SIVAPRAKASAM S Professor

Profile Picture

  • Department of Physics
  • School of Physical, Chemical & Applied Sciences
  • siva@iitk.ac.in

Academic Activity

Academic Activity Picture1

Academic Activity Picture2

Educational Qualification (UG,PG & Higher Order)

S.No Degree Subject/Title of thesis University/Board Year of Passing
1 Ph.D Physics University of Hyderabad 1998
2 M. Sc Physics University of Mysore 1992
3 B. Sc Physics University of Madras 1990

Area of Specializaion

Laser dynamics, Semiconductor lasers, Chaos synchronization

Awards / Prizes Conferred

S.No Name / Title of the Award Type Name of the Agency conferred the Award Year of the Award Amount for Cash Award
1 Certificate of Merit for Teaching STATE Pondicherry University 2016 nil
2 Certificate of Merit for Teaching STATE Pondicherry University 2010 nil

Teaching Experience

S.No Designation Department/Centre Institution
1 Assistant Professor Physics Indian Institute of Technology
2 Reader Physics Pondicherry University
3 Associate Professor Physics Pondicherry University

Research Experience

S.No Designation Department/Centre Institution Area of Research
1 Post-Doctoral Fellow School of Electronic Engineering Bangor Universtiy, United Kingdom Laser Dynamics
2 Assistant Professor Physics Indian Institute of Technology Laser Dynamics
3 Reader Physics Pondicherry University Laser Dynamics
4 Associate Professor Physics Pondicherry University Laser Dynamics

Industry Experience

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Contribution towards Innovation

S.No Name of the Work/Contribution Specialization Remarks

Patent Details

S.No Title Status Patent Number Year of Award Type Commercialized Status

Papers Published in UGC Approved Journals

S.No Title Name of the Authors as per the order in Paper Journal Name Volume, Issue & Page Nos. Year Impact Factor
1 Investigation of the Effect of Intra-Cavity Propagation Delay in Secure Optical Communication Using Chaotic Semiconductor Lasers E.Jayaprasath, Zheng-Mao Wu , S. Sivaprakasam, Yu-Shuang Hou, Xi Tang, Xiao-Dong Lin, Tao Deng and Guang-Qiong Xia Photonics ( MDPI) Volume 6, issue 2, article no. 49, pages 1-14 2019 2.14
2 Observation of additional delayed-time in chaos synchronization of uni-directionally coupled VCSELs E.Jayaprasath, Zheng-Mao Wu, S. Sivaprakasam, and Guang-Qiong Xia Chaos( American Institute of Physics) Volume : 28, issue : 12, article no. 123103 2018 2.79
3 Dynamical regimes and intracavity propagation delay in external cavity semiconductor diode lasers Jayaprasath, E., Sivaprakasam, S Pramana - Journal of Physics Vol 89, issue 5, article no. 76 2017 0.5
4 Remote control of turn-on latency time in a semiconductor diode laser Jayaprasath, E., Sivaprakasam, S Optical and Quantum Electronics Vol. 47, issue -7, pp. 1579-1587 2015 1.0
5 Accumulation of intra-cavity propagation delay in synchronized cascaded chaotic semiconductor lasers Jayaprasath, E., Sivaprakasam, S IEEE Journal of Quantum Electronics vol. 49, issue : 12, art. no. 2285113 2013 2.0

Papers Published in Non UGC Approved Peer Reviewed Journals

S.No Title Name of the Authors as per the order in Paper Journal Name Volume, Issue & Page Nos. Year Impact Factor
1 PT symmetry in mutually coupled semiconductor lasers with a non zero tme delay Prachi, SVM. Satyanarayana and S. Sivaprakasam Physics Letters A Vol. 452, article no. 128449, Septermber 2022 2022 1.594
2 Effect of external cavity length on the coherence propertties in a multimode semiconductor laser Neethu K and S. Sivaprakasam Physical Review A Vol. 106, article no. 043509, October 2022 2022 2.971
3 Modulational instability and soliton generation to chiral Bose - Einstein condensates with zero - energy nonlinearity Ishfaq Ahmad Bhat, S. Sivaprakasam and Boris A Molamed Physical Review E Vol. 103, article no. 032203, March 2021 2021 2.61
4 Investigation of the Effect of Intra-Cavity Propagation Delay in Secure Optical Communication Using Chaotic Semiconductor Lasers E.Jayaprasath, Zheng-Mao Wu , S. Sivaprakasam, Yu-Shuang Hou, Xi Tang, Xiao-Dong Lin, Tao Deng and Guang-Qiong Xia Photonics ( MDPI) Volume 6, issue 2, article no. 49, pages 1-14 2019 2.140
5 Observation of additional delayed-time in chaos synchronization of uni-directionally coupled VCSELs E.Jayaprasath, Zheng-Mao Wu, S. Sivaprakasam, and Guang-Qiong Xia Chaos( American Institute of Physics) Volume : 28, issue : 12, article no. 123103 2018 2.79
6 Dynamical regimes and intracavity propagation delay in external cavity semiconductor diode lasers Jayaprasath, E., Sivaprakasam, S Pramana - Journal of Physics Vol 89, issue 5, article no. 76 2017 0.5
7 Remote control of turn-on latency time in a semiconductor diode laser Jayaprasath, E., Sivaprakasam, S Optical and Quantum Electronics Vol. 47, issue -7, pp. 1579-1587 2015 1.0 2015 1.0
8 Accumulation of intra-cavity propagation delay in synchronized cascaded chaotic semiconductor lasers Jayaprasath, E., Sivaprakasam, S IEEE Journal of Quantum Electronics vol. 49, issue : 12, art. no. 2285113 2013 2.0

Papers Published in Conference Proceedings

S.No Title Name of the Authors as per the order in Paper Details of Conference Publication Page Nos. Year
1 Dependence of PT symmetry of mutually coupled diode laser system on frequency detuning and coupling strength Prachi and S. Sivaprakasam 10-13, October 2022 Paper ID 1650 2022
2 Existence of PT symmetry and exceptional points for mutually coupled laser system with non-zero delay time : Role of frequency detuning and coupling c Prachi and S. Sivaprakasam accepted for publication, Dec 2022 Paper ID 94_2 2022
3 Controlled decoherence in a semiconductor diode laser Neethu, K, and S. Sivaprakasam DAE National Laser Symposium, NLS 29 Paper Id: 261 2021
4 Synchronization and inverse synchronization of self pulsating non-symmetric coupled diode laser system Prachi and S. Sivaprakasam DAE National Laser Symposium, NLS 29 Paper id : 252 2021
5 Co-existence of synchronization and anti-synchronization in GLS with secure communication application V. Ramiya Gowse, B. Palanivel and S. Sivaprakasam 2nd International conference on Advance in Dynamics, Vibration and Control. (ICADVC- 2018), held at NIT- Durgapur during June 6-8, 2018. 41-48 2018
6 Influence of intra-cavity propagagation delay in the dynamics of a diode laser Jayaprasath, E., Sivaprakasam, S American Institute of Physics, Conference Proceedings. ‘A conference on Light : OPTICS – 17’. , Jan 2017. NIT – Calicut, Jan 09-11, 2017 Vol. 1849, arti 2017
7 Dynamical Influence of Chaos on the Intra-Cavity Propagation Delay in Synchronized Chaotic Diode Lasers Jayaprasath, E., Sivaprakasam, S Recent Advances in Optical Sciences - II (RAOS 2016) held at School of Physics, University of Hyderabad, Hyderabad, India, during May 06-07, 2016 PAGE 38 2016
8 A regime of anticipation induced by intra-cavity propagation delay in synchronized chaotic diode lasers Jayaprasath, E., Sivaprakasam, S PHOTONICS.2016, IIT – Kanpur – during Dec 04-08, 2016 Tu5E.3 2016
9 Influence of bias current on intra-cavity propagation delay in chaotic semiconductor lasers Jayaprasath, E., Sivaprakasam, S International conference on Optics and Photonics (ICOP-2015, Golden Jubilee conference of OSI) held at University of Calcutta, Kolkata, India, during February 20-22, 2015 ICOP2015-P.101 2015
10 Effect of intra-cavity propagation delay in secure optical communication using semiconductor lasers Jayaprasath, E., Sivaprakasam, S in DAE-BRNS National Laser Symposium (NLS-24) held at RRCAT, Indore, India, during December 02-05, 2015 ID:1.1-7047 2015
11 Remote control of latency time in a semiconductor diode laser Sivaprakasam, S DAE – National Laser Symposium (NLS -22), Manipal Institute of Technology, Karnataka January 8-10, 2014 CP-01-01 2014
12 Propagation effects of a signal in multiple semiconductor diode lasers Jayaprasath, E., Sivaprakasam, S DAE – National Laser Symposium (NLS -22), Manipal Institute of Technology, Karnataka January 8-10, 2014 CP-01-02 2014
13 Comparison of intra-cavity propagation delay in synchronized chaotic and non-chaotic semiconductor lasers Jayaprasath, E., Sivaprakasam, S International conference on Optics and Optoelectronics (ICOL-2014, 38th Symposium of OSI) held at IRDE, Dehradun, India, during March 05-08, 2014 ID-LAA-06 2014
14 Effect of synchronization quality on intra-cavity propagation delay in chaotic semiconductor lasers Jayaprasath, E., Sivaprakasam, S DAE-BRNS National Laser Symposium (NLS-23) held at Sri Venkateswara University, Tirupati, India, during December 03-06, 2014 ID: 6044 2014
15 Message encoding and decoding in an array of chaotic semiconductor lasers Jayaprasath, E., Sivaprakasam, S International conference of Perspectives on Nonlinear Dynamics (PNLD-2013) held at University of Hyderabad, India, during July 15-18, 2013 83 2013

Books

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Chapters in Books

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Edited Books

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Ongoing Projects

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Ongoing Consultancy Works

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Completed Projects

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Completed Consultancy Works

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Career Guidance Offered to students

S.No Name of the Scheme No. of Students Competitive Examinations/ Career Counseling No. of Students Passed No. of Students Placed

List of capability enhancement such as Soft skill development, Remedial coaching, Language lab,
Bridge courses, Yoga, Meditation, Personal Counselling and Mentoring etc.,

S.No Name of the Programme/Scheme Date of Implementation No. of Students Enrolled Agencies Involved

Research Guidance - PG

S.No Year Degree No. of Students Awarded Department/Centre
1 2018 M.SC 1 Physics
2 2016 M.SC 1 Physics
3 2015 M.SC 2 Physics
4 2014 M.SC 1 Physics
5 2013 M.SC 4 Physics
6 2012 M.SC 4 Physics
7 2012 M.PHIL 1 Physics
8 2011 M.PHIL 1 Physics
9 2011 M.SC 4 Physics
10 2010 M.PHIL 1 Physics
11 2010 M.SC 4 Physics
12 2009 M.SC 2 Physics
13 2009 M.PHIL 2 Physics
14 2008 M.SC 2 Physics
15 2008 M.PHIL 1 Physics
16 2007 M.SC 2 Physics
17 2007 M.PHIL 1 Physics

Research Guidance - Ph.D

S.No Student Name Registration Date Registration No. Thesis Title Thesis Submitted Status Thesis Submitted Date Vivavoce Completed Status Date Awarded
1 Ms. Prachi 13-08-2018 1600122010 Study of Parity-Time symmetry in Mutually Coupled Semiconductor Diode Lasers YES 19-02-2024 YES 21-06-2024
2 V. Ramiya Gowse 04-01-2016 20161122001 (PEC) Stuides on Synchronization Characteristics of Generalised Lorenz System and Its Application to Semiconductor Laser( As a Co-Guide) YES 28-01-2020 YES 02-09-2020
3 Ishfaq Ahmad Bhat 05-09-2014 1400122001 Modulational Instability in Dilute Bose Einstein Condensates : Application to Spin Orbit Coupled Gases and Positronium Condensates. YES 26-04-2019 YES 06-03-2020
4 Tamil Thiruvalluavar 28-08-2013 1300122009 Stability and Nonlinear Excitations in Higher Order Bose - Einstein Condensates YES 20-06-2019 YES 29-11-2019
5 E. Jayaprasath 19-09-2011 nil Intra-Cavity Propagation Delay in Synchronized Chaotic Semiconductor Diode Lasers YES 30-12-2015 YES 01-09-2016
6 Ms. Neethu. K 19-08-2019 1900122010 Dynamics of Multimode Semiconductor Diode Laser with Optical Feedback YES 13-08-2024 NO

Research Guidance - Post Doctoral

S.No Scholar Name Designation Funding Agency Fellowship Title Year of Joining Year of Completion
1 Dr Vignesh Raja National Post Doctoral Fellow DST Exotic Light Dynamics in certain PT symmetric Crystal Structures 07-02-2022 2024

Financial assistance availed to attend conferences / workshops and to pay membership fee
of professional bodies during the year

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E-Lecture Details

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Content/Module Title Institution/Platform Year Weblink

Details of Online Education Conducted

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Invited Talks in Conference/Seminar/Workshop/Training Programme

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Conferences/Seminars Organized

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Workshop Organized

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Administrative Responsibilities in the Government and Quasi Government Agencies

S.No Name of the Position Agency/Organisation Duration Nature of Duties

Affiliation in Academic Bodies/Societies

S.No Name of the Body/Society Nature of Affiliation Year
1 Optical Society of America Member 2018
2 Indian Laser Association Life Member 2018

Participation & Extension Activities (Academic/Administraion)

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Participation & Extension Activities (Co-Curricular)

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Collaboration with Institution/Industry

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Institution / Industry		 Details of Collaborative Research/Teaching
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Faculty Development Programme Attended (Orientation, Refresher, other Short Term Course during the year)

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Details of Executive Development Prog/Management Development Prog. conducted

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Participation in IMPESS, IMPRINT, SPARC, STARS, LEAP Programme etc and DSF Funding Programme

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Enrolment under ARPIT Programme

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