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Currrent Issue: Volume 4, Number 1, 2016

Article

Advanced Test System for Comprehensive Characterization of Laser Seekers in the Presence of Countermeasures

1Scientist, DRDO, Room No. 204, Laser Science & Technology Centre, Metcalfe House, Civil Lines, Delhi-54, India

2Technical Officer, DRDO, Room No. 204, Laser Science & Technology Centre, Metcalfe House, Civil Lines, Delhi-54, India

3Engineering Graduate (Instrumentation & Control), PDM Engineering College, Bahadurgarh, India


Journal of Optoelectronics Engineering. 2016, 4(1), 5-10
doi: 10.12691/joe-4-1-2
Copyright © 2016 Science and Education Publishing

Cite this paper:
Varsha Agrawal, Vivek Goyal, Amit Dhyani. Advanced Test System for Comprehensive Characterization of Laser Seekers in the Presence of Countermeasures. Journal of Optoelectronics Engineering. 2016; 4(1):5-10. doi: 10.12691/joe-4-1-2.

Correspondence to: Varsha  Agrawal, Scientist, DRDO, Room No. 204, Laser Science & Technology Centre, Metcalfe House, Civil Lines, Delhi-54, India. Email: varshaaggarwal@lastec.drdo.in

Abstract

Precision guided munitions play a pivotal role in battlefield success by providing commanders with highly improved weapon accuracy. Laser guided bombs are widely exploited precision guided munitions in the contemporary battlefield scenario. These sophisticated weapons are of great tactical importance and also have huge price tags attached to them. Various countermeasures have evolved to deceive them from their intended target. This makes it important that their effectiveness is guaranteed 100 percent by validating operational parameters in realistic operational conditions including the effects of countermeasures designed to defeat their intended objective. This paper presents the design of an advance test system that can be used for comprehensive testing of laser seekers including its response to various types of decoying techniques. The approach is to use lasers having the same wavelength, pulse width and PRF as that of laser designators and countermeasure lasers simulating the same power densities as seen by the laser seekers. The hardware is configured around two semiconductor diode lasers having output wavelengths of 1064nm and PIC microcontroller based embedded system to drive these lasers. The laser seeker head was extensively tested using this advanced test system. The test results are presented in the paper.

Keywords

References

[1]  Ralph, J. F. and Edwards, K. L., “The Effect of Aircraft biases on the Delivery of an Enhanced Laser Guided Weapon”, ICAS Congress, 2002.
 
[2]  Sabatini, R., and Richardson, M.A., “Airborne Laser Systems Testing and Analysis” Book published by the NATO Research and Technology Organization (RTO) – Systems Concepts and Integration Panel (SCI). AGARDograph Series RTO-AG-160, Vol. 26. 2010.
 
[3]  Chambers II J. W., “Precision Guided Munitions”, The Oxford Companion to American Military History, 2000.
 
[4]  Lt Col Neuenswander D., “Joint Laser Interoperability: Tomorrow’s Answer to Precision engagement”, Air and Space Power Journal, June 28, 2001.
 
[5]  James L. Karney, “Countermeasure System for Laser Radiation”, US Patent No. US 3992628A.
 
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[6]  Fu Wei, “Jamming of Laser-Guided Weaponry”, National Air Intelligence Centre, NAIC-ID(RS)T-0590-96.
 
[7]  Maini, A. K. and Verma, A. L., “Pre-flight Functionality Check to Enhance Mission Efficacy of Precision Guided Munitions”, Defence Science Journal, Vol. 59 No. 5, pp 459-465, September 2009.
 
[8]  Maini, A. K., Varma, A.L. and Agrawal, V., “New Electro-optic Simulator Design Concepts for Serviceability Checks of Laser Seekers and Laser Warning Sensors”, Journal of Battlefield Technology, Vol. 13, No. 2, July 2010.
 
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Article

Hybrid Raman/Erbium-Doped Fiber Amplifiers for WDM Transmission Systems

1Department of Physics, Kamla Nehru Institute of Physical and Social Sciences, Sultanpur (UP)-228118, India


Journal of Optoelectronics Engineering. 2016, 4(1), 1-4
doi: 10.12691/joe-4-1-1
Copyright © 2016 Science and Education Publishing

Cite this paper:
Sunil P. Singh. Hybrid Raman/Erbium-Doped Fiber Amplifiers for WDM Transmission Systems. Journal of Optoelectronics Engineering. 2016; 4(1):1-4. doi: 10.12691/joe-4-1-1.

Correspondence to: Sunil  P. Singh, Department of Physics, Kamla Nehru Institute of Physical and Social Sciences, Sultanpur (UP)-228118, India. Email: s_psingh74@rediffmail.com

Abstract

As light pulses propagate along the optical fiber, their energy dissipates. Beyond a certain distance the number of photons in pulses becomes too small to be detected. The optical pulses in fibers are energized by utilizing optical fiber amplifiers. The rapid growth of the internet and data traffic in optical fiber communication networks has stimulated the study of wideband optical amplifiers. Widening the bandwidth of fiber amplifiers is the primary issue in enlarging the capacity of wavelength-division multiplexed (WDM) transmission systems. This may be achieved by hybrid Raman/Erbium-doped fiber amplifiers. In this paper hybrid Raman/Erbium-doped fiber amplifier is simulated and almost flat gain of 21 dB is obtained for 1530-1565 nm wavelength range.

Keywords

References

[1]  T.N. Nielson, “Raman Amplifiers in WDM Systems,” 12th LEOS Annual Meeting, vol. 2, pp. 471-472, 1999.
 
[2]  S. Kawai, H. Masuda, K. Suzuki, and K. Aida, “Wide-Bandwidth and Long-Distance WDM Transmission Using Highly Gain-Flattened Hybrid Amplifier,” IEEE Photon. Technol. Lett., vol. 11, no. 7, pp. 886-888, 1999.
 
[3]  W.Y. Oh, S.S. Lee, H. Lee, and W. Seo, “16-Channel C-Band Hybrid Fiber Amplifier Comprising an EDFA and a Single Diode Laser Pumped Dispersion Compensating Raman Amplifier,” European Conf. On Comm., Munich, Germany, 2000.
 
[4]  H. Suzuki, J. Kani, H. Masuda, N. Takachio, K. Iwatsuki, Y. Tada, and M. Sumida, “1-Tb/s (100×10Gb/s) Super-Dense WDM Transmission with 25-GHz Channel Spacing in the Zero-Dispersion Region Employing Distributed Raman Amplification Technology,” IEEE Photon. Technol. Lett., vol. 12, no. 7, pp. 903-905, 2000.
 
[5]  T.N. Nielsen, A.J. Stentz, K. Rottwitt, D.S. Vengsarkar, Z.J. Chen, P.B. Hansen, J.H. Park, K.S. Feder, S. Cabot, S. Stulz, D.W. Peckham, L. Hsu, C.K. Kan, A.F. Judy, S.Y. Park, L.E. Nelson, and L. Gruner-Nielson, “3.28-Tb/s Transmission over 3×100 km Nonzero-Dispersion Fiber Using Dual C- and L-Band Distributed Raman Amplification,” IEEE Photon. Technol. Lett., vol. 12, no. 8, pp. 1079-1081, 2000.
 
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[6]  A. Carena, V. Curri, and P. Poggiolini, “On the optimization of hybrid Raman/Erbium-doped fiber amplifiers,” IEEE Photon. Technol. Lett., Vol.13, No.11, pp.1170-1172, 2001.
 
[7]  H.-S. Seo, J. T. Ahn, B. J. Park, and W. J. Chung, “Wideband hybrid amplifier using Er-doped fiber and Raman medium,” ETRI Journal, Vol. 29, No. 6, pp. 779-784, 2007.
 
[8]  Y. Chen, R. Pavlik, C. Visone, F. Pan, E. Gonzales, A. Turukhin, L. Lunardi, D. Al-Salameh, and S. Lumish, “40nm broadband SOA-Raman hybrid amplifier,” Proc. OFC Conf., Anaheim, CA, Paper ThB7, 2002.
 
[9]  H. H. Lee, D. D. Seo, D. Lee, J. S. Han, H. S. Chung, H. J. Lee, and M. J. Chu, “Demonstration of 16 × 10 Gb/s WDM transmissions over 5 × 80 km using gain-clamped semiconductor optical amplifiers in combination with distributed Raman fiber amplifiers as inline amplifiers under dynamic add-drop situations,” IEEE Photon. Technol. Lett., Vol. 15, pp. 1621-1623, 2003.
 
[10]  P. P. Iannone, K. C. Reichmann, X. Zhou, and N. J. Frigo, “200 km CWDM transmission using a hybrid amplifier,” Proc. OFC Conf., Anaheim, CA, Paper OThG3, 2005.
 
[11]  K. C. Reichmann, P. P. Iannone, X. Zhou, N. J. Frigo, and B. R. Hemenway, “240 km CWDM transmission using cascaded SOA-Raman hybrid amplifiers with 70nm bandwidth,” IEEE Photon. Technol. Lett., Vol. 18, pp. 328 -330, 2006.
 
[12]  P. P. Iannone and K. C. Reichmann, “Hybrid SOA-Raman amplifiers for fiber-to-the-home and metro networks,” Proc. OFC Conf., Paper NTuC1, 2008.
 
[13]  G. P. Agrawal, “Fiber Optic Communication Systems” 3rd Ed. John Wiley, NY, 2002.
 
[14]  H. Afkhami et al. “Wideband Gain Flattened Hybrid Erbium-doped Fiber Amplifier/Fiber Raman Amplifier”, Journal of the Optical Society of Korea, Vol. 14, No. 4, pp. 342-350, 2010.
 
[15]  P. J. Winzer, M. Pfennigbauer, and R. J. Essiambre, “Coherent crosstalk in ultradense WDM system” J. Lightwave Technol., Vol. 23, No. 4, pp. 1734-1744, 2005.
 
[16]  J. B. Khurgin, Xu. Shuangmei, and M. Boroditsky, “Reducing adjacent channel interference in RZ WDM system via dispersion interleaving,” IEEE Photon. Technol. Lett., Vol. 16, No.3, pp. 915-917, 2004.
 
[17]  R. S. Kaler, “Optimization of hybrid Raman/erbium-doped fiber amplifier for multi terabits WDM system”, Optik-International J. for Light and Electron Optics, Vol.124, No.7, pp. 575-578, 2013.
 
Show Less References