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Seminar of the Institute 2006

 

 

Prof. J. Leuthold; Prof. W. Freude

Location: NTI, Bldg. 30.10, Seminarraum 3.42

 

December,13, 2006, Wednesday, 10:00

Topic: ECOC Review
Speaker: A. Marculescu

Topic: Adaptive equalization with time lenses
Speaker:
W. Freude

 

December, 06, 2006, Wednesday, 10:00

Topic: Analysis of optimal filtering technique for SOA based wavelength conversion (Diplomarbeit, 2. Zwischenvortrag) 
Speaker: Mr. Yang Jiao

Topic: ECOC Review
Speaker: A. Maitra

 

November, 29, 2006, Wednesday, 10:00

Topic: ECOC Review
Speaker: P. Vorreau; T. Vallaitis

 

November, 22, 2006, Wednesday, 10:00

Topic:
-
Erstellung eines Simulationsmodells für eine optische Sendequelle (LED)
(30 min)
- Aufbau und Test von optischen Systemen mit elektrisch gesteuerten Flüssiglinsen
(10 min)
- Analog-Digital-Wandlerplatine für ADSP-21065L-Entwicklungsboard von Analog Devices (5 min)
Speaker: Dipl.-Ing. (FH) Robert Franke, M.Sc.

Topic: Conference, Photonic in Switching
Speaker: J. Wang

 

November, 15, 2006, Wednesday, 10:00

Topic: ECOC Review
Speaker: G. Böttger

Topic: Setup for time-resolved chip measurements of high bit-rate optical signals
Speaker: L. Jacome

 

November, 08, 2006, Wednesday, 10:00

Topic: Entwurf und Implementierung eines adaptiven Frequenzbereichsentzerrers für die Powerline- Kommunikationstechnik
Speaker:
Th. Mathis

Topic: All-Optical Wavelength Conversion based on a single Semiconductor Optical Amplifier assisted by a Pulse Reformatting Optical Filter
Speaker: Jingshi Li

October, 25, 2006, Wednesday, 10:00

Topic: Characterization of impact ionization coefficients in Al(Ga)InAs/GaInAs avalanche photodiodes
Alcatel Thales III-V Lab
Speaker: Frau Alexandra Ludwig

 

September, 22, 2006, Friday, 10:00

Topic: Left-handed leaky wave antenna for millimeter-wave applications
Speaker: Vadim Isakov



September, 20, 2006, Wednesday, 10:00

Topic: Characterization of Ultra-Fast Nonlinear Interaction and Filter Design for Optical Communication Devices. (Diplomarbeit, Endvortrag)
Speaker:
Boris-Alexander Bolles

Topic: Ideal Trajectory for Ultracompact Low-Loss Waveguide Bends
Speaker:
Chr. Koos

 

September, 15, 2006, Friday, 10:00

Topic: Study of Optical Differential 8-Level Phase Shift Keying Demodulation/Detection
Speaker:
Mr. Muhammad Hafeez Chaudhary

Topic: Description of Sagnac loop with a semiconductor optical amplifier
Speaker:
Miss Li Li

Topic: Analysis of optimal filtering technique for SOA based wavelength conversion (Diplomarbeit, Zwischenvortrag) 
Speaker:
Mr. Yang Jiao

 

August, 02, 2006, Wednesday, 10:00

Topic: OSA Slow and fast Light topical Meeting
Speaker:
J.-M. Brosi

Topic: Review of NOC/OC&I
Speaker:
M. Röger

 

July, 26, 2006, Wednesday, 10:00

Topic: (Diplomarbeit, Endvortrag)
Speaker:
M. Waldow

 

July, 19, 2006, Wednesday, 10:00

Topic:
Speaker:

 

July, 12, 2006, Wednesday, 10:00

Topic: Broadband Slow Light in a Photonic Crystal Line Defect WaveguideVortrag für Tagung "OSA Slow and Fast Light"
Speaker:
J.-M. Brosi

 

July, 05, 2006, Wednesday, 11:45

Topic: "Simulation und Optimierung von Faser-Chip-Kopplung"
Speaker: C. Tzebia

 

June, 14, 2006, Wednesday, 10:00

Topic: (Diplomarbeit, Zwischenvortrag)
Speaker: M. Waldow

Topic: (Master-Arbeit, Endvortrag)
Speaker: M. Monllor-Tormos

Topic: "Embedding a Numerical SOA Model into an Optical System Simulator" (final presentation Studienarbeit)
Speaker: Qiang Wang

Topic: (Diplomarbeit, 2. Zwischenvortrag)
Speaker: C. Tzebia

 

June, 09, 2006, Friday, 10:00

Topic: "Investigation of an Optical Recirculating Loop Testbed with a System Simulator" (final presentation Master Thesis )
Speaker: Jorge Hueso Giner

Topic: "Dynamics of linewidth-enhancement factor in semiconductor optical amplifiers"
Speaker:
J. Wang

 

May, 31, 2006, Wednesday, 10:00

Topic: (Diplomarbeit, 2. Zwischenvortrag)
Speaker: C. Tzebia (delayed)

 

May, 24, 2006, Wednesday, 10:00

Topic: (Diplomarbeit, Endvortrag)
Speaker: Ch. Klamouris

 

May, 17, 2006, Wednesday, 10:00

Topic: "Hall-Effekt in der Nähe des quantenkritischen Punkts von CeCu6-xAux"
Speaker: M. Röger
Abstract: In der Legierungsreihe CeCu6-xAux wird durch das Ersetzen von Kupfer durch Gold antiferromagnetische Ordnung bei tiefen Temperaturen induziert. Bei einer bestimmten Konzentration konnte quantenkritisches Verhalten beobachtet werden. Dieses näher zu untersuchen und die Fluktuationen, die den Phasenübergang voran treiben, zu identifizieren war Ziel dieser Arbeit. Als Messmethode wurde hier die Hall-Konstante verwendet.

 

May, 10, 2006, Wednesday, 10:00

Topic: "Optical Fiber Communications Conference 2006, Review on latest trends"
Speaker: IHQ scientific staff

 

May, 03, 2006, Wednesday, 10:00

Topic: "Optical Fiber Communications Conference 2006, Review on latest trends"
Speaker: IHQ scientific staff

 

April, 25, 2006, Tuesday, 11:30

Topic: "Optimal Filter for Nonlinear Optical Communication Devices"
Speaker: B. Bolles

Topic: "Entwurf eines integrierten optischen Modulators"
Speaker: M. Waldow

 

April, 19, 2006, Wednesday, 10:00

Topic: (Diplomarbeit Zwischenvortrag)
Speaker): Ch. Klamouris

Topic: "Optical Fiber Communications Conference 2006, Review on latest trends"
Speaker: IHQ scientific staff


April, 12, 2006, Wednesday, 10:00

Topic 2. Zwischenvortrag zur Master-Arbeit
Speaker): M. Monllor-Tormos

Topic "Optical Fiber Communications Conference 2006, Review on latest trends"
Speaker): Prof. J. Leuthold

 

April, 05, 2006, Wednesday, 10:00

Topic: "Investigation of an Optical Recirculating Loop Testbed with a System Simulator"
Speaker: Jorge Hueso Giner

 

March, 29, 2006, Wednesday, 10:00

Topic: "How to measure the isotopic composition of water vapour in situ in higher atmospheric regions?" 
Speaker: Dipl.-Ing.(FH) Christoph Dyroff
Abstract:Studies of the transport processes of water vapour into the upper troposphere and the lower stratosphere will contribute to an improved understanding of the water vapour budget in these atmospheric regions. This will help to assess the potential change of water vapour and its impact to the Earth’s radiation budget and climate change.[1]
The H2O mixing ratios typically range between a few thousand parts per million by volume (ppmv) in the tropical troposphere to about 5 ppmv in much dryer lower stratospheric regions, giving rise to the need for a high dynamic range as well as very low detection limits of the order of 1×10−6 fractional absorbance to assess even high dD values around −70 %.
In this talk suitable spectral regions, ranging from the near-infrared to the mid-infrared, as well as the constraints of their selection are presented. An instrumental design along with calibration procedures for the in situ measurement of the isotopic ratios d18O, d17O, and dD in water vapour by means of tunable diode laser spectroscopy is given, and preliminary laboratory results are discussed.
[1] A. Zahn, J. Atmos. Chem., 39, 303-325 (2001).

 

11:00

Topic: "Application of SILVACO Device Simulation Framework"
Speaker:
O. Shulika
Abstract: Use of commercial simulation programs allows quickly estimate performances of almost any semiconductor device. However, commercial programs have disadvantages as well. The main disadvantage is that simulation strategy developed by authors of a program is imposed on a user. This strategy is not always optimal. Therefore, often, the task of a user comes to that how to get round disadvantages of a program by resources of the same program. In this report the short review of the simulators by SILVACO International will be given. We will consider the ATLAS Device Simulation Framework in more detail and clarify how one can apply this tool to investigation of the physics of semiconductor optical amplifiers.

 

March, 01, 2006, Wednesday, 10:00

Topic: "Diskussion der HL-Prüfung" (Wie erteilt man Übungen)
Speaker: Prof. J. Leuthold

 

February, 22, 2006, Wednesday, 9:00

Topic: "Hochschulpatente und deren Verwertung"
Speaker: Dr.-Ing. Florian Schwabe, TLB GmbH, Karlsruhe

 

February, 15, 2006, Wednesday, 10:00

Topic: "Fotoleitung in HgCdTe/HgTe - Quanten-Hall-Detektoren"
Speaker: Rene Bonk

 

February, 08, 2006, Wednesday, 10:00

Topic: "Implementation of a fiber based communication system for sensor applications"
Speaker: C. Klamouris

 

February, 01, 2006, Wednesday, 10:00

Topic: Title will be publication soon
Speaker: M. Monllor Tormos

Topic: Title will be publication soon
Speaker: Stefan Scharring

 

January, 25, 2006, Wednesday, 10:00

Students Lectures

 

January, 18, 2006, Wednesday, 10:00

Topic: "Cascadability of logic functions"
Speaker: P. Vorreau

 

January, 11, 2006, Wednesday: No Talk

 

December, 21, 2005, Wednesday, 10:00

Topic: "InGaAsP Single Active Ring Resonator Lasers and their Applications in Nonlinear Optics"
Speaker:
Anastasiya Golovina

December, 21, 2005, Wednesday, 10:45

Topic: "Novel Scheme for all-optical Wavelength Conversion / Simulation and Analysis"
Speaker:
Mr. Jiao Yang

 

December, 14, 2005, Wednesday: No Talk



December, 07, 2005, Wednesday, 10:00

Topic: "Simulation of active regions of semiconductor lasers and optical amplifiers based on quantum wells"
Speaker: Alexey Shulika aus Kharkov, Ukraine
Abstract: Resent results of simulation of QW structures will be presented. Particular attention will be given to asymetrical multiquantum-well structures.

 

November, 30, 2005, Wednesday, 10:00

Topic: "How to write a paper"
Speaker: Prof. J. Leuthold

 

November, 23, 2005, Wednesday, 10:00

Topic: "APOC" in Shanghai
Speaker: Prof. J. Leuthold

Fruehere Vortraege aus 2006, 2007, 2008, 2009, 2010, 2011