DR. SAIPRASAD R L N

Professor

Department of Physics

National Institute of Technology, Warangal - 506004, Telangana, INDIA

: saiprd@nitw.ac.in,rlnsaiprasad@gmail.com

: 9491151070,08702552200,8332969469

Interests: Electronic Instrumentation,Fiber Optic Sensors

Specializations:  Fiber Optic Sensing, Electronic Instrumentation

 

Course Taught Previously

 

Course Taught Previously

 

 

  1.  Electromagnetic Theory
  2.  Linear and Digital IC Applications
  3.  Control Systems
  4.  Measurement Techniques for Civil Engineers
  5.  Transducers and Measurement Techniques
  6.  Physics
  7. Modern Physics

 

 

 

 

 Courses Currently Being Taught

 

 

  1.   Digital Signal Processing
  2.  Optoelectronics
  3.  Signals and Systems
  4.   Fiber Optic Communications
  5.  Communication Systems

Publications

 


  Journal Publication Details

 

 

  

  1.   High-temperature measurement using fiber Bragg grating sensor accompanied by a low-cost detection system. Venkata Reddy Mamidi, SrimannarayanaKamineni, L. N. Sai Prasad Ravinuthala, Manohar Martha, Sai Shankar Madhuvarasu, Venkatappa Rao Thumu:  Journal of Applied Remote Sensing 05/2015; 9(1). DOI:10.1117/1.JRS.9.094098.
  2. FBG-based novel sensor for high-temperature measurement and Its low-cost interrogation. Venkata Reddy, K. Srimannarayana, R. L. N. Sai Prasad, T. V. Apparao, P. Vengal Rao:  Proceedings of SPIE - The International Society for Optical Engineering 05/2015; 9506. DOI:10.1117/12.2181966.
  3. FIBER Bragg Grating (FBG) sensor for estimation of Crack Mouth Opening Displacement (CMOD) in concrete K Samrajyam, RLNS Prasad, TDG Rao, B Sobha Journal of Optics 44 (4), 346-352, 2015.
  4. Plastic Optic Fiber (POF) Based Phase Difference Measurement Method For Estimation Of Crack Mouth Opening Displacement (CMOD) In Concrete K Samrajyam, S Bathalapalli, TDG Rao, RLNS Prasad i-Manager's Journal on Civil Engineering 4 (2), 13,2014
  5. Method to athermalize a long period fiber  grating for  interrogation of fiber Bragg grating-based sensors  Venkata Reddy mamidi , Srimannarayana kamineni, L.N. Sai Prasad Ravinuthala, Venkatapparao, Vengal Rao Pachava, , Optical Engineering, Vol. 53, issue 9, 2014.
  6. Fiber Bragg Grating-based high temperature sensor and its low cost interrogation system with enhanced resolution Venkata Reddy MAMIDI, Srimannarayana KAMINENI, L.N. Sai Prasad RAVINUTHALA, Sai Shankar MADHUVARASU, Venkatappa Rao THUMU, Vengal Rao PACHAVA, Kishore PUTHA, , Optica Applicata, vol. 44, issue 2, 299-308, 2014. 
  7. Characterization of encapsulating material for fiber Bragg grating based temperature sensor Venkata Reddy mamidi , Srimannarayana kamineni, L.N. Sai Prasad Ravinuthala, Venkatapparao, Vengal Rao Pachava, , Fiber and Integrated Optics, Vol. 33, issue 4, 325-335, 2014.
  8. SENSING OF HYDROSTATIC PRESSURE USING FBG SENSOR FOR LIQUID LEVEL MEASUREMENT D. Sengupta, M. Sai Shankar, P. Saidi Reddy, R. L. N. Sai Prasad, and K. Srimannarayana, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,  Vol. 54, No. 7, 1679-1683, 2012.
  9. A Fiber Optic Speedometer using Bifurcated Bundle Fiber P. Kishore, D. Dinakar, P. Vengal Rao, M. Sai Shankar, D.Sengupta K. Srimannarayana, and R.L.N Sai Prasad, Journal of Emerging Trends in Engineering and Applied Sciences, Vol. 3, No. 4, pp : 699-701, 2012.
  10. Method for enhancing and controlling temperature sensitivity of fiber Bragg grating sensor based on bimetallic strips P Saidi Reddy, R L N Sai Prasad, D Sengupta, M Sai Shankar, K S Narayana, U.K Tiwari, IEEE Photonics Journal, Vol.4, No.3, pp. 1035-1041, 2012 .     
  11. Encapsulated fiber Bragg grating sensor for high temperature measurements Parne Saidi Reddy, Ravinuthala Lakshmi Narayana Sai Prasad, Dipankar Sen Gupta, Madhuvarasu Sai Shankar, Kamineni S. Narayana, Putha Kishore, Optical Engineering 50(11), 114401-1-6, 2011.
  12. Strain-Temperature Discrimination Using a Single FBG at Cryogenic Region D. Sengupta, M. Sai Shankar, Tiwari, Umesh, P. Kishore, P. Saidi Reddy, R. L. N Sai Prasad, P. Vengal Rao, K. S. Narayana, Sensors & Transducers Journal, Vol. 131, Issue 8, 36-42, 2011.
  13. Liquid level measurement using Bragg grating sensor D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, OPTOELECTRONICS AND ADVANCED MATERIALS  RAPID COMMUNICATIONS Vol. 5, No. 7, p.742  744,2011.
  14.  Micro-change in liquid level sensing by extrinsic fiber optic sensor D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N. SAI PRASAD, K. S. NARAYANA, P. KISHORE, OPTOELECTRONICS AND ADVANCED MATERIALS  RAPID COMMUNICATIONS, Vol. 5, No. 5, p. 491  494, 2011.
  15. A simple FBG sensor for strain-temperature discrimination P.Saidi Reddy, R.L.N Sai Prasad, D. Sengupta, M. Sai Shankar, K.S. Narayana, microwave and optical technology letters. Vol.53 (5), 2011, pp. 1021-1024.
  16. Polymer coated FBG sensor for cryogenic temperatures P.Saidi Reddy, R.L.N Sai Prasad, D. Sengupta, M. Sai Shankar, K.S. Narayana, microwave and optical technology letters. Vol.53 (5), 2011,pp. 1154-1157
  17. Effect of offset between transmitting and receiving Fiber tips on dual-fiber displacement sensing P. KISHORE, D. DINAKAR, M. SAI SHANKAR, R. L. N. SAI PRASAD, K.SRIMANNARAYANA, P. VENGAL RAO, D. SENGUPTA, P. SAIDI REDDY, Optoelectronics and Advanced Materials-Rapid Communication, Vol. 5, No. 7, July 2011, p. 778 - 781
  18. Simultaneous monitoring of Temperature and liquid boundary detection using fiber Bragg gratings D. Sengupta, M. Sai Shankar, P.Saidi Reddy, R.L.N Sai Prasad, K. S. Narayana  Optoelectronics and Advanced Materials-Rapid Communication, Vol.4(1),2010, p. 939- 942.
  19.  Axial strain based Bragg grating level sensor D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, OPTOELECTRONICS AND ADVANCED MATERIALS RAPID COMMUNICATIONS Vol. 4, No. 12, p. 1933-1936, 2010.
  20.  Performance of the reflected concentration sensor using plastic fibers D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, OPTOELECTRONICS AND ADVANCED MATERIALS  RAPID COMMUNICATIONS Vol. 4, No. 8, p. 1066 - 1069, 2010.
  21. Liquid level switch using Bragg grating D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, OPTOELECTRONICS AND ADVANCED MATERIALS RAPID COMMUNICATIONS Vol. 4, No. 7, p. 939 - 942, 2010.
  22.  A low cost fiber optic refractive index sensor D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, OPTOELECTRONICS AND ADVANCED MATERIALS RAPID COMMUNICATIONS Vol. 4, No. 2, p. 128- 131, 2010.
  23. A novel method for high temperature measurements using fiber Bragg gratings P.Saidi Reddy, R.L.N Sai Prasad, D. Sengupta, M. Sai Shankar, K.S. Narayana, Optical Applicata, Vol.40(3), 2010.
  24.  Teflon-coated fiber Bragg grating sensor for wide range of temperature measurements P Saidi Reddy, R L N Sai Prasad, D Sengupta, M Sai Shankar and K S Narayana ,. Journal of Optoelectronics and Advanced Materials, Vol.12(10),pp.2039-2043, 2010.
  25.  Thermal stability of fiber Bragg gratings in different fibers P.Saidi Reddy, R.L.N Sai Prasad, D. Sengupta, M. Sai Shankar and K.S. Narayana, Optoelectronics and Advanced Materials-Rapid Communication, Vol.3(12),pp 1280-1284, 2009.
  26. Fiber Bragg Grating and Long Period Grating  sensor for simultaneous measurement and discrimination of strainand temperature effects K. Srimannarayana, M. Sai Shankar, R. L. N. Sai Prasad et. Al, Optica Applicata, Vol XXXVIII, No.3, 2008.
  27.  Superstructure LPG and FBG and its use for simultaneous measurement of strain and temperature K. Srimannarayana, M. Sai Shankar, R. L. N. Sai Prasad et. al ,Journal of Structural Engineering,   Vol.35, No.2, pp.117-119, 2008.
  28.  Quasi-Distributed Fiber Bragg Grating Array Sensor for High Temperature Furnace Application P. Saidi   Reddy, R. L. N. Sai Prasad,D. Sen Gupta, M. Sai Shankar, K. Srimannarayana,J. Canning, K. Cookand P. Ravinder Reddy,Photonic Sensors(Under Review)
  29. Effect of  film thickness and angular sensitivity on diffraction efficiency of dichromated gelatine gratings S. Ravi Prasada Rao, K. Srimannarayana, M. Sai Shankarand R. L. N. Sai  Prasad, in J. Atti Della Fondazione Giorgio Ronchi.
  30. Design of RF Power Amplifiers and Coupling Circuits for Ultrasonic Imaging R. L. N.Sai Prasad, J. Ramachander Rao, V. Venkateswara Rao, V. Vasudeva Rao, J.Pure, Appl.Ultrasonics, 7(1985), pp.10-17.

 

 

 

 Conference Proceeding

 

 

 

  1. Study of Bridge Weigh-in-Motion using FBG Sensors A. Sravanthi, P. Kishore, R. L. N. Sai Prasad, and P. Rathish Kumar The International Conference on Fiber Optics and Photonics 
    • 4-8 December 2016, IIT Kanpur.  doi.org/10.1364/PHOTONICS.2016.Tu3G.3.
  2. FBG-based temperature sensor package. Venkata Reddy Mamidi, RLN Prasad, K. Srimannarayana, M. Manohar, TV Apparao: Industrial and Information Systems (ICIIS), 2014 9th International Conference on, Gwalior, India; 12/2014.
  3. An FBG based hydrostatic pressure sensor for liquid level measurements D. Sengupta, M. Sai Shankar, P. Saidi Reddy, R. L. N Sai Prasad, K. Srimannarayana, Proc. of SPIE, 8426, 84260C-1-2, 2012.
  4. Erasure dynamics of Bragg gratings in hydrogen loaded and non hydrogen loaded fibers P Saidi Reddy, G R C Reddy and R L N Sai Prasad, Proc. of SPIE.M212-MIOMD-XI, USA, 2012
  5. Enhancement of low temperature sensitivity using bimetallic strip P Saidi Reddy, R L N Sai Prasad, D Sengupta, M Sai Shankar and K S Narayana,. APOS 2012, Proc. of SPIE, Australia Vol.8031,pp.1-6, 2012     
  6. Enhancing the temperature sensitivity of fiber Bragg grating using bimetallic strips Parne Saidi, R L N sai Prasad, sengupta dipankar, Putha Kishore, M Sai Shankar, Kamineni  Srimannarayana, Tiwari, Umesh, Proceeding of SPIE, Vol. 8351, pp. 83511B-1-6, Third Asia Pacific Optical Sensors Conference 2012.
  7. Enhancing the Temperature sensitivity of Bragg gratings using different sensor heads P Saidi Reddy, G R C Reddy and R L N Sai Prasad, Proc. of SPIE October 2012      
  8. Development of high sensitivity pressure sensor using reduced clad FBG P Vengal Rao, K S Narayana, D Sengupta, P Saidi Reddy and R L N Sai Prasad, Proc. of SPIE Vol.8439, PP.90, 2012      
  9. Multimode fused coupler fiber optic pressure sensor P Vengal Rao, K S Narayana, D Sengupta, P Saidi Reddy and R L N Sai Prasad, AIP Conf. Proceedings Vol.1391, pp.450-452, 2011
  10. Improved low temperature sensing using PMMA coated FBG D Sengupta, M Sai Shankar, P Saidi Reddy, R L N Sai Prasad and K S Narayana Proc. of SPIE Vol.8311, pp.831103-1-5, 2011   
  11. Fiber Bragg Grating Array as a Quasi Distributed Temperature Sensor for Furnace Boiler Applications P. Saidi Reddy, R L N Sai Prasad, D. Sengupta, M. Sai Shankar, K. Srimannarayana, P. Kishore, P. Vengal Rao "" AIP conf. proc.1391, Optics11, 440-442 (2011).
  12. An Encapsulated Fiber Optic Fuel Level Sensor D. Sengupta, M. Sai Shankar, P.Saidi Reddy, R.L.N Sai Prasad, K. S. Narayana, P.Kishore, Proc. of SPIE Vol. 8001, pp.78-81, 2011         .
  13. An Improved Low Temperature Sensing Using PMMA Coated FBG D.Sengupta, M.Sai Shankar, P.Saidi Reddy, R.L.N Sai Prasad, K.S.Narayana, P.Kishore, Proc. of SPIE-OSA-IEEE Asia Communications and Photonics, Vol. 8311, 831103-1-5, 2011.
  14. Temperature Compensated Liquid Level Sensor using FBGs and a Bourdon tube D. Sengupta, M. Sai Shankar, P. Vengal Rao, P. Saidi Reddy, R.L. N Sai Prasad, P. Kishore, K. Srimannarayana, Proc. of SPIE-OSA-IEEE Asia Communications and Photonics, Vol. 8311, 83110R-1-6, 2011.
  15. An FBG Sensor for Strain and Temperature Discrimination at Cryogenic Regime D. Sengupta, M. Sai Shankar, P. Kishore, P. Saidi Reddy, R. L. N Sai Prasad, P.Vengal Rao, K. Srimannarayana, Proc. of SPIE-OSA-IEEE Asia Communications and Photonics, Vol. 8311, 831106-1-5, 2011.
  16. A real time fiber optic micro displacement level sensor D.Sengupta, M.Sai Shankar, P.Saidi Reddy, R.L.N SaiPrasad, K.S.Narayana, P.Kishore, IEEE proceedings, 358-361, 2011.
  17.  A simple underground liquid level sensor using FBG D. Sengupta, M. Sai Shankar, P. Saidi Reddy, R.L.N Sai Prasad, K.Srimannarayana, AIP Conf. Proc. 1391, 431-433 (2011).
  18. Strain-Temperature Discrimination Using Single Bragg Grating P.Saidi Reddy, R.L.N Sai Prasad, D.Sen Gupta, M. Sai Shankar, K. S. Narayana, P. Kishore PHOTONICS 2010: 10th International Conference on Fiber Optics & Photonics December 11-15, 2010, IIT Guwahati, India.
  19. Liquid level monitoring using Bragg grating embedded on a cantilever D. Sengupta, M. Sai Shankar, P.Saidi Reddy, R.L.N Sai Prasad, K. Srimannarayana, Photonics 2010, Paper presented in International Conference on  Fiber Optics and Photonics Organized by IITG, PHOTONICS-2010, Dec.2010
  20. A Novel Method for High temperature Measurement P Saidi Reddy, R L N Sai Prasad, D Sengupta, M Sai Shankar and K S Narayana, International conference on trends in optics and photonics,. (ICONTOP) Vol.1, march1-4,PP.625-632, 2009   
  21. Teflon coated fiber Bragg grating sensor response at cryogenic temperatures P Saidi Reddy, R L N Sai Prasad, D Sengupta, M Sai Shankar and K S Narayana, International conference on Optics and Photonics(ICOP-2009), Vol.1,sep31-2nd October,2009   
  22. Simultaneous measurement of Relative Humidity and Temperature using Fiber Bragg Grating D Sengupta, M Sai Shankar, P Saidi Reddy, R L N Sai Prasad and K S Narayana International Conference on Trends in Optics and Photonics(IConTOP) Vol.1, March 1-4,pp.582-587, 2009         
  23. Fast Detection of Humidity with an Etched Fiber Sensor D Sengupta, M Sai Shankar, P Saidi Reddy, R L N Sai Prasad and K S Narayana, ICOP-2009, CSIO, Chandigarh Vol.1, pp108, Oct 30 Nov1, 2009   
  24. SIMULATION OF MULTI.PARAMETER FIBER  BRAGG  GRATING  SENSOR K. Srimannarayana, M. Sai Shankar,  R.L.N.Sai  Prasad,  D. Sengupta-, N. Eknath  Rao, S.R.P.Rao, Photonics 2008, 223.
  25. Design and Simulation of Sapphire Fiber Bragg Grating Sensor for High Temperature Measurements P.Saidi Reddy, R.L.N Sai Prasad, K.S. Narayana, M. Sai Shankar, D. Sen Gupta and S. Ravi Prasad, Proceedings of the Sixth Structural Engineering Convention, SEC-2008,December 18 - 20, 2008, Chennai, India, pp. 1023 - 1032
  26.  Development of high sensitive optical fiber sensors using chemical etching method  Kishore P, Vengal Rao P, Dinakar D, Srimannarayana K, Sai Shankar M, Sai Prasad RLN,Poster Presentation in the National Conference on Interface between Chemical Sciences and Technologies , Department of chemistry, NIT Warangal 29-30, 2011.
  27. Sapphire fiber Bragg gratins Sensor for high temperature measurements P.Saidi Reddy, D. Sengupta, R.L.N Sai Prasad, K.S. Narayana, M. Sai Shankar, Proceedings of National Conference in Current Trends in Physics, PP-6, Sep 11-12,2009
  28.  Fiber Bragg grating sensor system for multi-axis strain and temperature sensing D. Sengupta, P.Saidi Reddy, K.S. Narayana, M. Sai Shankar, R.L.N. Sai Prasad, S. Ravi Prasada Rao,  Recent Trends in Physics organized by Dept. of Physics, Pingle Govt. Degree& PG College for Women, Warangal  AP, pp.5, pp-60, Sep 11-12, 2008
  29. Simulation of Fiber Bragg Grating and Long Period Grating Characteristics and  their use for Simultaneous measurement and Discrimination of Strain and Temperature effects Dr. K. Srimannarayana, Dr. M. Sai Shankar, Dr. R. L. N. Sai Prasad, et. al, Paper Presented in the 32nd OSI Symposium on Contemporary Optics and Applications, held at The M S University, Vadodara, 1-3 March 2007 
  30. System Design Aspects of  Holographic Weapon Sight P. Rajesh Kumar, N Raghavender, N. Rama Murthy R. K. Srimannarayana, M. Sai Shankar, R. L. N. Sai Prasad , Paper Presented in the 32nd OSI Symposium on  Contemporary Optics And Applications, held at The M S. University, Vadodara,1-3 March 2007.
  31. Principles of Physics in Some Engineering Measurements R. L. N.Sai Prasad, J. Ramachender Rao, Paper Presented in National Seminar on Physical Science in EngineeringEducation, REC,Warangal, 9-11 July1999. 
  32. Liquid Surface Acoustcal Holography R. L. N.Sai Prasad, K. Srimannarayana, V. Venkateswara Rao, V. Vasudeva Rao  Paper Presented in WMU-SUM, NPL, New Delhi, March 1984.

 

PHDs Supervised

 

 

  1.  Studies on High and Low Temperature sensing using Fiber Bragg Grating Sensors - P Saidi Reddy
  2. Estimation of Crack Mouth Opening Displacement(CMOD) in Concrete Using Optical Fiber Sensors - K. Samrajyam  

 

Workshops/Conferences

 

Projects

 


 

Sl. No

 Name of the Project

Sponsoring

Agency

1

 Advanced Optical Transducer for Industrial Measurement.

AICTE

2

 Holocoupler for Optical Circuits

DST

3

 Radiation Effects On Electronic  Systems

DRDO

4

 Fiber Bragg Grating Sensor for  Engineering measurements

DIT

5

 Holographic Optical Element for Holographic Weapon Sight

BEL

6

 Microcontroller based Photoplethysmographic Sensor for Cardiac Function Studies

MHRD

7

 Advanced Fiber optic Sensor System for Multiparameter Sensing

MHRD

8

 High temperature measurement using Fiber Bragg Gratings

DeitY

9

 Development of FBG sensorsfor Fusion Technology Applications

BRFST

Awards and Honors

 

Additional Responsibility

 

  1. Programme Officer, NSS,1992-97
  2. Staff Adviser, Physics Association During 1996-2000.
  3. Warden Jan 2000-Jan 2002.
  4. Incharge, UG Lab 1996-2001.
  5. Incharge, Time-Tables,1996-Till Date.
  6. TEQIP-Phase I-Dept. Representative.
  7. Dept. Purchase Committee Member
  8. Staff Adviser, Photographic Club
  9. Incharge, Electronics Lab
  10. Treasurer, TWANITW-2007-08
  11. Dy Chief Warden-Feb 2011-Jul-12
  12. Chief Warden Aug-2012-June 2014
  13. Dean (P&D), Aug-2014 -  June 2016
  14. Head, Department of Physics, August 2016 - Till Date