Area of Interest: Optical Fiber Technology, Multicore Fiber, Analog & Digital Electronics, Basic electronics & Semiconductor devices, Communication system, PCB Fabrication, Free space optics.
E-Mail:
Gola Ka Mandir, Gwalior (M.P.) - 474005, INDIA
Ph.: +91-751-2409300, E-mail: vicechancellor@mitsgwalior.in, Website: www.mitsgwalior.in
PhD (ECE) from NIT Patna in 2020.
M.Tech (Communication Systems) from NIT Patna in 2015.
B.E. (ECE) from RGPV Bhopal in 2011.
1. Excellence in Paper Presentation (Best Paper) Award at Photonics-2018 Conference, IIT Delhi, India.
2. MHRD Scholarship receiving during PhD programs.
3. GATE qualified 5-times in:- “GATE-2013, GATE-2014, GATE-2016, GATE-2019, and GATE-2020.
4. Reviewer of SCI Journals and Conferences.
Publications (SCI/ESCI/SCIE):
(i). D. Kumar and R. Ranjan, “Optimal Design for Crosstalk Analysis in 12-Core 5-LP Mode Homogeneous Multicore Fiber for Different Lattice Structure”, Optical Fiber Technology, Elsevier, vol. 41, pp. 95-103, March 2018 (IF- 2.7). https://doi.org/10.1016/j.yofte.2018.01.002
(ii). D. Kumar and R. Ranjan, “Design and Crosstalk Optimization in Single-Mode High-Core Count Multicore Fiber under Limited Cladding Diameter”, Optical Engineering, SPIE, vol. 58(5), pp. 056109 (May 2019) (IF- 1.3). https://doi.org/10.1117/1.OE.58.5.056109
(iii). D. Kumar and R. Ranjan, “Optimal Design of a Single-mode Trench-assisted Homogeneous Multicore Fiber with a Minimum Crosstalk Level”, Quantum Electronics, IOP, vol. 49(11), pp. 1045-1053 (Nov 2019) (IF- 1.2). https://iopscience.iop.org/article/10.1070/QEL16962
(iv). D. Kumar and R. Ranjan, “Appropriate Method of Core Selection and Crosstalk Optimization in Single-mode Homogeneous Multicore Fiber”, Optoelectronics Letters, Springer, vol. 16(2), 126-130 (April 2020) (IF- 0.8). https://doi.org/10.1007/s11801-020-9048-7
(v). Dablu Kumar and Rakesh Ranjan, “Design analysis for ultra-low crosstalk in high core count heterogeneous multicore fiber”, Optoelectronics Letters. Springer, Nature, vol. 17(10), pp. 616-621, October - 2021 (IF- 0.8). https://doi.org/10.1007/s11801-021-1013-6
(vi). Veer Chandra, Dablu Kumar, Rakesh Ranjan, “Reduction in Crosstalk Using Uniform Germanium Strips for Dense Integration of Photonic Waveguides”, Silicon, Springer, vol. 14, 2022, pp. 7603-7612, (IF: 3.4) https://doi.org/10.1007/s12633-021-01500-x
(vii). Dablu Kumar and Rakesh Ranjan, “Crosstalk Characterization in Homogeneous Multicore Fiber using Discrete Changes Model under Bi-directional Propagation”, Journal of Optical Communications (De Gruyter). vol. 44, no. s1, 2023, pp. s1457-s1467, (IF- 1.24). https://doi.org/10.1515/joc-2020-0209
1. D. Kumar and R. Ranjan, “Crosstalk Analysis in Homogeneous 12-core Multicore Fiber with Different Core Layouts for LP01 and LP02 Modes”, IEEE Region Ten Conference (TENCON 2017), 5-8 November, Penang Malaysia, pp. 2405-2408, 2017. (Published). DOI: 10.1109/TENCON.2017.8228264
2. D. Kumar and R. Ranjan, “Estimation of Crosstalk in Homogeneous Multicore Fiber for High Core Count under Limited Cladding Diameter”, IEEE, Conference on Information and Communication Technology (CICT-2017), 3-5 November, IIITM Gwalior. (Published). DOI: 10.1109/INFOCOMTECH.2017.8340626
3. D. Kumar and R. Ranjan, “Crosstalk Suppression using Trench-assisted Technique in 9-core Homogeneous Multi Core Fiber”, IEEE 14th Indian Council International Conference 2017 (INDICON 2017), 15-18 December, IIT-Roorkee. (Published). DOI: 10.1109/INDICON.2017.8487586
4. D. Kumar and R. Ranjan, “Analysis of Crosstalk Performance and its Reduction Amount in Single mode Homogeneous Trench-assisted Multicore Fiber”, IEEE, Conference on Information and Communication Technology (CICT-2018), India. (Published). DOI: 10.1109/INFOCOMTECH.2018.8722383.
5. R. Ranjan and D. Kumar, “Design strategies for two-core uncoupled multicore fiber for crosstalk analysis”, IEEE conference CICT-2018, IIITDM Jabalpur, India. (Published). DOI: 10.1109/INFOCOMTECH.2018.8722422
6. Dablu Kumar, Divakar Kumar, and Rakesh Ranjan, “Analysis of Coupling Effect in Coupled SOI Rib Waveguide for Different Polarization Mode”, IEEE conference CICT-2018, India. (Published).
DOI: 10.1109/INFOCOMTECH.2018.8722395.
7. R. Ranjan and D. Kumar, “Relative refractive index difference dependent crosstalk analysis in two core uncoupled homogeneous multicore fiber”, Photonics-2018, IIT Delhi, India. (Published).
8. D. Kumar and R. Ranjan, “Crosstalk optimization in single-mode multicore fiber using propagation direction interleaving technique”, Photonics-2018, IIT Delhi, India. (Published).
1. P. Ranjan, D. Kumar and R. Ranjan, “Characterization of Crosstalk under Bending and Twisting condition in Homogeneous Multicore Fiber”, Optical and Wireless Technologies 2019, MNIT Jaipur, India. Lecture Notes in Electrical Engineering, vol 648, pp. 551-558. Springer, Singapore.
2. D. Kumar and R. Ranjan, “Design and Crosstalk analysis in Homogeneous Trench-assisted Multicore Fiber under Single Mode Condition”, Optical and Wireless Technologies 2019, MNIT Jaipur, India. Lecture Notes in Electrical Engineering, vol 648, pp. 559-568. Springer, Singapore.
Short Term Course:
A TEQIP-II sponsored Short-Term Course on ANALOG INTEGRATED CIRCUITS from JUNE 15th -22nd 2015 at NIT Patna.
A TEQIP-IIsponsored Short-Term Course on MICROWAVES AND ANTENNAS from 29th JUNE -03rd JULY 2015 at NIT Patna.
INUP familiarization workshop on Nanofabrication Technologies in IIT Patna on 8th – 9th October 2015, organized by IISc Bangalore.
A TEQIP sponsored course of 10 days on VLSI & embedded circuit design by TI in NIT Patna.
A TEQIP sponsored course of 5 days on Fiber optics communication and Photonics at NIT Patna.
Technical Skills:
Software working skills on MAT-LAB, PCB LAYOUT, MULTISIM.
Software learned “CST STUDIO- Antenna design”
FemSIM Software, COMSOL Multi-physics software for OFC design.