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Institute of Photonics and Quantum Electronics
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Building 30.10
Engesserstr. 5
76131 Karlsruhe
Germany

Phone: +49 (0)721 608-42481
Fax:     +49 (0)721 608-42786
E-Mail: officeVza3∂ipq kit edu

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Sandeep_Ummethala

M.Sc. Sandeep Ummethala

Room: B30.10 R1.21(IPQ, Campus Süd), B307 R336 (IMT, Campus Nord)
Phone: +49 721 608-42496 (IPQ), -26830 (IMT)
sandeep ummethalaIus4∂kit edu




Publications


List publications according to year

All | 2019 | 2018 | 2016 | 2015 | 2014

List publications according to type

All | Journal Articles | Conference Contributions

Journal Articles (8)

  • Harter, T.; Ummethala, S.; Blaicher, M.; Muehlbrandt, S.; Wolf, S.; Weber, M.; Adib, M. M. H.; Kemal, J. N.; Merboldt, M.; Boes, F.; Nellen, S.; Tessmann, A.; Walther, M.; Globisch, B.; Zwick, T.; Freude, W.; Randel, S.; Koos, C.
    Wireless THz link with optoelectronic transmitter and receiver
    Optica 6, 1063--1070 (2019) [DOI]

  • Ummethala, S.; Harter, T.; Koehnle, K.; Li, Z.; Muehlbrandt, S.; Kutuvantavida, Y.; Kemal, J. N.; Marin-Palomo, P.; Schaefer, J.; Tessmann, A.; Garlapati, S. K.; Bacher, A.; Hahn, L.; Walther, M.; Zwick, T.; Randel, S.; Freude, W.; Koos, C.
    THz-to-optical conversion in wireless communications using an ultra-broadband plasmonic modulator
    Nature Photonics 13, 519--524 (2019) [DOI]

  • Harter, T.; Fuellner, C.; Kemal, J. N.; Ummethala, S.; Steinmann, J. L.; Brosi, J.-M.; Hesler, J. L.; Bruendermann, E.; Mueller, M.; Freude, W.; Randel, S.; Koos, C.
    Generalized Kramers-Kronig Receiver for Coherent THz Communications
    ArXiv (2019) more

  • Harter, T.; Muehlbrandt, S.; Ummethala, S.; Schmid, A.; Nellen, S.; Hahn, L.; Freude, W.; Koos, C.
    Silicon–plasmonic integrated circuits for terahertz signal generation and coherent detection
    Nature Photonics 12, 625--633 (2018) [DOI]

  • Koos, C.; Leuthold, J.; Freude, W.; Kohl, M.; Dalton, L. R.; Bogaerts, W.; Giesecke, A. L.; Lauermann, M.; Melikyan, A.; Koeber, S.; Wolf, S.; Weimann, C.; Muehlbrandt, S.; Koehnle, K.; Pfeifle, J.; Hartmann, W.; Kutuvantavida, Y.; Ummethala, S.; Palmer, R.; Korn, D.; Alloatti, L.; Schindler, P. C.; Elder, D. L.; Wahlbrink, T.; Bolten, J.
    Silicon-Organic Hybrid (SOH) and Plasmonic-Organic Hybrid (POH) Integration
    J. Lightwave Technol. 34, 01-13 (2016) [DOI] more, (invited)

  • Rath, P.; Ummethala, S.; Nebel, C.; Pernice, W. H. P.
    Diamond as a material for monolithically integrated optical and optomechanical devices
    physica status solidi (a) 212, 2385--2399 (2015) [DOI]

  • Rath, P.; Ummethala, S.; Diewald, S.; Lewes-Malandrakis, G.; Brink, D.; Heidrich, N.; Nebel, C.; Pernice, W. H. P.
    Diamond electro-optomechanical resonators integrated in nanophotonic circuits
    Applied Physics Letters 105 (2014) [DOI]

  • Ummethala, S.; Rath, P.; Lewes-Malandrakis, G.; Brink, D.; Nebel, C.; Pernice, W. H. P.
    High-Q optomechanical circuits made from polished nanocrystalline diamond thin films
    Diamond and Related Materials 44, 49 - 53 (2014) [DOI]


Conference Contributions (14)

  • Harter, T.; Fuellner, C.; Kemal, J. N.; Ummethala, S.; Steinmann, J. L.; Brosi, J.-M.; Hesler, J. L.; Bruendermann, E.; Freude, W.; Randel, S.; Koos, C.
    Generalized Kramers-Kronig Receiver for 16QAM Wireless THz Transmission at 110 Gbit/s
    45th European Conference on Optical Communication (ECOC'19), Dublin, Ireland, September 22-26 , paper Th.2.C.4 (2019)

  • Freude, W.; Ummethala, S.; Harter, T.; Koehnle, K.; Li, Z.; Muehlbrandt, S.; Kutuvantavida, Y.; Kemal, J. N.; Marin-Palomo, P.; Schaefer, J.; Tessmann, A.; Kumar Garlapati, S.; Bacher, A.; Hahn, L.; Walther, M.; Zwick, T.; Randel, S.; Koos, C.
    Wireless THz-to-optical conversion with an electro-optic plasmonic modulator
    Light: Science & Applications, Light Conference (Light Conference'19), Changchun, China, July 16-18 (2019) (invited)

  • Freude, W.; Harter, T.; Muehlbrandt, S.; Ummethala, S.; Nellen, S.; Hahn, L.; Randel, S.; Koos, C.
    Silicon photonics for coherent terahertz generation and detection
    21th Intern. Conf. on Transparent Optical Networks (ICTON'19), Angers, France, July 9-13 (2019) [DOI] (invited)

  • Freude, W.; Harter, T.; Ummethala, S.; Muehlbrandt, S.; Blaicher, M.; Wolf, S.; Weber, M.; Boes, F.; Massler, H.; Tessmann, A.; Kutuvantavida, Y.; Kemal, J. N.; Nellen, S.; Hahn, L.; Globisch, B.; Walther, M.; Zwick, T.; Randel, S.; Koos, C.
    Wireless terahertz communications
    Conf. on Lasers and Electro-Optics (CLEO/Europe-EQEC 2019), Munich, Germany, June 23-27 (2019)

  • Ummethala, S.; Kemal, J. N.; Lauermann, M.; Alam, A. S.; Zwickel, H.; Harter, T.; Kutuvantavida, Y.; Hahn, L.; Nandam, S. H.; Elder, D. L.; Dalton, L. R.; Freude, W.; Randel, S.; Koos, C.
    Capacitively Coupled Silicon-Organic Hybrid Modulator for 200 Gbit/s PAM-4 Signaling
    Conf. on Lasers and Electro-Optics (CLEO'19), San Jose (CA), USA, May 5–10 , paper JTh5B.2 Optical Society of America (2019) [DOI] (postdeadline)

  • Freude, W.; Harter, T.; Ummethala, S.; Muehlbrandt, S.; Blaicher, M.; Wolf, S.; Weber, M.; Boes, F.; Massler, H.; Tessmann, A.; Kutuvantavida, Y.; Kemal, J. N.; Nellen, S.; Hahn, L.; Goebel, T.; Walther, M.; Zwick, T.; Randel, S.; Koos, C.
    Terahertz communications meets photonics
    14th Intern. Conf. on Fiber Optics & Photonics (Photonics'18), Indian Institute of Technology Delhi (IIT Delhi), Delhi, India, December 12–15 (2018) (invited)

  • Ummethala, S.; Harter, T.; Koehnle, K.; Li, Z.; Muehlbrandt, S.; Kutuvantavida, Y.; Kemal, J. N.; Schaefer, J.; Massler, H.; Tessmann, A.; Kumar Garlapati, S.; Bacher, A.; Hahn, L.; Walther, M.; Zwick, T.; Randel, S.; Freude, W.; Koos, C.
    Wireless Transmission at 0.3 THz Using Direct THz-to-Optical Conversion at the Receiver
    44th European Conference on Optical Communication (ECOC'18), Rome, Italy, September 23-27 , paper We4H.3 (2018) [DOI] (invited)

  • Harter, T.; Fuellner, C.; Kemal, J. N.; Ummethala, S.; Brosi, J.-M.; Bruendermann, E.; Freude, W.; Randel, S.; Koos, C.
    110-m THz Wireless Transmission at 100 Gbit/s Using a Kramers-Kronig Schottky Barrier Diode Receiver
    44th European Conference on Optical Communication (ECOC'18), Rome, Italy, September 23-27 , paper Th3F.7 (2018) [DOI] (postdeadline)

  • Harter, T.; Ummethala, S.; Muehlbrandt, S.; Blaicher, M.; Koehnle, K.; Adib, M. M. H.; Weber, M.; Wolf, S.; Kutuvantavida, Y.; Kemal, J. N.; Nellen, S.; Hahn, L.; Tessmann, A.; Walther, M.; Zwick, T.; Randel, S.; Freude, W.; Koos, C.
    Wireless terahertz communications using optoelectronic techniques
    Progress in Electromagnetics Research Symposium 2018 (PIERS 2018), Toyama, Japan, August 1-4 (2018) (invited)

  • Koos, C.; Randel, S.; Freude, W.; Dalton, L. R.; Wolf, S.; Kieninger, C.; Kutuvantavida, Y.; Lauermann, M.; Elder, D. L.; Muehlbrandt, S.; Zwickel, H.; Melikyan, A.; Harter, T.; Ummethala, S.; Billah, M. R.; Blaicher, M.; Dietrich, P.-I.; Hoose, T.
    Hybrid Photonic Integration and Plasmonic Devices: New Perspectives for High-Speed Communications and Ultra-Fast Signal Processing
    Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2018), Hong Kong, July 29 – August 3 (2018) [DOI] (invited)

  • Freude, W.; Harter, T.; Ummethala, S.; Muehlbrandt, S.; Blaicher, M.; Wolf, S.; Weber, M.; Boes, F.; Massler, H.; Tessmann, A.; Kutuvantavida, Y.; Kemal, J. N.; Nellen, S.; Hahn, L.; Goebel, T.; Walther, M.; Zwick, T.; Randel, S.; Koos, C.
    Wireless THz communications using optoelectronic techniques
    Light: Science & Applications, Light Conference (Light Conference'18), Changchun, China, July 16-18 (2018) (invited)

  • Ummethala, S.; Harter, T.; Koehnle, K.; Muehlbrandt, S.; Kutuvantavida, Y.; Kemal, J. N.; Schaefer, J.; Massler, H.; Tessmann, A.; Kumar Garlapati, S.; Bacher, A.; Hahn, L.; Walther, M.; Zwick, T.; Randel, S.; Freude, W.; Koos, C.
    Terahertz-to-Optical Conversion Using a Plasmonic Modulator
    Conf. on Lasers and Electro-Optics (CLEO'18), San Jose (CA), USA, May 13–18 , paper STu3D.4 (2018) [DOI]

  • Harter, T.; Muehlbrandt, S.; Ummethala, S.; Schmid, A.; Bacher, A.; Hahn, L.; Kohl, M.; Freude, W.; Koos, C.
    Silicon-Plasmonic Photomixer for Generation and Homodyne Reception of Continuous-Wave THz Radiation
    Conf. on Lasers and Electro-Optics (CLEO'16), San Jose (CA), USA, June 5 – 10 , paper SM4E.5. (2016) [DOI]

  • Rath, P.; Ummethala, S.; Diewald, S.; Lewes-Malandrakis, G.; Brink, D.; Heidrich, N.; Nebel, C.; Pernice, W. H. P.
    Diamond Electro-optomechanical Devices with Resonance Frequencies above 100 MHz
    41th European Conf. Opt. Commun. (ECOC'15), Valencia, Spain, Sept. 27 – Oct. 1 , STh3I.1 Optical Society of America (2015) [DOI]