beyond the omnipresent single-mode operating over conventional band introduces new opportunities challenges for exploiting expanded spectral spatial resources available fiber-optic network designs. The degrees freedom introduce utilization tradeoffs that can be leveraged under different applications. After briefly reviewing supporting building elements (emerging types, multiplexers, switches,...
The problem of modeling GaAs MESFETs for calculations intermodulation and spurious responses is examined. It shown that an adequate model must express not only the absolute I/V characteristics device, but also derivatives those characteristics. demonstrated these are dominant in determining levels, common approaches to do very well. Finally, a new MESFET gate characteristic (the nonlinearity most FETs) accurate through at least third derivative proposed.< <ETX...
The ongoing growth of data traffic from existing and new applications poses a challenge to the packet-switched network infrastructure. High-capacity transport can be achieved in such networks by using dense wavelength-division-multiplexed systems, reconfigurable optical add-drop multiplexers allow layer provision wavelength-based circuits between routing nodes. However, construction high-capacity packet routers provides significant scaling issues due complexity, interconnect, thermal limits....
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text J. Gripp, E. Simsarian, D. LeGrange, P. Bernasconi, and T. Neilson, "Photonic Terabit Routers: The IRIS Project," in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2010), paper OThP3. Export BibTex Endnote (RIS) HTML Plain alert Save article
We design a spatial mode multiplexer using multi-plane light conversion which can address all 45 modes of 50-μm graded index multimode fiber at 1550 nm with 14 phase planes. The mode-dependent loss is below 2-dB across 100 nm.
We report on the ultra-wideband transmission of 254 PCS-64QAM channels over 300 km SSMF. demonstrate a 107-Tb/s throughput continuous 103 nm optical bandwidth using backward Raman pumping and SOA technology.
We report on the use of semiconductor optical amplifiers (SOAs) to extend bandwidth next generation systems 100 nm and beyond. After discussing technological progress motivation for rekindling interest in SOAs line amplification, we describe innovative approach developed realization ultra-wideband (UWB) SOAs. Leveraging custom design singly polarized provide gain over 100+ bandwidth, a polarization diversity architecture realize UWB-SOA modules. Embedded compact package, UWB amplifier...
We experimentally demonstrate high-dimensional, polarization-resolved, 3D spatiotemporal toroidal beams delivered through a multimode optical fiber (MMF). Our approach leverages advanced spectral and spatial shaping techniques, combined with full polarization control, to achieve precise manipulation of the amplitude, phase, beams. These feature highly customizable geometries, allowing independent control their aspect ratio orientation. ability deliver complex directly at output, enabling...
This study investigates the use of subsea communication cables as seismic monitoring instruments. We simulate waveforms observed on 17 spans Iceland-Ireland telecommunications cable, following framework presented in Fichtner et al., 2022.&#160; an open source spectral-element wave propagation code (SPECFEM3D GLOBE) to strain rate at a dense set points along cable. The simulations incorporate realistic physical conditions, including effects topography, gravity, crustal structure, ocean...
&#160;About 70% of the Earth's surface is covered by ocean, making observations seismic waves difficult and expensive in vast regions.&#160; Recently, have been observed using transmission fiber-optic sensing on trans-oceanic subsea cables, them an exciting potential addition to global networks (f.ex. Marra 2018,2022; Zhan, 2021; Mazur 2024).&#160;&#160;In this work we use a distributed fiber optic (DFOS) prototype capable measuring integrated strain between each repeater...
A 1296-port MEMS transparent optical crossconnect with 5.1dB/spl plusmn/1.1dB insertion loss at 1550 nm is reported. Measured worst-case crosstalk in a fabric was n38 dB and nominal switching rise/fall times were 5 ms. 2.07 petabit/s switch capacity verified upon cross-connecting forty-channel by 40 Gb/s DWDM data stream through prototype fabric.
Optical interconnects have the potential to realize a scalable intra- and inter-chip communication infrastructure. They can meet large bandwidth capacity stringent latency requirements in power-efficient fashion. Integration of photonics on silicon provides path low-cost highly platform for this application. Here, we report an intra-chip 10×10 Gb/s optical link based large-scale photonic integrated circuit with 72 functional elements. Furthermore, is reconfigurable as switch or broadcasting...