I have worked in the field of Fiber Optics, Optoelectronics and Photonics for more than a decade. My research on revealing the characteristics of electromagnetic wave propagation in novel waveguide structures and Bragg fibers are high impact making. Recently, we have started working on the photonic band gap (PBG) structures and optical waveguide biosensors. In these, we have already published some important results which are as follows.

1. Our work on modeling and simulation of asymmetric deformed cross-section waveguides led to new criteria for defining tolerance in waveguide components.
2. We developed a new simplified approach based on weak guidance approximation for calculating Bragg fiber characteristics, and showed good agreement with much more complicated conventional method. This would provide a fast and efficient basis for making new Bragg fiber designs.
3. For the first time we reported characteristics of guided modes in a Bragg waveguide filled with plasma in the cladding region. The analysis showed that by introducing thin plasma layers it is possible to control individual modes and to achieve single mode operation without high frequency limitation at the cost of marginal increase in loss due to absorption.
4. We investigated a new waveguide structure in which core-cladding interface is modulated with helical conducting winding. It was found that the dispersion characteristics of such waveguides show photonic band gaps (PBGs).
5. We have also started working for development of optical waveguide biosensors for detection and monitoring of microbial activities.

• Optoelectronics
• Photonics
• Fiber Optics
• Optical waveguide sensors and material sciences.

• Electromagnetic Theory
• Electronic Devices and Circuits
• Digital Communication
• Optics
• Optical Waveguide and Fibers
• Modern Physics
• Classical and Quantum Mechanics
• Engineering Physics etc.

• Young Scientist Project - Department of Science and Technology (DST), New Delhi (2007-2010).
• Life member of "Optical Society of India".
• Editorial and Reviewer Board member of "Journal of Electromagnetic Waves and Applications" (JEMWA), U.S.A.
• Reviewer of "Progress in Electromagnetic Research" (PIER), U.S.A.
• Reviewer of "Optical Engineering", U.S.A.

S. No.	Name of the Project	Duration	Source of Funding	Amount of Funding (Rs)
1.	Design and study of optical waveguide biosensors of recent interest oriented to technological applications.	2008- 2011	DST, New Delhi	7.6 lacs
2.	Detection of Biogenic Amines (BA) vapors based on quartz crystal microbalance (QCM) and fiber optic chemical sensors (FOCS) as indicator for food safety against bacterial degradation.	2009-2012	DRDO, New Delhi	14.1 lacs

List of Publications:

1. Microwave Opt. Technol. Lett., (U.S.A), Vol. 22, No.6, 1999, pp. 426-429.
2. Microwave Opt. Technol. Lett., (U.S.A), Vol. 22, No.2, 1999, pp.129-133.
3. Optik (Germany) Vol. 110, No.6, 1999, pp. 267-270.
4. Microwave Opt. Technol. Lett., (U.S.A) , Vol. 22, No.5, 1999, pp. 314-317.
5. Microwave Opt. Technol. Lett., (U.S.A) Vol. 19 , 1998 , pp. 152-158.
6. Photonics and Optoelectrinics, (U.S.A) Vol. 5, No.2, 1998 pp.73-88.
7. Photonics and Optoelectrinics, (U.S.A)Vol. 5, 1998, pp. 117-126.
8. Photonic and Optoelectronics (U.S.A),Vol. 5, 1998, pp.225-232.
9. Microwave Opt. Technol. Lett., (U.S.A) Vol. 21, No.2, 1999, pp.121-124.
10. Photonics & Optoelectronics, (U.S.A) Vol. 5,1998, pp. 233-240.
11. Optik, (Germany) Vol. 110, No.1, 1999, pp. 81-85.
12. Optik, (Germany), Vol. 110, 1999, pp.363-371.
13. Optik (Germany) Vol. 110, 1999, pp.397-399.
14. Microwave Opt. Technol. Lett., (U.S.A), Vol. 23, No.3,1999 pp.163-166.
15. Optik (Germany), Vol.110, 1999, pp.509-512.
16. Microwave Opt. Technol. Lett., (U.S.A), Vol. 23 , 1999 pp. 221-224.
17. Optik (Germany) Vol. 110, No. 11, 1999, pp. 505-509.
18. Optik (Germany) Vol.111, 2000, pp. 94-96.
19. Microwave Opt. Technol. Lett., (U.S.A), Vol.24, 2000 , pp 229-232.
20. Microwave Opt. Technol. Lett., (U.S.A) Vol. 24, No.3, 2000 , pp 210-211.
21. Optical FiberTechnology, (U.S.A) Vol. 6, 2000, pp.290-298.
22. Microwave Opt. Technol. Lett., (U.S.A) Vol. 28, 2001, pp 75-78.
23. Optik (Germeny), Vol.111, 2000, pp. 375-277.
24. Optik (Germeny),Vol. 111, 2000, pp. 471-474.
25. Optik (Germeny), Vol.111, 2000, pp.423-426.
26. Microwave Opt. Technol. Lett., (U.S.A) Vol.31 2001,pp.211-214.
27. Microwave Opt. Technol. Lett., (U.S.A) Vol 29, No.2, 2001 pp 136-139.
28. Optik (Germeny), Vol.112, 2001, pp.205-208.
29. Microwave Opt. Technol. Lett., (U.S.A) Vol.32, pp.211-216 2001.
30. Microwave Opt. Technol. Lett, (U.S.A) Vol. 37, 142-145, 2003.
31. Journal of Electromagnetic Waves and Applications (U.S.A), Vol. 17, 1025-1036, 2003.
32. Journal of Electromagnetic Waves and Application (U.S.A). Vol. 18, No. 4, pp. 455-468, 2004.
33. Optik (Germany), Vol. 115, No.6, pp.281-288, 2004.
34. Microwave Opt. Technol. Lett,(U.S.A)Vol.46, No.3, pp.271-275, 2005.
35. Journal of Electromagnetic waves and Applications (U.S.A) Vol.19, No.10, pp. 1307-1326, 2005.
36. Progress In Electromagnetic Research (U.S.A) Vol. 59, pp.231-249, 2006.
37. Journal of Electromagnetic waves and Applications (U.S.A) Vol. 20, No. 8, 1021-1035, 2006.
38. Progress In Electromagnetic Research (U.S.A) Vol. 64, pp. 191-204, 2006.
39. Progress In Electromagnetic Research (U.S.A) Vol. 75, pp. 51-62, 2007.
40. Microwave Opt. Technol. Lett, (U.S.A) Vol. 49, No. 11, pp. 2709-27013, 2007.
41. International Journal of Infrared and Millimeter Waves (U.S.A) Vol. 29, pp. 89-98, 2007.
42. Optik (Germeny) Vol. 119, pp. 29-33, 2008.
43. Progress In Electromagnetics Research, PIER (U.S.A) Vol. 87, 117-130, 2008.
44. Optik (Germeny) Vol. 120, 14-19, 2009.
45. Progress In Electromagnetics Research, PIER (U.S.A) Vol. 89, 167-181, 2009.
46. Progress In Electromagnetics Research M, PIERM (U.S.A) Vol. 6, 167-184, 2009.
47. Journal of Infrared, Millimeter, and Terahertz Waves (U.S.A), Volume 30, Issue 9, 1012-1019, 2009.
48. Optik (Germeny) 2009 In press. doi:10.1016/j.ijleo.2009.02.024
49. Optik (Germeny) 2010 In press.
50. Journal of Optics Research (USA), 2010. (In press).