Modulation Method of Laser for Underwater Communication

  • J. P. Singhal Instruments Research and Development Establishment, Dehra Dun
  • D. K. Srivastava Instruments Research and Development Establishment, Dehra Dun
DOI: https://doi.org/10.14429/dsj.34.6056
Keywords: Blue green lasers, Laser applications, Sonar technology, Underwater communication system, Pulse interval modulation

Abstract

Due to very high absorption of light in the water it is necessary to use high energy pulsed bluegreen lasers for underwater communication systems. However,these lasers do not have high repetition rates, sufficient enough to support high data rate signals. The pulse interval modulation method is one of the prospective methods of sending large bandwidth data using low frequency (500 to1000 pulses per second) pulsed laser. This method appears to be more promising for underwater communication system with likely development of fast PIM coder/decoder.

Author Biographies

J. P. Singhal, Instruments Research and Development Establishment, Dehra Dun
Instruments Research and Development Establishment, Dehra Dun-248008
D. K. Srivastava, Instruments Research and Development Establishment, Dehra Dun
Instruments Research and Development Establishment, Dehra Dun-248008
Published
2014-01-27
How to Cite
Singhal, J., & Srivastava, D. (2014). Modulation Method of Laser for Underwater Communication. Defence Science Journal, 34(1), 79-84. https://doi.org/10.14429/dsj.34.6056
Issue
Vol 34 No 1: Ocean Optics
Section
Special Issue Papers
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