iosr-JECE   Volume-12 ~ Issue-2 ~ March-April 2017

Abstract: This work investigated the optimum location of Erbium Doped Fiber Amplifier (EDFA) in an optical system based on analysis of BER analyzer metrics by simulation approach using Optisystem software. The simulation model will be studied based on many parameters as input power (dBm), gain of Amplifier (dBm), fiber cable length (km) and attenuation coefficient (dB/km), there are two different parameters will be analyzed at five different locations of EDFA which are Q-Factor and Bit Error Rate (BER) and also Eye Diagram, which Q-factor and BER are measurement parameters used to measure the quality of received signal at receiver.

Keywords: EDFA, Bit Error Rate, Optical Amplifier, Optisystem simulator, Optical System, Q-factor

[1] Fiber-Optics.info, Optical Amplifiers, http://www.fiber-optics.info/articles/optical_amplifiers.
[2] Warsha Balani and Manish Saxena, EDFA Gain Performance analysis at 2Gbits/sec in Optical Transmission System, International Journal of Multidisciplinary and Current Research, August 2013, ISSN: 2321-3124.
[3] Giridhar Kumar R, Iman Sadhu and Sangeetha N, Gain and Noise Figure Analysis of Erbium Doped Fiber Amplifier by Four Stage Enhancement and Analysis, International Journal of Scientific and Research Publications, Volume 4, April 2014, ISSN 2250-3153.

Abstract: In the optical transmission systems attenuation causes signal power to drop through an optical fiber link, so need to use amplifiers to increase signal power with low noise. Semiconductor Optical Amplifier (SOA) and Erbium-Doped Fiber Amplifier (EDFA) are two of the main types of optical amplifiers, and they were used in this simulation model to analyze their performance, with a data rate of 622 Mb/s (STM-4 level) and 170 km optical fiber length for each simulation model. This was simulated by using OptiSystem simulator, including the main parameters of the optical transmission system as input power (dBm), optical fiber cable length (km) and attenuation per length of optical fiber cable (dB/km), also there are three parameters will be considered which they are output power (dBm), Q-Factor and Bit Error Rate (BER) at receiver, and also Eye Diagram.

Keywords: EDFA, Optical Amplifier, Optisystem simulator, Optical Transmission System, SOA

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Abstract: The dielectric-metal-dielectric plasmonic waveguide structures find applications in integrated optics and fiber polarizers and sensors. Surface plasmon waves guided by thin metal film have been intensively studied over the last two decades. However, most studies have been confined to relatively low index dielectrics. With growing interest in silicon photonics and other semiconductors dielectric of relatively higher dielectric constant we carried out a detailed study of the modes supported by a metal filmbetween dielectrics of relatively higher dielectric constant. The study clearly shows that both modes.............

Keywords: Surface plasmon modes, dielectric-metal-dielectric waveguide, bound modes, leaky modes, sensors

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