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Seminar of the Institute 2009

 

Prof. J. Leuthold; Prof. W. Freude

Location: NTI, Bldg. 30.10, Seminar-room 3.42
Time: Wednesday, 10:00

December 16, 2009 Setup of a Radio over Fiber Transmitter- and Receiver-Unit for Gbit/s Transmission Experiments with State-of-the-art Analog and Digital Modulation Formats
Matthias Scherer (Introductory Talk, Diplomarbeit)

SOA for analogue signals with advanced modulation formats

Jörg Pfeifle (Introductory Talk Diplomarbeit)

ECOC 2009 Review

M. Moch
December 09, 2009
Start: 9:45
Investigation of OFDM receiver algorithms
Hammam Shakhtour (Final Talk, Master Thesis)

Optical Properties of Self Assembled Metal-Organic Layers
Matthias Jäger (Final Talk, Diplomarbeit)

Simulation and Performance Analysis of Radio over Multimodefiber Systems
Alejandro Sanchez (Final Talk, Diplomarbeit)

December 02, 2009 Large IPDR in QD_SOA
Johanna Gütlein (Final Talk)

Low-cost couplers for optical power and data transmission
Martin Reichel (Final Talk Studienarbeit)
November 25, 2009 Waveguides for Ultrafast Modulators
Nicole Lindenmann (Final Talk Diplomarbeit)

SOA for phase-encoded signals
Gregor Huber (Introductory Talk Diplomarbeit)
November 18, 2009 Free Space Delay Interferometer Accurate Control and Stabilisation
Kai Worms (Final Talk)

ECOC 2009 Review

S. König
November 12, 2009 Start 11:00
Activities of the Photonics Group at the Helsinki University of Technology
Prof. Seppo Honkanen
November 11, 2009 Plasmonic Waveguides for Ultrafast Modulator's
Argishti Melikyan (Final Talk, Master Thesis)

ECOC 2009 Review
D. Hillerkuß
October 21, 2009 Implementation of an ODFM Multi Format Transmitter
Rene Schmogrow (Final Talk Master Thesis)

Investigation of OFDM receiver algorithms
Hammam Shakhtour (Master Thesis Intermediate Talk)

October 7, 2009 Simulation and Performance Analysis of Radio over Multimodefiber Systems
Alejandro Sanchez (Intermediate Talk)
September 30, 2009 Free-space Lasercom
David Caplan, MIT Lincoln Labs, USA

September 29, 2009
Start 14:00
A Statistical Treatment of Cross-Polarization Modulation in DWDM Systems with Applications to Data Transmission
Dr. Marcus Winter (Fachgebiet Hochfrequenztechnik, TU Berlin)

Abstract
After briefly reviewing the theory of cross-polarization modulation (XPolM), we present a model to predict stochastic properties of the effect for a large range of transmission links with fibers of arbitrary dispersive properties. These properties include the distribution of the polarization states of an initially polarized signal after propagation, as well as the nonlinear degree of polarization reduction as a measurable quantity sufficient to describe the magnitude of the effect.
Furthermore, we examine how XPolM affects the transmission of DPSK data as well as RZ-QPSK-modulated data in polarization-multiplexed systems (being a prime candidate for 100Gbit Ethernet).
September 23, 2009 Free Space Delay Interferometer Accurate Control and Stabilisation
Kai Worms (Intermediate Talk)

Large IPDR in QD_SOA
Johanna Gütlein (Intermediate Talk)
September 09, 2009 Waveguides for Ultrafast Modulators
Nicole Lindenmann
September 02, 2009 Broadband Dispersion Compensating Fibers and Fiber Amplifiers
Frau Dr. Kamna Pande, Inter University Accelerator Center, New Delhi, Indien
Abstract

August 26, 2009 Plasmonic Waveguides for Ultrafast Modulator's
Argishti Melikyan (Intermediate Talk, Master Thesis)
August 19, 2009
Start 11:00
Implementation of an OFDM Capable Optical Multi Format Transmitter
René Schmogrow (Intermediate Talk Diplomarbeit)

Investigation of a Concept for Next Generation Terabit Ethernet Transmission Systems

Michael Teschke (Final Talk Diplomarbeit)
August 12, 2009 Theoretical Explanation of Large Input Power Dynamic Range in QD-SOA
Johanna Gütlein (Introductory Talk Diploma Thesis)

Setup of a Radio over Fiber Link and Experimental Investigations on the Overall Fiber Link Performance
Arnab Bhattacharya (Final Talk Studienarbeit)
July 29, 2009 Connectivity of nanocrystalline zirconium oxide (ZrO2)
Dipl.-Phys. Stefan Abel
July 22, 2009 OFC'2009 Review
Martin Moch

Implementation of an Optical Comb Source
Geirfinnur Sigurdsson (Introductory Talk Studienarbeit)
July 15, 2009 OFC'2009 Review
Dietmar Korn

Optical Properties of Self Assembled Metal-Organic Layers
Matthias Jäger (Introductory Talk, Diplomarbeit)

July 08, 2009 OFC'2009 Review
Jingshi Li

Investigation of OFDM receiver algorithms

Hammam Shakhtour (Master Thesis Introductory Talk)

Stabilisation of an optical receiver
Kai Worms (Introductory Talk Diplomvortrag)
July 1, 2009 OFC'2009 Review
Thomas Vallaitis
June 25, 2009 15:30 All-optical 2R regeneration of multi-channel WDM signals
Prof. Michael Vasilyev, Department of Electrical Engineering, University of Texas at Arlington
abstract
June 24, 2009 A new method to fabricate optical nano-wire waveguides
Robert Palmer (Einführungsvortrag Diplomarbeit)

Setup of a Radio over Fiber Link and Experimental Investigations on the Overall Fiber Link Performance
Arnab Bhattacharya (Einführungsvortrag Studienarbeit)
June 17, 2009
OFC'2009 Review
René Bonk

General trends in high speed optical systems and product development activities within SHF for 100G system research & development
Dr. Thomas Lee, SHF Communication Technologies AG, Berlin

The presentation is intended as a brief overview of current high speed system development, and the general trend in the 100 GbE environment as the much awaited outcome of the IEEE standard activity will reach its conclusion in mid-2010.  The second part of the talk is to give an outline of SHF’s high speed test and measurement development activity positioned to address the needs of the 100 Gbps R&D community

Activities in the Department of Electronic Science, University Delhi
Prof. Enakshi Khular Sharma
June 12, 2009
15:30
Ge/SiGe Multiple Quantum Wells: Electronic States and Optical Properties
Eleonora Gatti

The integration of optical devices and interconnects on CMOS technology appears as one of the most promising approaches to increase the performances of electronic devices. Ge/SiGe multiple quantum wells (MQWs) represent an interesting way to reach such an integration because of their compatibility with Si technology and their good optical properties due to quantum confinement. The results of one of the first detailed studies of the optical properties and electronic states of these structures via optical absorption and photoluminescence (PL) measurements are presented. Absorption spectra are characterized by sharp excitonic transitions involving quantum confined states at Г point even at room temperature, confirming optical properties similar to those of direct gap semiconductors. Continuous wave PL spectra show for the first time recombination involving quantum confined states in Ge QWs at the Г and the L points and confirm the type I band alignment of these structures. Time-resolved PL preliminary measurements provide decay times of few ns. These results concur to achieve a detailed picture of the exciton recombination in Ge/SiGe multiple quantum wells.
June 10, 2009 New Protocol for an Optically Powered Heterogeneous Sensor Network
Matthias Hoh (Final Talk Studienarbeit)

OFC'2009 Reviev
David Hillerkuss
June 03, 2009 Investigation of a Concept for Next Generation Terabit Ethernet Transmission Systems
Michael Teschke (Intermediate Talk Diplomarbeit)

OFC'2009 Review
Philipp Vorreau
May 27, 2009 Dynamic impairment constrained optical network planning and operation
Ioannis Tomkos, AIT Greece 

Rekonfigurierbare Hardware für Ultra-Low Power Over Fiber Anwendungen
Michael Dreschmann (Final Talk Diplomarbeit)
May 20, 2009 Experimental Characterization of Silicon-Organic-Hybrid (SOH)
Siegwart Bogatscher (Final Talk Diplomarbeit)

Plasmonic Waveguides for Ultrafast Modulators
Argishti Melikian (Introductory Talk, Master Thesis)
May 13, 2009 OFC'2009 Review
Moritz Röger

Implementation of an OFDM Capable Optical Multi Format Transmitter
René Schmogrow (Introductory Talk Diplomarbeit)

Investigation of Radio-Over-Fiber Systems
Alejandro Sanchez (Introductory Talk Master Thesis)
April 29, 2009 OFC'2009 Review
Andrej Marculescu
April 22, 2009
14:00,
HS 9, Bldg. 20.40
Silicon Photonics at IMEC
Wim Bogaerts
April 15, 2009 A New Analytical Model for the Field of Microstructure Optical Fibers
Prof. Anurag Sharma, Physics Department, Indian Institute of Technology Delhi
April 08, 2009
Experimental Characterization of Silicon-Organic-Hybrid (SOH)
Siegwart Bogatscher (Intermediate Talk Diplomarbeit)

Metal-Insulator-Transition in disordered, interacting Fermi systems within exact Kohn-Sham potentials
Density Functional Theory (DFT) is one of the most widely used numerical tools to study properties of interacting Fermi systems. However it is not clear, if the DFT is abel to discribe the physics beyond the groundstate energy. In our work we consider the question whether DFT is able to describe the quantum phase transitions based on the interplay of disorder and interaction. To this end we calculate exact Kohn-Sham potentials for disordered, interacting, half-filled, one-dimensional Fermi systems from the local densities obtained from the Density Matrix Renormalization Group (DMRG) calculations. In the framework of Anderson localization one-dimensional systems are always localized. However, for attractive interaction the real system undergoes a phase transition to a metallic phase at a finite interaction. Here we report on the manifestation of this phase transition in the effective non-interacting DFT description.
Martin Moch
April 01, 2009 Investigation of a Concept for Next Generation Terabit Ethernet Transmission Systems
Michael Teschke (Introductory Talk Diplomarbeit)
March 31, 2009
15:00
Summary of the CMOS Photonics School
Luca Alloatti
March 19, 2009
10:00
Improvement of the setup to experimentally measure the absolute extinction cross section of individual magnetic split-ring resonators
In order to completely control an electromagnetic wave, it is necessary to have access to both, its electric and its magnetic component. Using microscopic, artificial electric and magnetic dipoles, metamaterials potentially provide the needed tool to do so. Split-ring resonators (SRR) are one possibility to realize a magnetic dipole.
While the properties of SRR-arrays have already been explored, the measurement of the extinction cross section of one single, or few SRRs is necessary to understand their individual properties, and to learn about the interaction between few of those "artificial atoms".
As this has been realized experimentally by Husnik et al. the goal of this diploma thesis was to considerably decrease the duration of measurement based on the original setup.
Jens Maisenbacher
March 18, 2009 O-Band WDM for HFC Access Networks
Sebastian Neuhäuser (Final Talk Diplomarbeit)

OFC Talk
A. Marculescu
March 17, 2009 OFC Talks
R. Bonk, T. Vallaitis
March 11, 2009 Fernfeldmeßplatz
Thomas Schellinger (Final Talk Studienarbeit)
March 04, 2009 Design of Optimum Filtering Schemes for the Wavelength Converters based on Bulk SOAs
Dhanamaya Karki (Schlussvortrag Masterarbeit)

Agilent Demonstrationsplatine für Oszilloskop
Adam Polak (Doppeldiplom Karlsruhe-Gdansk)
February 25, 2009 Amplifiers for Reach Extension in Future Access Networks
Akhmet Tussupov (Final Talk Masterthesis)

Amplitude and Phase Dynamics in Silicon Compatible Waveguides with Highest Kerr-Nonlinearities

Nicole Lindenmann (rehearsal DPG Tagung: Photonik)
February 18, 2009
Spatial Entanglement Characterization in a Biphoton Beam Several schemes in quantum imaging rely on multi-photon absorption.
Therefore a detailed knowledge of the temporal and spatial correlations of the photons used is desired. The correlations of space-momentum entangled biphotons are investigated. A pair of photons is generated by type II parametric down conversion and subsequently a biphoton is created utilizing a Hong-Ou-Mandel interference. To obtain a complete mapping of the biphoton’s space and momentum cross sections, the near and far field of the crystal is analysed by a Hanbury-Brown-Twiss like setup with two single mode fiber probes.
Dipl.-Phys. Dietmar Korn
February 11, 2009 Signal quality in subcarrier-multiplexed transmission systems
Sebastian Neuhäuser (Intermediate Talk)

Contact Design of MZI Modulators
Julian Groß (Final Talk Studienarbeit)
February 4, 2009 ECOC 2008 - Review
Swen König

Report on Optical Isolation by Indirect Interband Photonic Transitions (Z. Yu, S. Fan, Nature Photonics vol. 3 Feb 2009) with SAW-supplements (Feb 7, 2009)
Wolfgang Freude
January 28, 2009 Coplanar Electrode Design for Electro-Optic Modulators on SOI
Simon Schneider (Final Talk of Student Research Projekt)

ECOC 2008 - Review
Swen König
January 21, 2009 Receiver Software for optical vector analyzer
Kai Worms (Endvortrag Studienarbeit)
January 14, 2009 Implementation of a Coherent Optical Free-Space Communication System
Dipl.-Ing. Alexandra Ludwig

Design of the Turbo Switch Schemes using bulk SOAs
Dhanamaya Karki
(Intermediate Talk)

 

 

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