slugANALYSIS OF OPTICAL SOLITON PROPAGATION IN BIREFRINGENT FIBERS
Journal Title: International Journal of Management, IT and Engineering - Year 2011, Vol 1, Issue 6
Abstract
Before the development of optical communication systems, two major forms of communication systems were employed. In the first of these, namely, electrical communication system, information is encoded as electrical pulses and transmitted through coaxial cable; the other system, i.e., microwave system, uses electromagnetic waves with frequencies in the range of 1 - 10GHz to transmit the signal .These two systems are limited either by bandwidth due to high frequency-dependent loss of coaxial cable of the electrical system, or bit rate due to the low carrier frequencies of the microwave system. Fortunately, these two obstacles could be overcome by using optical communication system, thanks to the invention of the laser in 1960 and the breakthrough technology of low-loss optical fibers in 1970. Specifically, the high frequencies (~100 THz) of the optical pulses increase enormously the bit-rate of the system and the fiber loss has been reduced to below 20 dB/km in a broad wavelength range around 1µm. While, for the advantage of low cost, electrical and microwave transmission technologies are still preferred for short distances and relatively low bandwidth applications, such as cable TV (Television), CCTV (Closed Circuit Television). Fiber-Optic technology is generally used in telecommunications for its inherently high data-carrying capacity and the exceptionally low loss of the optical fiber.
Authors and Affiliations
Ch. Spandana, D. ajay kumar and M. Srinivasa Rao
Keywords
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