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Dr. BHARGAB DAS

Principal Scientist, Micro and Nano Optics Centre (µ-NOC)

Applied Optics: Holography and Digital Holography; Digital Holographic Microscopy; Holographic Data Storage System and Content-addressable Searching; Speckle Interferometry.
Photonics: Fiber Optics Sensor, Fiber Bragg grating based sensors for Dynamic Strain Detection; Fiber Mach-Zehnder and Michelson Interferometers.

Current Work Area

• Development of Fiber Optic Sensors; Fiber Bragg Grating (FBG) & Phase-Shifted Fiber Bragg Grating (PS-FBG) based Sensors for Underwater Acoustic Signal Monitoring and Other Dynamic Signal Sensing.
• Interrogation Techniques for FBG & PS-FBG Sensors; Interferometric Interrogation Techniques of Fiber Grating based Sensors for Small Amplitude Dynamic Perturbation Monitoring.
• Fabrication of Fiber based Mach-Zehnder and Michelson Interferometers for Sensing Applications.
• Non-Invasive Single-Shot Imaging through Scattering Medium, Speckle Interferometry, Speckle Correlation Statistics, Phase Retrieval Algorithms.
• Development of Compact and Portable Platforms for Digital Holographic Microscopy, Phase-contrast Microscopy and Development of Optical Tools for Biomedical Research.

Qualification

• Doctor of Philosophy (Ph. D.) in Physics (Applied Optics) from Physics Department, Indian Institute of Technology Delhi, India. (2005 - 2010).
• Master of Science (M.Sc) in “Physics” from Gauhati University, Guwahati, India. (2001 – 2002).
• Bachelor of Science (B.Sc) from Gauhati University, Guwahati, India. (1998 – 2000).
• NET(UGC-JRF)-2004; GATE-2003.

R&D Interest

• Development of fiber optic hydrophone for underwater acoustic signal sensing.
• Interferometric interrogation technique for fiber Bragg grating (FBG) and Pi-phase shifted fiber Bragg grating (πFBG) sensors for small-amplitude dynamic perturbation measurement.
• Complex-amplitude information retrieval through visually opaque scattering layer/medium.
• Development of optical tools for biomedical research.

Research Publications

1. HEENA, KOMAL SHARMA, KAMLESH KUMAR, DAS BHARGAB, KUMAR RAJ. Uniform holographic films of acrylamide/polyvinyl alcohol photopolymer using an automatic film applicator based on doctor blade technique. Progress in Organic Coatings. 01-02-2024, 187, 108108
2. CHANDRA SOURAV, SARKAR TUSHAR, KUMAR RAJ, DAS BHARGAB, SINGH RAKESH KUMAR. Hanbury Brown–Twiss approach for imaging through a dynamic scattering medium. Optics Letters. 01-07-2023, 48(13), 3391-3394
3. SARKAR SIDDHARTHA, ROY ANUBRATA, KUMAR SATISH, DAS BHARGAB. Seismic Intensity Estimation Using Multilayer Perceptron for Onsite Earthquake Early Warning. IEEE Sensors Journal. 22-12-2021, 22(3), 2553 - 2563
4. CHOPRA ADITI, MOHANTA GIRISH CHANDRA, DAS BHARGAB, BHATNAGAR RANDHIR, PAL SUDIPTA SARKAR. Tuning the Sensitivity of a Fiber-Optic Plasmonic Sensor: An Interplay Among Gold Thickness, Tapering Ratio and Surface Roughness. IEEE Sensors Journal. 15-05-2021, 21(10), 12153-12161
5. SRIVASTAVA DEEPA, DAS BHARGAB. Interrogation techniques for p-phase-shifted fiber Bragg grating sensor: A review. Sensors and Actuators A-Physical . 01-11-2020, 315, 112215
6. KALRA MANISH, KUMAR SATISH, DAS BHARGAB. Seismic Signal Analysis Using Empirical Wavelet Transform for Moving Ground Target Detection and Classification. IEEE Sensors Journal. 15-07-2020, 20(14), 7886 - 7895
7. KALRA MANISH, KUMAR SATISH, DAS BHARGAB. Moving Ground Target Detection with Seismic Signal using Smooth Pseudo Wigner-Ville Distribution. IEEE Transactions on Instrumentation and Measurement. 01-06-2020, 69(6), 3896-3906
8. DWIVEDI GAURAV, DEBNATH SANJIT KUMAR, DAS BHARGAB, KUMAR RAJ. Revisit to comparison of numerical reconstruction of digital holograms using angular spectrum method and Fresnel diffraction method. Journal of Optics. 04-12-2019, 49, 118-126
9. KAUSHIK SIDDHARTH, TIWARI UMESH KUMAR, NILIMA, PRASHAR SHIVENDU, DAS BHARGAB, SINHA RAVINDRA KUMAR. Label-free detection of Escherichia?coli bacteria by cascaded chirped long period gratings immunosensor. Review of Scientific Instruments. 11-02-2019, 90, 025003
10. VARGHESE ANNIE, DAS BHARGAB, SINGH RAKESH KUMAR. Highly stable lens-less digital holography using cyclic lateral shearing interferometer and residual decollimated beam. Optics Communications . 01-09-2018, 422, 3-7
11. SRIVASTAVA DEEPA, TIWARI UMESH KUMAR, DAS BHARGAB. Interferometric interrogation of p-phase shifted fiber Bragg grating sensors. Optics Communications . 01-03-2018, 410, 88-93
12. SOMKUWAR ATUL S., DAS BHARGAB, VINU R V, PARK YONG KEUN, SINGH RAKESH KUMAR. Holographic imaging through a scattering layer using speckle interferometry. Journal of the Optical Society of America A . 01-08-2017, 34(8), 1392-1399
13. DAS BHARGAB, BISHT NANDAN S, VINU R V, SINGH RAKESH KUMAR. Lensless complex amplitude image retrieval through a visually opaque scattering medium. Applied Optics. 01-06-2017, 56(16),
14. DAS BHARGAB, CHANDRA VIKASH. Fiber-MZI-based FBG sensor interrogation: Comparative study with a CCD spectrometer. Applied Optics. 10-10-2016, 55(29), 8287-8292
15. PRAMITHA VAYALAMKUZHI, DAS BHARGAB, JOSEPH JOBY, JOSEPH RANI, SREEKUMAR KRISHNAPILLAI, KARTHA CHERANELLORE SUDHA. High efficiency panchromatic photopolymer recording material for holographic data storage systems. Optical Materials. 01-02-2016, 52, 212-218
16. CHANDRA VIKASH, TIWARI UMESH KUMAR, DAS BHARGAB. Elimination of Light Intensity Noise Using Dual-Channel Scheme for Fiber MZI-Based FBG Sensor Interrogation. IEEE Sensors Journal. 06-01-2016, 16(8), 2431 - 2436
17. SINGH RAKESH KUMAR, SHARMA ANANDRAJ M, DAS BHARGAB. Quantitative phase-contrast imaging through a scattering media. Optics Letters. 01-09-2014, 39(17), 5054-5057

1. HEENA, KOMAL SHARMA, KAMLESH KUMAR, DAS BHARGAB, KUMAR RAJ. Uniform holographic films of acrylamide/polyvinyl alcohol photopolymer using an automatic film applicator based on doctor blade technique. Progress in Organic Coatings. 01-02-2024, 187, 108108

2. CHANDRA SOURAV, SARKAR TUSHAR, KUMAR RAJ, DAS BHARGAB, SINGH RAKESH KUMAR. Hanbury Brown–Twiss approach for imaging through a dynamic scattering medium. Optics Letters. 01-07-2023, 48(13), 3391-3394

3. SARKAR SIDDHARTHA, ROY ANUBRATA, KUMAR SATISH, DAS BHARGAB. Seismic Intensity Estimation Using Multilayer Perceptron for Onsite Earthquake Early Warning. IEEE Sensors Journal. 22-12-2021, 22(3), 2553 - 2563

4. CHOPRA ADITI, MOHANTA GIRISH CHANDRA, DAS BHARGAB, BHATNAGAR RANDHIR, PAL SUDIPTA SARKAR. Tuning the Sensitivity of a Fiber-Optic Plasmonic Sensor: An Interplay Among Gold Thickness, Tapering Ratio and Surface Roughness. IEEE Sensors Journal. 15-05-2021, 21(10), 12153-12161

5. SRIVASTAVA DEEPA, DAS BHARGAB. Interrogation techniques for p-phase-shifted fiber Bragg grating sensor: A review. Sensors and Actuators A-Physical . 01-11-2020, 315, 112215

6. KALRA MANISH, KUMAR SATISH, DAS BHARGAB. Seismic Signal Analysis Using Empirical Wavelet Transform for Moving Ground Target Detection and Classification. IEEE Sensors Journal. 15-07-2020, 20(14), 7886 - 7895

7. KALRA MANISH, KUMAR SATISH, DAS BHARGAB. Moving Ground Target Detection with Seismic Signal using Smooth Pseudo Wigner-Ville Distribution. IEEE Transactions on Instrumentation and Measurement. 01-06-2020, 69(6), 3896-3906

8. DWIVEDI GAURAV, DEBNATH SANJIT KUMAR, DAS BHARGAB, KUMAR RAJ. Revisit to comparison of numerical reconstruction of digital holograms using angular spectrum method and Fresnel diffraction method. Journal of Optics. 04-12-2019, 49, 118-126

9. KAUSHIK SIDDHARTH, TIWARI UMESH KUMAR, NILIMA, PRASHAR SHIVENDU, DAS BHARGAB, SINHA RAVINDRA KUMAR. Label-free detection of Escherichia?coli bacteria by cascaded chirped long period gratings immunosensor. Review of Scientific Instruments. 11-02-2019, 90, 025003

10. VARGHESE ANNIE, DAS BHARGAB, SINGH RAKESH KUMAR. Highly stable lens-less digital holography using cyclic lateral shearing interferometer and residual decollimated beam. Optics Communications . 01-09-2018, 422, 3-7

11. SRIVASTAVA DEEPA, TIWARI UMESH KUMAR, DAS BHARGAB. Interferometric interrogation of p-phase shifted fiber Bragg grating sensors. Optics Communications . 01-03-2018, 410, 88-93

12. SOMKUWAR ATUL S., DAS BHARGAB, VINU R V, PARK YONG KEUN, SINGH RAKESH KUMAR. Holographic imaging through a scattering layer using speckle interferometry. Journal of the Optical Society of America A . 01-08-2017, 34(8), 1392-1399

13. DAS BHARGAB, BISHT NANDAN S, VINU R V, SINGH RAKESH KUMAR. Lensless complex amplitude image retrieval through a visually opaque scattering medium. Applied Optics. 01-06-2017, 56(16),

14. DAS BHARGAB, CHANDRA VIKASH. Fiber-MZI-based FBG sensor interrogation: Comparative study with a CCD spectrometer. Applied Optics. 10-10-2016, 55(29), 8287-8292

15. PRAMITHA VAYALAMKUZHI, DAS BHARGAB, JOSEPH JOBY, JOSEPH RANI, SREEKUMAR KRISHNAPILLAI, KARTHA CHERANELLORE SUDHA. High efficiency panchromatic photopolymer recording material for holographic data storage systems. Optical Materials. 01-02-2016, 52, 212-218

16. CHANDRA VIKASH, TIWARI UMESH KUMAR, DAS BHARGAB. Elimination of Light Intensity Noise Using Dual-Channel Scheme for Fiber MZI-Based FBG Sensor Interrogation. IEEE Sensors Journal. 06-01-2016, 16(8), 2431 - 2436

17. SINGH RAKESH KUMAR, SHARMA ANANDRAJ M, DAS BHARGAB. Quantitative phase-contrast imaging through a scattering media. Optics Letters. 01-09-2014, 39(17), 5054-5057

Patents

Patent(s) Filed
1. A DEVICE AND METHOD FOR POSITIONING MICRO HOT PROBE FOR HEATING HOT ZONE BETWEEN MICRO HOT PROBE AND CHIRPED BRAG GRATING OPTICAL FIBER Country Filed: WO Application Number: PCT/IN2020/050755 Date of Filing: 31-08-2020 Inventor(s): TIWARI UMESH KUMAR, DAS SUPANKAR, DAS BHARGAB, MONDAL SAMIR K, SINHA RAVINDRA KUMAR

Patent(s) Filed

1. A DEVICE AND METHOD FOR POSITIONING MICRO HOT PROBE FOR HEATING HOT ZONE BETWEEN MICRO HOT PROBE AND CHIRPED BRAG GRATING OPTICAL FIBER
Country Filed: WO
Application Number: PCT/IN2020/050755 Date of Filing: 31-08-2020
Inventor(s): TIWARI UMESH KUMAR, DAS SUPANKAR, DAS BHARGAB, MONDAL SAMIR K, SINHA RAVINDRA KUMAR

Significant recognition: Awards, Honours and Fellowships

• SPIE student award at ICOP-2009: International Conference On Optics and Photonics, CSIO, Chandigarh, India.
• Optical Society of America (OSA) Foundation Student Travel Grant, 2009.
• Member of The optical society (OSA) and Optical Society of India.

Other Information

• Honorary Assistant Professor at AcSIR-CSIO (Academy of Scientific and Innovative Research).
• Post-Doctoral Research Associate, Physics Department, University of Massachusetts at Boston, MA, USA (February 2010 – February 2012).

Technology (Developed/Transfered/Commercialised) / Software Applications, Algorithms designed/developed/deployed and implemented

Project(s) Ongoing

Project(s) Completed

Contact

Email:

bhargab[dot]das[at]csio[dot]res[dot]in

Telephone:

0172672286

CSIR-CSIO

Employee Profile