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Dr. ir. Rajesh Kumar  (Doctoral Researcher)

This person worked in the group from 2008 till 2012.

Affiliation: University of Southampton
E-mail: [email protected]
Research Area: Microdisk laser based optical signal processing
PhD Thesis: Rajesh Kumar, Toepassingen in optische signaalverwerking van microschijven in InP op silicium, Applications of InP-on-Silicon Microdisks in All-Optical Signal Processing, 9/2012
RajeshKumar

Specific Research Topics

Publications (36)

    International Journals

  1. T. Van Vaerenbergh, M. Fiers, P. Mechet, T. Spuesens, R. Kumar, G. Morthier, B. Schrauwen, J. Dambre, P. Bienstman, Cascadable Excitability in microrings, Optics Express, 20(18), p.20292-20308 doi:10.1364/oe.20.020292 (2012)  Download this Publication (3.6MB).
  2. J. Lloret, R. Kumar, S. Sales, F. Ramos, G. Morthier, P. Mechet, T. Spuesens, D. Van Thourhout, N. Olivier, J.-M. Fedeli, J. Capmany, Ultra-compact electro-optic phase modulator based on III-V-on-silicon microdisk resonator, Optics Letters, 37(12), p.2379-2381 doi:10.1364/ol.37.002379 (2012)  Download this Publication (437KB).
  3. R. Kumar, T. Spuesens, P. Mechet, N. Olivier, J.- M. Fedeli, P. Regreny, G. Roelkens, D. Van Thourhout, G. Morthier, 10Gbit/s all-optical NRZ-OOK to RZ-OOK format conversion in an ultra-small III-V-on-silicon microdisk fabricated in a CMOS pilot line , Optics Express, 19(24), p.24647-24656 doi:10.1364/oe.19.024647 (2011)  Download this Publication (1.6MB).
  4. R. Kumar, T. Spuesens, P. Mechet, P. Kumar, O.Raz, N. Olivier, J.- M. Fedeli, G. Roelkens, R. Baets, D. Van Thourhout, G. Morthier, Ultra-fast and Bias-free All-Optical Wavelength Conversion Using III-V on Silicon Technology, Optics Letters, 36(13), p.2450-2452 doi:10.1364/ol.36.002450 (2011)  Download this Publication (570KB).
  5. H. D. Jung, R. Kumar, P. Regreny, H. J. S. Dorren, T. Koonen, O. Raz, Analog Modulation Characteristics of InP Membrane Microdisc Laser for In-building Networks, Electronics Letters, 47(2), p.121-123 doi:10.1049/el.2010.2456 (2011)  Download this Publication (417KB).
  6. D. Van Thourhout, T. Spuesens, S. Selvaraja, L. Liu, G. Roelkens, R. Kumar, G. Morthier, P. R. -Romeo, , F. Mandorlo, O. Raz, C. Kopp, L. Grenouillet, Nanophotonic Devices for Optical Interconnect, IEEE JSTQE (invited), 16(5), p.1363-1375 doi:10.1109/JSTQE.2010.2040711 (2010)  Download this Publication (1.7MB).
  7. R. Kumar, L. Liu, G. Roelkens, E.-J.Geluk, T. de Vries, F. Karouta, P. Regreny, D. Van Thourhout, R. Baets, G. Morthier, 10GHz All-Optical Gate Based on a III-V/SOI Microdisk , Photonics Technology Letters, 22(13), p.981-983 doi:10.1109/lpt.2010.2048895 (2010)  Download this Publication (256KB).
  8. L. Liu, R. Kumar, K. Huybrechts, T. Spuesens, G. Roelkens, E.-J. Geluk, T. de Vries, P. Regreny, D. Van Thourhout, R. Baets, G. Morthier, An ultra-small, low-power, all-optical flip-flop memory on a silicon chip, Nature Photonics, 4(3), p.182-187 doi:10.1038/nphoton.2009.268 (2010).
      International Conferences

    1. T. Van Vaerenbergh, M. Fiers, P. Mechet, T. Spuesens, R. Kumar, G. Morthier, K.T Vandoorne, B. Schneider, B. Schrauwen, J. Dambre, P. Bienstman, Characterization of cascadable excitability in a silicon-on-insulator microring, Proceedings of the 2012 Annual Symposium of the IEEE Photonics Society Belenux Chapter, Belgium, p.119-122 (2012)  Download this Publication (471KB).
    2. R. Kumar, G. Morthier, Non-reciprocal response in heterogeneously integrated microdisks, Proceedings of the 2012 Annual Symposium of the IEEE Photonics Society Belenux Chapter, Belgium, p.131-134 (2012)  Download this Publication (504KB).
    3. T. Van Vaerenbergh, M. Fiers, P. Mechet, T. Spuesens, R. Kumar, G. Morthier, K.T Vandoorne, B. Schneider, B. Schrauwen, J. Dambre, P. Bienstman, Self-pulsation and excitability mechanism in silicon-on-insulator microrings , 2012 Asia Communications and Photonics Conference (ACP), China, p.ATh4B.5 doi:10.1364/ACP.2012.ATh4B.5 (2012).
    4. R. Kumar, T. Spuesens, P. Mechet, N. Olivier, J.- M. Fedeli, P. Regreny, G. Roelkens, D. Van Thourhout, G. Morthier, 10Gbit/s Bias-free and Error-free All-optical NRZ-OOK to RZ-OOK Format Conversion Using a III-V-on-silicon Microdisk Resonator , The Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC) 2012, United States, p. JW2A.77 doi:10.1364/nfoec.2012.jw2a.77 (2012)  Download this Publication (376KB).
    5. G. Roelkens, S. Keyvaninia, S. Stankovic, M. Tassaert, N. Hattasan, A. Gassenq, P. De Heyn, Y. De Koninck, P. Mechet, R. Kumar, M. Muneeb, D. Vermeulen, G. Morthier, R. Baets, D. Van Thourhout, III-V-on-silicon membrane photonics for near-infrared and mid-infrared applications, 16th European Conference on Integrated Optics (ECIO 2012) (invited), Spain, (2012)  Download this Publication (493KB).
    6. R. Kumar, T. Spuesens, P. Mechet, J.– M. Fedeli, N. Olivier, P. Regreny, G. Roelkens, D. Van Thourhout, G. Morthier, All-optical de-multiplexing of 10Gbps data using III-V/SOI microdisk resonators, Annual Symposium of the IEEE Photononics Benelux Chapter, Belgium, (2011)  Download this Publication (336KB).
    7. G. Morthier, P. Mechet, R. Kumar, G. Roelkens, T. Spuesens, T. De Vries, E. J. Geluk, P. Regreny, R. Baets, D. Van Thourhout, Progress in heterogeneously integrated silicon-InP laser diodes for on-chip all-optical networks and signal processing, Frontiers in Optics 2011, OSA (invited), United States, p.paper FWBB4 doi:10.1364/fio.2011.fwbb4 (2011)  Download this Publication (201KB).
    8. R. Kumar, T. Spuesens, P. Mechet, J.– M. Fedeli, N. Olivier, P. Regreny, G. Roelkens, D. Van Thourhout, G. Morthier, Proof-of-concept Demonstration of an All-Optical De-multiplexer Using III-V/SOI Microdisk Resonator Fabricated in a CMOS Pilot Line, IPC2011, p.127-128 doi:10.1109/pho.2011.6110458 (2011)  Download this Publication (234KB).
    9. G. Roelkens, S. Stankovic, S. Keyvaninia, P. Mechet, R. Kumar, T. Spuesens, G. Morthier, R. Baets, D. Van Thourhout, M. Lamponi, G. Duan, Y. Halioua, F. Raineri, R. Raj, Laser sources on a heterogeneous III-V/silicon platform, IEEE Photonics 2011 (IPC 2011) (invited), United States, p.395-396 doi:10.1109/pho.2011.6110553 (2011)  Download this Publication (523KB).
    10. R. Kumar, T. Spuesens, P. Mechet, P. Regreny, J.- M. Fedeli, N. Olivier, G. Roelkens, D. Van Thourhout, G. Morthier, All-optical de-multiplexing using III-V/SOI microdisk resonators, European Semiconductor Laser Workshop (ESLW), Switzerland, (2011)  Download this Publication (217KB).
    11. R. Kumar, T. Spuesens, P. Mechet, P. Regreny, N. Olivier, J.-M. Fedeli, G. Roelkens, D. Van Thourhout, G. Morthier, 10Gbps bias-free all-optical wavelength conversion using InP-microdisk resonators heterogeneously integrated onto SOI , ECOC, Switzerland, p.paper We.9.LeSaleve.3 doi:10.1364/ecoc.2011.we.9.lesaleve.3 (2011)  Download this Publication (475KB).
    12. O. Raz, H.J.S.Dorren, R. Kumar, G. Morthier, P. Regreny, P. Rojo-Romeo, 50 fJ-per-bit, High Speed, Directly Modulated Light Sources for On-chip Optical Data Communications, The Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC), United States, doi:10.1364/ofc.2011.omm5 (2011)  Download this Publication (965KB).
    13. P. Mechet, L. Liu, R. Kumar, K. Huybrechts, T. Spuesens, G. Roelkens, E.-J. Geluk , T. De Vries , P. Regreny , D. Van Thourhout, R. Baets, G. Morthier, Heterogeneously Integrated Microdisk Lasers for Optical Interconnects and Optical Logic, SPIE Photonics West 2011 (invited), 7913, United States, p.791319 doi:10.1117/12.885749 (2011)  Download this Publication (896KB).
    14. R. Kumar, P. Kumar, G. Roelkens, L. Liu, P. Regreny, T. de Vries, D. Van Thourhout, R. Baets, G. Morthier, Performance Analysis of III-V/SOI Microdisk Based All-Optical Gate for On-chip Interconnects, Annual Symposium of the IEEE Photononics Benelux Chapter, Netherlands, p.129-131 (2010)  Download this Publication (186KB).
    15. O. Raz, H. D. Jung, R. Kumar, P. Regreny, T. Koonen, H. J. S. Dorren, Integrated InP membrane light sources for analog CMOS photonic transmitters, Annual Symposium of the IEEE Photononics Benelux Chapter, Netherlands, p.177-180 (2010)  Download this Publication (241KB).
    16. K. Huybrechts, L. Liu, R. Kumar, T. Spuesens, G. Roelkens, E.J. Geluk, T. De Vries, P. Regreny, D. Van Thourhout, R. Baets, G. Morthier, All-Optical Flip-Flops using Electrically Pumped Microdisk Lasers Integrated on Silicon , IEEE Photonics Society Annual Meeting (invited), United States, doi:10.1109/photonics.2010.5698750 (2010)  Download this Publication (377KB).
    17. O. Raz, L. Liu, R. Kumar, G. Morthier, P. Regreny, H. J. S. Dorren, A Single InP Membrane Disc Cavity for Both Transmission and Detection of 10Gb/s Signals in On Chip Interconnects, ECOC , doi:10.1109/ecoc.2010.5621362 (2010)  Download this Publication (1.6MB).
    18. G. Roelkens, D. Vermeulen, L. Liu, T. Spuesens, R. Kumar, P. Mechet, K. Huybrechts, S. Keyvaninia, S. Stankovic, M. Tassaert, P. De Heyn, K. Komorowska, S. Selvaraja, D. Van Thourhout, G. Morthier, R. Baets, R. Halir, III-V/silicon photonic integrated circuits for FTTH and optical interconnect, IB2COM (invited), Spain, (2010)  Download this Publication (891KB).
    19. J. Hofrichter, O. Raz, F. Horst, N. Chrysos, C. Minkenberg, T. de Vries, H. J. S. Dorren, R. Kumar, L. Liu, B.-J. Offrein, A Fast And Comprehensive Microdisc Laser Model Applied To All-optical Wavelength Conversion, Integrated Photonics Research, Silicon and Nano Photonics (IPR), Photonics in Switching (PS), United States, p.PTuA2.pfd doi:10.1364/ps.2010.ptua2 (2010)  Download this Publication (284KB).
    20. G. Morthier, L. Liu, R. Kumar, P. Mechet, K. Huybrechts, G. Roelkens, T. Spuesens, T. de Vries, E.J. Geluk, P. Regreny, R. Baets, D. Van Thourhout, Heterogeneous InP on SOI integration for the realization of all-optical logic devices, Integrated Photonics Research, Silicon and Nano Photonics (IPR), Photonics in Switching (PS) (invited), United States, p.IWF2.pdf (3 pages) doi:10.1364/iprsn.2010.iwf2 (2010)  Download this Publication (105KB).
    21. J. Hofrichter, F. Horst, N. Chrysos, C. Minkenberg, R. Kumar, L. Liu, G. Morthier, T. de Vries, B.J. Offrein, Digital all-optical signal processing using microdisk lasers, Integrated Photonics Research, Silicon and Nano Photonics (IPR), Photonics in Switching (PS), United States, p.PTuA3.pdf (3 pages) doi:10.1364/ps.2010.ptua3 (2010)  Download this Publication (204KB).
    22. G. Morthier, R. Kumar, F. Raineri, R. Raj, J. Hofrichter, N. Chrysos, B.J. Offrein, R. Zhang, J. van der Tol, O. Raz, H. Dorren, Overview of the EU FP7-project HISTORIC, Proceedings of SPIE - Silicon Photonics and Photonic Integrated Circuits II (invited), 7719, Belgium, p.paper 771908 (13 pages) doi:10.1117/12.855850 (2010)  Download this Publication (1012KB).
    23. K. Huybrechts, L. Liu, R. Kumar, T. Spuesens, G. Roelkens, E.-J. Geluk, T. de Vries, M. Smit, P. Regreny, P. Rojo-Romeo, D. Van Thourhout, R. Baets, G. Morthier, Digital photonics using InP microdisk lasers heterogeneously integrated on Silicon-on-Insulator, European Conference on Integrated Optics (ECIO) (invited), United Kingdom, p.WeF1 (2010)  Download this Publication (60KB).
    24. R. Kumar, K. Huybrechts, L. Liu, T. Spuesens, G. Roelkens, E.-J. Geluk, T. de Vries, P. Regreny, D. Van Thourhout, R. Baets, G. Morthier, An ultra-small, low-power all-optical flip-flop memory on a silicon chip, The Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC) 2010, United States, p.OTuN7 doi:10.1364/ofc.2010.otun7 (2010)  Download this Publication (394KB).
    25. R. Kumar, L. Liu, G. Roelkens, E.-J. Geluk , T. de Vries, P. Regreny, D. Van Thourhout, R. Baets, G. Morthier, 10GHz all-optical gate on a silicon chip, The Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC) 2010, United States, p.JWA44 doi:10.1364/nfoec.2010.jwa44 (2010)  Download this Publication (287KB).
    26. O. Raz, L. Liu, R. Kumar, G. Morthier, D. Van Thourhout, P. Regreny, P. Rojo-Romeo, T. de Vries, H.J.S. Dorren, Compact, low power and low threshold electrically pumped micro disc lasers for 20Gb/s non return to zero all optical wavelength conversion, The Optical Fiber Communication Conference and Exposition (OFC) and The National Fiber Optic Engineers Conference (NFOEC) 2010, United States, p.OMQ5 doi:10.1364/ofc.2010.omq5 (2010)  Download this Publication (1.5MB).
    27. R. Kumar, L. Liu, G. Roelkens, G. Morthier, R. Baets, Simple and accurate measurements to characterize microdisk lasers for all-optical flip-flop operation, Proceedings of the 2009 Annual Symposium of the IEEE Photononics Benelux Chapter, Belgium, p.81-84 (2009)  Download this Publication (324KB).
        National Conferences

      1. R. Kumar, G. Morthier, Photonic Integrated Circuits Using III-V/SOI Microresonators, UGent-FirW PhD Symposium , (2010)  Download this Publication (153KB).
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