Geophysical and Applied Optics and Photonics laboratory

Publication (Year Wise)


  • N. Bora, R. Biswas and A. Dobrynina, Regional variation of coda Q along Kopili fault and its implications, Tectonophysics, 20187, doi. 10.1016@j.tecto.2017.11.008
  • D. Paul and R. Biswas, Highly sensitive LSPR based photonic crystal fiber sensor with embodiment of nanospheres in different material domain, Optics and Laser Technology 101 (2018) 379–387.
  • J.M. Borgohain, K. Borah, R. Biswas, D. Bora, Seismic b-value anomalies prior to the 3rd January 2016, Mw=6.7 Manipur earthquake of northeast India, Journal of Asian Earth Sciences 154 (2018) 42–48.
  • B. S. Baruah, R. Biswas, Selective detection of arsenic (III) based on colorimetric approach in aqueous medium using functionalised gold nanoparticles unit, Material Research Express, 5(1), 2018
  • D. Paul and R. Biswas, Multiple material domains based modal parameter analysis of photonic crystal fiber, Laser Research and Applications Journal, 1:002(2018).
  • D. Paul and R. Biswas, Facile fabrication of sensing set-up for size detection of nanoparticles, accepted in IEEE Transactions on Nanotechnology, 2018.


  • N. Bora, R. Biswas, Quantifying Regional Body Wave Attenuation in a Seismic Prone Zone of Northeast India, Pure and Applied Geophysics, 2017, (174), 1953-1963.
  • R. Biswas, Low cost wavelength selective evanescent fiber optic temperature and refractive Index sensor (2017), European Physical Journal Plus (in Press), Eur. Phys. J. Plus (2017) 132: 207.
  • D. Paul, S. Dutta, D. Saha and R. Biswas, LSPR based Ultra-sensitive low-cost U-bent optical fiber for volatile liquid sensing, Sensor and Actuators B (Chemical), 2017, (250) 198–207
  • R. Biswas, P. K. Karmakar, C. Gogoi, D. Sarma, A Comparative Analysis of Hetero Core Spliced MSM and SMS System in terms of Transmittance, International Journal of Photonics and Optical Technology, 2017, 3(9), 16-19.
  • N. Bora, R. Biswas and D. Bora, Assessing attenuation characteristics prevailing in a seismic prone area of NER India, IOP: Journal of Geophysics and Engineering, 2017, (14) 1368–1381


  • B. Bora and R. Biswas, Digital IC tester with truth table, Electronics for you, January Ed., 2016.
  • R. Biswas, Basics of Cognitive Radio: An appraisal. CRC Press, Taylor and Francis, 2016 [DOI: 10.1201/9781315367545-3, Print ISBN: 978-1-4987-6298-4, eBook ISBN: 978-1-4987-6299-1]
  • R. Biswas, S. Baruah, Shear wave velocity estimates through combined use of two passive techniques of a tectonically active area, Acta Geophysica, 2016 (64/6)
  • R. Biswas, Non-Linear Earthquake Site Response Analysis: A case study in Shillong City, IJEHRM, 2016 (3:4)
  • D. Paul, S. Dutta and R. Biswas, LSPR enhanced gasoline sensor, Journal of Physics D: Applied Physics, 2016(49) 305104.
  • R. Biswas and P. Karmakar, All fiber optic hetero-core spliced multimode single mode multimode filter, Optical and Quantum Electronics, 2016 (48:385)


  • D. Paul, R. Biswas and N.S. Bhattacharya, Investigating photonic crystal fiber within E to L communication bandwith different material composites, Optik 126 (2015) 4640–4645.
  • D. Paul, R. Biswas and N. S. Bhattacharyya, Modal parameter analysis for crown glass and phosphate glass photonic crystal fiber, Ind. J Phys (2015), 89(7):737–741
  • R. Biswas, P. Deb and S. Das, Novel optoelectronic properties in barbed wire nanophotonic structures of indium telluride, Optical Materials 47 (2015) 586–588.
  • D. Paul, R. Biswas and N. S. Bhattacharya, Predicting different losses of photonic crystal fibers in material and hetero-core domain, Optical Materials 48 (2015) 110–120.
  • P. Nath, S. K. Neog and R. Biswas, All fiber-optic sensor for monitoring pressure fluctuations in ON/OFF state IEEE Sensors Journal, vol. 13, no. 4, pp. 1148–1152, 2013


  • R. Biswas and P. Nath, Sensitivity analysis of two-fiber optic sensors, Indian J Phys (2014) 88(10):1105–1110.
  • I. Hussain, P. Nath and R. Biswas, Liquid-level sensing based on periodic evanescent field absorption from a multimode optical fiber, Current Science (2014), vol. 106, no. 3, pp. 424–427.
  • R. Biswas, D. Bora and S. Baruah, Mapping Sediment Thickness in Shillong City of Northeast India through Empirical Relationship, Journal of Earthquakes, Volume 2015, Article ID 572619
  • R. Biswas, S. Baruah and S. Baruah, A Brief overview of site response estimation techniques, Mistral Services: Italy, ISBN: 978-88-98161-25-6., 2014
  • D. Bora, S. Baruah, R. Biswas, Moho Depth Variation In Shillong-Mikir Hills Plateau And Its Adjoining Region Of North-eastern India Estimated From Reflected and Converted Waves, Journal of Earthquake Science, (June) 2014.


  • R. Biswas, D. Bora, S. Baruah, A. Kalita and S. Baruah, The Effects of Attenuation and Site on the Spectra of Microearthquakes in the Shillong Region of Northeast India, Pure and Applied Geophysics, vol. 170, no. 11, pp. 1833–1848, 2013.
  • R. Biswas, D. Bora and S. Baruah, Influence of attenuation and site on microearthquakes' spectra in Shillong region, of Northeast, India: A case study; Acta Geophysica, vol. 61, no. 4, pp. 886–904, 2013.
  • D. Bora, R. Biswas, and S. Baruah Estimation of source parameters of local earthquakes originated in Shillong-mikir plateau and its adjoining region of northeastern India, Bulletin of the Seismological Society of America, vol. 103, no. 1, pp. 437–446, 2013


  • S. Baruah, S. Baruah, A. Kalita, R. Biswas, J.R. Kayal, Moment Magnitude (MW) and Local Magnitude (ML) Relationship for Earthquakes in Northeast India, Pure and Applied Geophysics, vol. 169, no. 11, pp. 1977–1988, 2012
  • S. Baruah, R. Biswas, A. Kalita, S. Baruah, Moment magnitude - local magnitude relationship for the earthquakes of the Shillong-Mikir plateau, Northeastern India Region: a new perspective , Geomatics, Natural Hazards and Risk, vol. 3, no. 4, pp. 365–375, 2012.


  • S. Baruah, D. K. Bora, R. Biswas, Estimation of Crustal discontinuities from reflected seismic waves recorded at Shillong and Mikir Hills Platea, International Journal of Earth Sciences July, 2011, Vol.100, No.6,pg.1283-1292.
  • O.Erteleva, F.Aptikaev, Saurabh Baruah, Santanu Baruah, Rajib Biswas, Aditya Kalita, Sajal Deb, Juan R. Kayal., Prognosis of the strong ground motion parameters on the Shillong Plateau and in adjoining areas Russian journal Voprosy inzhenernoj seismologii, 2011, Vol. 38
  • R. Biswas and S. Baruah, Site Response Estimation by Nakamura Method: Shillong City, Northeast India, MEMOIR OF THE GEOLOGICAL SOCIETY OF INDIA, No. 77, 2011, ISBN: 978-81-907636-2-2, pp. 173-183