Recent Publications

  • N. Ali and R. Kumar , “Mid-infrared silicon photonic switches using Ge2Sb2Te5 embedded in SOI waveguide”, Nanotechnology, Preprint (2019).

  • N. Ali and R. Kumar, “Design of a novel nanoscale high performance phase-change silicon photonic switch”, Photonics and Nanostructure-Fundamentals and Applications, 32, pp.81-85 (2018).

  • V. Srivastava, M. Tolani, Sunny and R. Kumar “Design and Simulations of Ge2Sb2Te5Vertical Photodetector for Silicon Photonic Platform” IEEE Sensors Journal, 18(2), pp. 540-546 (2018).

  • M. Tolani, Sunny, R.K. Singh, K. Shubham, and R. Kumar, “Two-Layer Optimized Railway Monitoring System using Wi-Fi and ZigBee Interfaced Wireless Sensor Network”, IEEE Sensors Journal, 17(7), pp.2241-48, 2017.

  • C. Sun, M. Wade, M. Georgas, S. Lin, L. Alloatti, B. Moss, R. Kumar, A. Atabaki, F. Pavanello, J. M. Shainline, J. S. Orcutt, R. Ram, M. Popović and V. Stojanović, “A 45nm SOI Monolithic Photonics platform with Bit-Statistics-Based Resonant Microring Thermal Tuning”, IEEE Journal of Solid State Circuits, 51(4), pp. 893-907(2016).

  • C. Sun, M. T. Wade, Y. Lee, J. S. Orcutt, L. Alloatti, M. S. Georgas, A. S. Waterman, J. M. Shainline, R. R Avizienis, S. Lin, B. R. Moss, R. Kumar, F. Pavanello, A. H. Atabaki, H. M. Cook, A. J. Ou, J. C. Leu, Y.-H. Chen, K. Asanović, R. J. Ram, M. A. Popović, and V. M. Stojanović, “Single-chip microprocessor that communicates directly using light”, Nature, 528(534), pp.534-538 (2015).


  • J. Ahuja, S. Singh, N. Ali and R. Kumar, “Sub-Nanojoule Electro-Optic Switching Using Ge2Sb2Te5 Integrated on Silicon Waveguide”, The International Photonics and Optoelectronics Meeting (POEM-2019), Wuhan, China, paper no. JW4A.76, p.70 (2019).

  • S. Singh and R. Kumar, “Silicon Photonic Waveguide Embedded Split Structure Ge2Sb2Te5 Cell for High Contrast Non-volatile Memory,” The International Photonics and Optoelectronics Meeting (POEM-2019), Wuhan, China, paper no. OW3D.4, p.65 (2019).

  • N. Ali and R. Kumar, “Electro-thermal Phase Change Investigation for Integrated Silicon Photonic Switch and Memory”, International Conference on Optics & Electro-Optics (ICOL-2019), Dehradun, Uttarakhand, India, paper no. OPD-PP-3, p.365 (2019).

  • N. Ali and R. Kumar, “Tunable Optical Filter Enabled by Phase Change Material Embedded in SOI Microring Resonator,’’ The 80th JSAP-OSA Autumn Meeting 2019, Paper no. 20a-E215-4, p. 04-066 (2019).

  • R. Kumar, N. Ali and S. Singh, “High Performance and CMOS-Compatible Photonic Switches Based on Phase Change Materials (Invited) ”, SPIE/COS Photonics Asia, pp. 11184-11 (2019).

  • N. Ali and R. Kumar “Thermal Analysis of non-volatile optical switch for 1.55 µm applications”, International Conference on Photonics, Metamaterials & Plasmonics (PMP-2019), paper no. PT-56, pp.111 (2019).

  • R. Kumar, N. Ali, and S. Singh, “Nonvolatile Photonic Switching Devices On CMOS Compatible Platform” (Invited), IEEE International Conference in Emerging Electronics, ICEE, Bangalore, 16-19 November 2018.

  • N. Ali, and R. Kumar, “Chip-scale Mid Infra-red Photonic Switch Based on Ge2Sb2Te5Incorporated in SOI Waveguide”, The International Conference on Fiber Optics and Photonics, Photonics- 2018, Manuscript ID 301, IIT Delhi New Delhi, India, 12-15 December, 2018.

  • N. Ali, and R. Kumar, “Design and simulations of photonic switch using hybrid Ge2Sb2Te5-silicon waveguides in mid-IR region”, International Conference on Optical Communications and Networks (ICOCN-2018), Manuscript ID ICOCN2018-2018-000081, Zhuhai, China; Co-published: Proceedings of SPIE, Vol. 11048, pp. 1140836-1 to 1140836-5.

  • R. Kumar, S.Singh, N.Ali, and A. Sharma, “Hybrid Silicon Photonic Devices for Switching and Memory Applications”(Invited), paper number 106, OSI-ISO (Optical Society of India-International Symposium on Optics) (2018).

  • N. Ali and R. Kumar, “Mid Infra-red Directional Coupler Optical Switch Based on Phase Change Material Embedded in Partially Etched SOI Waveguide”, Frontiers in Optics/Laser Science Conference (FIO/LS) , pp. paper JTu2A.102, (2018).

  • M. Rehan, G. Kumar, V. Rastogi, and R. Kumar, “Femtosecond Pulse Propagation through Large Mode Area Tapered Fiber at 1.06 μm Wavelength”, Frontiers in Optics/Laser Science Conference (FIO/LS), pp.paper JW3A.81 (2018).

  • S. Singh, N. Ali and R. Kumar, “Three Dimensional Optimization of Non-volatile Random Access Photonic Memory Cell”, (paper number 170619105943), proceedings of PIERS Singapore (2017.

  • U.S. Tripathi, R. Kumar and V. Rastogi, “Fabrication of Long Period Waveguide Gratings in Ion Exchanged BK7 Rib Waveguide by Excimer Laser Ablation Method”, (paper number 17061517140), proceedings of PIERS Singapore PIERS (2017).

  • C. Sun, M. Wade, Y. Lee, J. Orcutt, L. Alloatti, M. Georgas, A. Waterman, J. Shainline, R. Avizienis, S. Lin, B. Moss, R. Kumar, F. Pavanello, A. Atabaki, H. Cook, A. Ou, J. Leu, Y.-H. Chen, K. Asanovic, R. Ram, M. A. Popovic, V. Stojanovic, “Microprocessor Chip with Photonics I/O(Invited),”, The Optical Fiber Communication Conference (OFC) 2017, United States, pp. paper W1A.1, (2017).