Tanmoy Datta

@vmharipal.ac.in

Assistant Professor
Vivekananda Mahavidyalaya, Haripal



              

https://researchid.co/tanmoydatta2011

RESEARCH, TEACHING, or OTHER INTERESTS

Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics

21

Scopus Publications

184

Scholar Citations

7

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • ANN-based estimation of dispersion characteristics of slotted photonic crystal waveguides
    Akash Kumar Pradhan, Chandra Prakash, Tanmoy Datta, Mrinal Sen, and Haraprasad Mondal
    Springer Science and Business Media LLC

  • All-Optical Demultiplexer: A Review on Recent Research and Developments
    Haraprasad Mondal, Kamanashis Goswami, Tanmoy Datta, Rajesh Bose, Sandip Roy, and Anup Sharma
    Springer Science and Business Media LLC

  • Raman based on-chip photonic quantizers for ADCs
    Akash Kumar Pradhan, Mrinal Sen, and Tanmoy Datta
    Optica Publishing Group
    In this work, a model for an on-chip all-photonic analog to digital converter is proposed. Here, the underlying quantization technique is based on slicing the supercontinuum generated inside the highly nonlinear nanocrystal embedded slotted photonic crystal waveguide at specifically chosen wavelengths. It is shown that although both the broadening and splitting of the spectrum can be used for four level quantization, only broadening can be used for designing eight (or more) level quantization. The highly nonlinear device system makes the eight level quantization scheme incremental within a footprint of 50×20µm2, which can convert 0–11 mW analog optical power to respective quantization levels. Although both Kerr and stimulated Raman scattering (SRS) contribute to the generation of the supercontinuum, the giant SRS gain of the silicon nanocrystal essentially outweighs that of the Kerr, with, consequently, unprecedented miniaturization in both operating power and footprint.

  • MEMS based bimorph optical temperature sensor
    Kaushik Shukla, Tanmoy Datta, and Mrinal Sen
    AIP Publishing
    The paper proposes a novel microcantilever based optical temperature sensor/calorimeter for use in applications requiring high-resolution measurements. The cantilever beam is made of bi-material that deflects in response to the change in temperature because of the difference that exists between the thermal expansion coefficients of the respective two materials. The deflection of the cantilever is then detected by an equivalent change in the optical intensity received by an optical setup. Analyses of the sensitivity have been carried out for different materials for the bimorph. The proposed sensor demonstrates a resolution of 110 nK as a temperature sensor and 0.5 pW as a calorimeter at 5% error for Al/SiO2 bimorph. Such a high sensitivity in the said context has never been reported earlier.

  • Raman mediated solitonic pulse compression
    Akash Kumar Pradhan, Mrinal Sen, and Tanmoy Datta
    Optica Publishing Group
    A comprehensive analysis of Raman mediated solitonic compression of pulses inside a silicon nanocrystal embedded slotted photonic crystal waveguide (SPCW) is presented. The ultrahigh Raman gain coefficient of the silicon nanocrystal material, being fortified further by the intense optical confinement inside the SPCW, essentially outweighs the contribution of the Kerr in the self-phase modulation phenomenon that is responsible for the solitonic propagation of a pulse. This work particularly emphasizes the contribution of Raman nonlinearity in the soliton dynamics, which however has been neglected conventionally, leading to an unprecedented miniaturization in both the operating power and footprint. Spatiotemporal evolution of pulses inside the SPCW has been calculated using the nonlinear Schrödinger equation considering the slow-light regime. A compression factor as high as 44.3 is obtained using a 30 µm long SPCW with a peak input power of 8 mW at 1550 nm.

  • LED pumped Raman laser: Towards the design of an on-chip all-silicon laser
    Akash Kumar Pradhan, Mrinal Sen, and Tanmoy Datta
    Elsevier BV

  • A review on photonic crystal based all-optical logic decoder: linear and nonlinear perspectives
    Anup Sharma, Kamanashis Goswami, Haraprasad Mondal, Tanmoy Datta, and Mrinal Sen
    Springer Science and Business Media LLC

  • Micro Cantilever-Based Optical Gravimeter
    Yash Raj, Kaushik Shukla, Tanmoy Datta, and Mrinal Sen
    Institute of Electrical and Electronics Engineers (IEEE)
    Geophysical phenomena like volcanic eruptions, tectonic plate movements, and earthquakes directly influence the gravitational pull in the region of occurrence. Measurement of anomalies in the gravitational pull has been a useful technique in analyzing such activities quantitatively. Gravitational variations also carry indications of the presence of the earth’s minerals and other such useful resources. In this paper, a novel on-chip micro-cantilever-based optical gravimeter has been proposed for the precise measurement of gravitational changes. Simulations comprising both three-dimensional full-vector finite element and finite difference time domain methods have been carried out for analyses, demonstrating an extensive reading range of 6000 mGal with a resolution of <inline-formula> <tex-math notation="LaTeX">$1.17~\\mu $ </tex-math></inline-formula>Gal and sensitivity of <inline-formula> <tex-math notation="LaTeX">$1~\\mu $ </tex-math></inline-formula>Gal/<inline-formula> <tex-math notation="LaTeX">$\\sqrt {Hz}$ </tex-math></inline-formula> at 1 Hz.

  • All-optical logic inverter for large-scale integration in silicon photonic circuits
    Tanmoy Datta and Mrinal Sen
    Institution of Engineering and Technology (IET)
    A new device architecture of an all-optical logic inverter (AOLI) has been proposed in this study. The AOLI functions based on stimulated Raman scattering (SRS) in silicon nanocrystal embedded slotted photonic crystal waveguide (SPCW). The operating power and footprint size of the proposed device have significantly been scaled down to ∼1.5 mW and , respectively, by combining the benefits of giant SRS gain of silicon nanocrystal and ultra-high spatio-temporal confinement of the SPCW. Cascadability of the proposed AOLI has been investigated using the maximum product criterion of the noise margin. The successful operation of the AOLI has been demonstrated for the repetition rate of the pulses as high as 100 Gbps. Finally, tolerance of performance of the design under different types of fabrication imperfections has also been calculated to establish its sustainability in a practical scenario.

  • Raman mediated ultrafast all-optical NOR gate
    Tanmoy Datta and Mrinal Sen
    Optica Publishing Group
    A new device architecture has been proposed in this paper implementing the all-optical cascadable logic NOR functionality. The device functions based on stimulated Raman scattering (SRS) in silicon nanocrystal embedded slotted photonic crystal waveguide (SPCW). Substantial miniaturizations both in operating power and overall footprint of the device have been achieved owing to the ultrahigh SRS gain of silicon nanocrystal and strong spatio-temporal confinement of the SPCW. Successful operation of the device has been demonstrated at a pulse rate that is as high as 125 Gbps.

  • Integrable all-optical pass switch
    T. Datta and M. Sen
    Institution of Engineering and Technology (IET)
    A completely new design for an all-silicon all-optical pass switch has been proposed based on the stimulated Raman scattering (SRS) in silicon nanocrystal embedded slotted photonic crystal waveguide (SPCW). Substantial miniaturisation in the device footprint and operating power has been attained by merging the benefits of the giant SRS gain and the ultra-high optical confinement of the SPCW. The proposed switch offers a tremendously high contrast ratio of ∼ 27 dB between the logic levels and an extraordinary bit rate of 125 Gbps.

  • Efficient pump-signal combiner for stimulated Raman scattering in photonic crystal waveguide
    Tanmoy Datta, Mrinal Sen, Shatrughna Kumar, and Akash Kumar Pradhan
    SPIE-Intl Soc Optical Eng
    Abstract. A silicon photonic crystal (PhC)-based structure is proposed to efficiently couple power from two different wavelengths, targeted to the application of an integrable Raman amplifier. The coupler uses two asymmetrical PhC waveguides as input ports which are joined together and the coupled power is directed to a slotted photonic crystal waveguide-based output port. Coupling efficiency and the other performance metrics are evaluated using a three-dimensional full-vector finite-difference time domain simulation method, which is tested for accuracy using some existing experimental structures and corresponding results. The heuristic approach has been adopted to optimize the design for maximizing the coupling efficiency. Dependence of the coupling performance on different design parameters has also been investigated. Simulations exhibit ∼3-dB coupling losses for both arms in a small footprint as small as ∼54  μm2.

  • Unified coupled equations for Raman mediated interaction in slow-light regime
    Tanmoy Datta, Akash Kumar Pradhan, Shatrughna Kumar, and Mrinal Sen
    IEEE
    A unified mathematical framework has been presented in this paper to describe various manifestations of stimulated Raman scattering (SRS) in the slow-light regime, in presence of multiple pumps while simultaneously considering higher order Stokes. The presented framework also deals with other related optical nonlinearities, and remains valid in the sub-picosecond pulse-width regime.

  • Width-modulated tapered air-slot based photonic crystal nanocavity
    Akash Kumar Pradhan, Tanmoy Datta, Partha Saha, and Mrinal Sen
    IEEE
    A width-modulated air-slot photonic crystal (PhC) nanocavity is designed and analyzed. A tapered air-slot, instead of a regularly arranged rectangular slot, is used at the center of a W1 PhC waveguide. This is to reduce the vertical radiation loss which occurs at the abrupt termination of a rectangular slot, and also to increase the inline coupling from a waveguide to the cavity. A three dimensional finite difference time domain method is used to calculate the resonant wavelength, quality factor and modal volume of the cavity which are found as 1.559 μm, 3.4×106 and 0.154 μm3 respectively.

  • Observation of pulse-phase shift in a highly-nonlinear slotted photonic crystal waveguide
    Shatrughna Kumar, Tanmoy Datta, Akash Kumar Pradhan, and Mrinal Sen
    IEEE
    A silicon nanocrystal embedded Nonlinear Slotted Photonic Crystal Waveguide (NSPhCW) is proposed to reduce the length of the nonlinear section required in a typical all-optical switching device. Phase-variation of a pulse due to the effect of self-phase modulation and cross-phase modulation has been calculated and analysed under slow-light regime using a modified Nonlinear Schrodinger Equation (NSEs). A 180-degree phase shift is observed in a sub-hundred micrometer length of the NSPhCW even without the effect of XPM. Also, the addition of a control signal increases the change in phase shift more drastically and a same phase shift is attained in a smaller length.

  • Width modulated cascaded photonic crystal nanocavity for Wavelength Division Multiplexing


  • LED pumped micron-scale all-silicon Raman amplifier
    Tanmoy Datta and Mrinal Sen
    Elsevier BV


  • All optical and gate based on silicon photonic crystal
    Haraprasad Mondal, Saurav Chanda, Mrinal Sen, and Tanmoy Datta
    IEEE
    All-optical logic AND gate is realized by incorporating an elliptical structure at the Y-junction of two-dimensional photonic crystal waveguides. Principle of operation of the device is based on linear optics and, hence, the device consumes very low power while having very fast response time. The proposed device works in the 1550 nm wavelength band. Additionally, the simplicity of the device structure and also the integrable size makes the device very efficacious for the realization of all-optical logic gate.

  • Design of efficient photonic coupler structures for lumped Raman amplification in silicon waveguides
    Somenath Dutta, Tanmoy Datta, Mrinal Sen, and Arpan Deyasi
    IEEE
    New design for silicon based integrable coupler/pump-combiner is presented in the paper. The pump-combiner is designed with the view of efficient stimulated Raman scattering/Raman amplification in silicon waveguides. Performances of some couplers with well-known structure are also analyzed in this work. Analysis of the new coupler shows significant improvement in the transmittance performance compared with the well-known structures, discussed in the work.

  • Effect of geometry and reverse bias on free carrier lifetime in p-i-n structured optical rib waveguide
    Mrinal Sen, Tanmoy Datta, and Mukul K. Das
    IEEE
    The dependency of effective free carrier lifetime on the lateral dimensions of the Silicon on Insulator (SOI) p-i-n optical rib waveguide has been demonstrated. Effect of reverse bias on the same is also studied. Since carrier generation through two photon absorption is omnipresent in Si, the lifetime of the free carriers plays an important role in determining the net achievable Raman gain in SOI waveguides as it affects nonlinear absorption loss due to free carriers. A detailed analytical model has been derived for the assessment of effective lifetime of free carriers in reverse bias condition in various geometrical features of the waveguide.

RECENT SCHOLAR PUBLICATIONS

  • ANN-based estimation of dispersion characteristics of slotted photonic crystal waveguides
    AK Pradhan, C Prakash, T Datta, M Sen, H Mondal
    Journal of Computational Electronics 23 (3), 552-560 2024

  • All-optical demultiplexer: a review on recent research and developments
    H Mondal, K Goswami, T Datta, R Bose, S Roy, A Sharma
    Brazilian Journal of Physics 53 (4), 93 2023

  • Raman based on-chip photonic quantizers for ADCs
    AK Pradhan, M Sen, T Datta
    Journal of the Optical Society of America B 40 (5), 1076-1082 2023

  • MEMS based bimorph optical temperature sensor
    MS Kaushik Shukla, Tanmoy Datta
    Journal of Applied Physics 131 (21), 214501 2022

  • Raman mediated solitonic pulse compression
    AK Pradhan, M Sen, T Datta
    Journal of the Optical Society of America B 39 (6), 1686-1693 2022

  • Led pumped Raman laser: towards the design of an on-chip all-silicon laser
    AK Pradhan, M Sen, T Datta
    Optics & Laser Technology 147, 107634 2022

  • A review on photonic crystal based all-optical logic decoder: Linear and nonlinear perspectives
    A Sharma, K Goswami, H Mondal, T Datta, M Sen
    Optical and Quantum Electronics 54, 1-24 2022

  • Role of Optics in High Performance Computation (Invited)
    T Datta
    Pragnya 10 (1), 67-70 2022

  • Slotted photonic crystal waveguide: an effective platform for efficient nonlinear photonic applications
    M Sen, T Datta
    Photonics, Plasmonics and Information Optics, 135-171 2021

  • Photonics, plasmonics and information optics: Research and technological advances
    A Deyasi, P Debnath, AK Datta, S Bhattacharyya
    CRC Press 2021

  • Micro cantilever based optical gravimeter
    Y Raj, K Shukla, T Datta, M Sen
    IEEE Sensors 2021

  • All‐optical logic inverter for large‐scale integration in silicon photonic circuits
    T Datta, M Sen
    IET Optoelectronics 14 (5), 285-291 2020

  • SLOTTED PHOTONIC CRYSTAL WAVEGUIDES BASED ALL-OPTICAL LOGIC DEVICES FOR PHOTONIC INTEGRATED CIRCUITS
    T Datta
    Indian Institute of Technology (ISM) Dhanbad, Jharkhand, 826004, India 2020

  • Raman mediated ultrafast all-optical NOR gate
    T Datta, M Sen
    Applied Optics 59 (21), 6352-6359 2020

  • 21 All-Optical Multiplexer based on SRS
    T Datta, M Sen
    International Conference on Fiber Optics and Photonics 2018 (PHOTONICS 2018 2018

  • all-silicon switching
    T Datta, M Sen
    Electronics Letters 54 (25), 1415 2018

  • Integrable all‐optical pass switch
    T Datta, M Sen
    Electronics Letters 54 (25), 1446-1448 2018

  • Width modulated cascaded photonic crystal nanocavity for Wavelength Division Multiplexing
    AK Pradhan, S Kumar, T Datta, M Sen
    JSAP-OSA Joint Symposia, 21p_211B_2 2018

  • Width Modulated cascaded photonic crystal nanocvity for Wavelength Division Multiplexing
    A kumar Pradhan, S Kumar, T Datta, M Sen
    JSAP Annual Meetings Extended Abstracts The 79th JSAP Autumn Meeting 2018 2018

  • Efficient pump–signal combiner for stimulated Raman scattering in photonic crystal waveguide
    T Datta, M Sen, S Kumar, AK Pradhan
    Optical Engineering 57 (7), 075103-075103 2018

MOST CITED SCHOLAR PUBLICATIONS

  • A review on photonic crystal based all-optical logic decoder: Linear and nonlinear perspectives
    A Sharma, K Goswami, H Mondal, T Datta, M Sen
    Optical and Quantum Electronics 54, 1-24 2022
    Citations: 30

  • LED pumped micron-scale all-silicon Raman amplifier
    T Datta, M Sen
    Superlattices and Microstructures 110, 273-280 2017
    Citations: 26

  • All optical AND gate based on silicon photonic crystal
    H Mondal, S Chanda, M Sen, T Datta
    2015 international conference on microwave and photonics (ICMAP), 1-2 2015
    Citations: 24

  • Characterization of slotted photonic crystal waveguide and its application in nonlinear optics
    T Datta, M Sen
    Superlattices and Microstructures 109, 107-116 2017
    Citations: 23

  • All‐optical logic inverter for large‐scale integration in silicon photonic circuits
    T Datta, M Sen
    IET Optoelectronics 14 (5), 285-291 2020
    Citations: 10

  • Raman mediated ultrafast all-optical NOR gate
    T Datta, M Sen
    Applied Optics 59 (21), 6352-6359 2020
    Citations: 10

  • Led pumped Raman laser: towards the design of an on-chip all-silicon laser
    AK Pradhan, M Sen, T Datta
    Optics & Laser Technology 147, 107634 2022
    Citations: 9

  • Integrable all‐optical pass switch
    T Datta, M Sen
    Electronics Letters 54 (25), 1446-1448 2018
    Citations: 7

  • Photonics, plasmonics and information optics: Research and technological advances
    A Deyasi, P Debnath, AK Datta, S Bhattacharyya
    CRC Press 2021
    Citations: 6

  • Micro cantilever based optical gravimeter
    Y Raj, K Shukla, T Datta, M Sen
    IEEE Sensors 2021
    Citations: 5

  • Efficient pump–signal combiner for stimulated Raman scattering in photonic crystal waveguide
    T Datta, M Sen, S Kumar, AK Pradhan
    Optical Engineering 57 (7), 075103-075103 2018
    Citations: 5

  • Micron-scale Raman amplifier: another progressive step towards the maturity of silicon photonics
    T DATTA, M Sen
    Journal of Optics 2017
    Citations: 5

  • MEMS based bimorph optical temperature sensor
    MS Kaushik Shukla, Tanmoy Datta
    Journal of Applied Physics 131 (21), 214501 2022
    Citations: 4

  • Efficient TE-pass polarizer based on Photonic Crystal Slot Waveguide
    RRG Tanmoy Datta, Haraprasad Mondal, Mrinal Sen
    International Conference in Opto-Electronics and Photonics Materials (ICOPMA 2015
    Citations: 4

  • Unified coupled equations for Raman mediated interaction in slow-light regime
    T Datta, AK Pradhan, S Kumar, M Sen
    2018 3rd International Conference on Microwave and Photonics (ICMAP), 1-2 2018
    Citations: 3

  • All-optical demultiplexer: a review on recent research and developments
    H Mondal, K Goswami, T Datta, R Bose, S Roy, A Sharma
    Brazilian Journal of Physics 53 (4), 93 2023
    Citations: 2

  • Raman mediated solitonic pulse compression
    AK Pradhan, M Sen, T Datta
    Journal of the Optical Society of America B 39 (6), 1686-1693 2022
    Citations: 2

  • Slotted photonic crystal waveguide: an effective platform for efficient nonlinear photonic applications
    M Sen, T Datta
    Photonics, Plasmonics and Information Optics, 135-171 2021
    Citations: 2

  • Observation of pulse-phase shift in a highly-nonlinear slotted photonic crystal waveguide
    S Kumar, T Datta, AK Pradhan, M Sen
    2018 3rd International Conference on Microwave and Photonics (ICMAP), 1-2 2018
    Citations: 2

  • Effect of geometry and reverse bias on free carrier lifetime in pin structured optical rib waveguide
    M Sen, T Datta, MK Das
    2013 International Conference on Microwave and Photonics (ICMAP), 1-5 2013
    Citations: 2