Ronald Holzloehner Ronald Holzlohner Ronald Holzlöhner Curtis Menyuk Gary Carter University of Maryland Baltimore County UMBC Computational Photonics Laboratory PMD Polarization Mode Dispersion Manakov CNLS Noise Linearization OFC ECOC TU Berlin Fiber Optics Vladimir Grigoryan Bill Kath covariance matrix multivariate Gaussian CRZ DMS MMC multicanonical Monte Carlo LDPC low-density parity-check codes EPA EPO European Patent Office Europäisches Patentamt European Southern Observatory ESO Laser Guide Stars LGS Domenico Bonaccini Hollow-core Photonic Crystal Fiber Hollow-core Photonic Crystal Fibre PCF HC-PCF

Ronald Holzlöhner

Alumnus

Ph.D. Student and Research Assistant Jan 1999 -- June 2003

Current Affiliation:

Ronald Holzloehner, Ph.D.
European Southern Observatory (ESO)
Office 348
Karl-Schwarzschild-Strasse 2
D-85748 Garching b. Muenchen
GERMANY
Phone: +49-(0)89-3200-6671, Fax: -6608 (dial the zero from within Germany)
Web: Click here Email: rholzloe @ eso.org (remove spaces)

private email: ronald.holzloehner @ web.de (remove spaces)
http://www.umbc.edu/photonics/home/members/rholzloehner/

Optical Fiber Communications Laboratory


UMBC web feature article, May 8, 2003.

Download my Ph.D. thesis in gzipped Postscript (double-sided, 147 pages, 620 kB) or in PDF (1.4 MB) format. You can also download the same in single line spacing (118 pages) in gzipped Postscript or in PDF format.

Have a look at some phase-space portraits of CRZ and DMS systems.

Noise evolution in a periodically stationary dispersion-managed soliton (DMS) system.

In 1998, I received a master's degree in physics from the Technical University of Berlin , Germany. My diploma thesis concerned fluctuating lipid membranes. Download the thesis here (written in English, PDF file, 750 kB).

From Sep. 94 thru Sep. 95, I have been working at the ZIB (Konrad-Zuse-Zentrum) Berlin in scientific visualization.
Click here to see some results.

Download a 23-slide talk about the noise covariance method as a PDF file (560 kB)

Solution of the Schlangen-Puzzle



PUBLICATIONS IN ARCHIVAL JOURNALS

11) R. Holzlöhner, A. Mahadevan, C. R. Menyuk, J. M. Morris, J. Zweck, "Evaluation of the very low BER of FEC Codes using dual adaptive importance sampling", Comm. Lett. 9, to appear in February 2005

10) R. Holzlöhner, C. R. Menyuk, "The use of multicanonical Monte Carlo simulations to obtain accurate bit error rates in optical communications systems", Opt. Lett. 28, pp. 1894 (2003)

9) R. Holzlöhner, C. R. Menyuk, W. L. Kath, V. S. Grigoryan, "A covariance matrix method to compute accurate bit error rates in a highly nonlinear dispersion-managed soliton system", Photon. Technol. Lett. 15, pp. 688-690 (2003)

8) O. V. Sinkin, R. Holzlöhner, J. Zweck, C. R. Menyuk, "Optimization of the split-step Fourier method in modeling optical fiber communications systems", J. Lightwave Technol. 21, pp. 61-68 (2003)

7) R. Holzlöhner, C. R. Menyuk, W. L. Kath, V. S. Grigoryan, "Efficient and accurate calculation of eye diagrams and bit error rates in a single-channel CRZ system", Photon. Technol. Lett., 14, pp. 1079-1081 (2002)

6) R. Holzlöhner, H. N. Ereifej, G. M. Carter, C. R. Menyuk, "Experimental and theoretical characterization of a 40 Gb/s Long-Haul Single-Channel Transmission System", J. Lightwave Technol. 20, pp. 1124-1131 (2002)

5) R. Holzlöhner, C. R. Menyuk, V. S. Grigoryan, W. L. Kath, "Accurate calculation of eye diagrams and error rates in long-haul transmission systems using linearization", J. Lightwave Technol. 20, pp. 389-400 (2002)

4) H. N. Ereifej, R. Holzlöhner, G. M. Carter, "Inter-Symbol interference and timing jitter measurements in a 40 Gb/s long-haul dispersion-managed soliton system", IEEE Photon. Technol. Lett. 14, pp. 343-345 (2002)

3) D. Marcuse, C. R. Menyuk, R. Holzlöhner, "Time shift of pulses due to dispersion slope and nonlinearity", IEEE Photon. Technol. Lett. 12, pp. 1611-1613 (1999)

2) R. Holzlöhner, M. Schoen, "Attractive forces between anisotropic inclusions in the membrane of a vesicle", Eur. Phys. J. B 12, pp. 413-419 (1999)

1) R. Holzlöhner, "Schweissen mit Strom", ELRAD 1, pp. 50-53 (1989)


INVITED PAPERS

7) C. R. Menyuk and R. Holzlöhner, "Modeling noise in optical communications systems", OSA Topical Meeting 2003, Vancouver, Canada. Talk TuN5, 2003

6) C. R. Menyuk, R. Holzlöhner, I. T. Lima, Jr., B. S. Marks, and J. Zweck "Advances in modeling high data rate optical fiber communication systems", to appear at SIAM Conference on Computational Science and Engineering (CSE03), San Diego, CA, 2003

5) J. Zweck, I. T. Lima, Jr., R. Holzlöhner, C. R. Menyuk, "New advances in modeling optical fiber communication systems", to appear at OSA Topical Meeting, Vancouver, Canada, 2002

4) C. R. Menyuk, R. Holzlöhner, I. T. Lima, Jr., "New approaches for modeling high data rate optical communication systems", OSA Annual Meeting 2001, Long Beach, CA, October 2001, ThFF1 (2001)

3) C. R. Menyuk, R. Holzlöhner, I. T. Lima, Jr., "Advances in modeling optical fiber transmission systems", IEEE LEOS Newsletter, pp. 21-23 (2001)

2) C. R. Menyuk, R. Holzlöhner, I. T. Lima, Jr., "Advances in modeling of optical fiber transmission systems", LEOS Summer Topical Meeting 2001, Copper Mountain, CO, July 2001, MD 1.2, pp. 5-6 (2001)

1) C. R. Menyuk, D. Wang, R. Holzlöhner, I. T. Lima, Jr., E. Ibragimov, V. S. Grigoryan, "Polarization mode dispersion in optical transmission systems", OFC 2000, Baltimore, MD, 2000, Tutorial, pp. 78-97 (2000)


CONTRIBUTED PAPERS AT CONFERENCES

11) R. Holzlöhner and C. R. Menyuk, "Accurate bit error rates from multicanonical Monte Carlo simulations", CLEO 2003, talk CThJ3, Baltimore, MD

10) R. Holzlöhner, C. R. Menyuk, W. L. Kath, V. S. Grigoryan, "A Covariance Matrix Method for Accurate Bit Error Ratios in a DWDM CRZ System," OFC 2003, talk CThJ. Download the slides here (PDF, 1.1 MB)

9) O. V. Sinkin, R. Holzlöhner, J. Zweck, C. R. Menyuk "Optimization of the split-step Fourier method in modeling optical fiber communications systems," OSA Annual Meeting 2002, Orlando, FL
Click for talk slides (PDF, 133 KB)

8) R. Holzlöhner, C. R. Menyuk, V. S. Grigoryan, W. L. Kath, "Direct calculation of the noise evolution in a highly nonlinear transmission system using the covariance matrix", CLEO 2002, talk CThG5

7) R. Holzlöhner, C. R. Menyuk, V. S. Grigoryan, W. L. Kath, "Efficient and accurate computation of eye diagrams and bit error rates in a single-channel CRZ system", CLEO 2002, poster CThO44 Poster in PDF format

6) R. Holzlöhner, C. R. Menyuk, V. S. Grigoryan, W. L. Kath, "Accurate calculation of eye diagrams and error rates in long-haul transmission systems using linearization", UMBC Student Conference (2002)

5) R. Holzlöhner, H. N. Ereifej, G. M. Carter, C. R. Menyuk, "Timing jitter in a 40 Gb/s dispersion-managed soliton system", OFC 2002, talk ThQ2

4) R. Holzlöhner, C. R. Menyuk, V. S. Grigoryan, W. L. Kath, "Accurate eye diagrams and error rates using linearization", ECOC 2001, poster P41, Amsterdam, Holland, September 2001. Click here for poster in HTML form.

3) R. Holzlöhner, C. R. Menyuk, V. S. Grigoryan, W. L. Kath, "Accurate calculation of eye diagrams and error rates in long-haul transmission systems", OFC 2001, Anaheim, CA, March 2001, paper MF3.

2) R. Holzlöhner, S. Hess, "Fluidmembranen mit anisotropen Einschlüssen", Spring Meeting 1998 of DPG (German Physical Society), Regensburg, Germany, March 1998.

1) R. Holzlöhner, J. B. Fournier, S. Hess, "Elastomechanik von Lipidmembranen mit anisotropen Einschlüssen", Spring Meeting 1997 of DPG (German Physical Society), Muenster, Germany, March 1997.


PUBLICATIONS IN PREPARATION

1) R. Holzlöhner, C. R. Menyuk, W. L. Kath, V. S. Grigoryan, "A covariance matrix method for calculating accurate bit error rates in a DWDM CRZ system," submitted to Photon. Technol. Lett.


UNPUBLISHED MATERIAL

1) R. Holzlöhner, "Mesoscopic and Statistical Properties of Lipid Membranes", master's thesis, Department of Physics, Technical University of Berlin, Germany (1998)


PATENTS

1) C. R. Menyuk, R. Holzlöhner, V. S. Grigoryan, "Linearization Approach for Noise Estimation in WDM Systems", US Patent #60/225, provisional pending


last updated 22 June 2005.