Optical Fiber Communication Mynbaev Pdf Download
Click Here ->>->>->> https://tlniurl.com/2taNlP
The use of optical fiber communication is making tremendous progress in fields such as long-haul high-rate transmission, satellite communication, and wireless communication. The demand for high-rate transmission is pushing the limits of the present-day optical fiber communication system. As light travels in the fiber, it suffers from attenuation, dispersion, and nonlinear effects. In addition, the emerging demand for high-speed communication has also resulted in shrinking pulse widths. For example, the use of a 1.5-µm-diameter-core fiber with a 1.55-µm zero-dispersion wavelength to transmit a 1-ps-duration 1.55-µm pulse, could lead to a pulse broadening of 1.9 ns as it propagates over 10 km of fiber13. The nonlinear effects present in the fiber further degrade the transmitted pulse widths. The advent of mode-locked pump-laser sources has allowed to combat these problems by offering a versatile way of broadband signal generation. Besides, the use of optical soliton pulses in mode-locked lasers reduces the signal broadening and dispersion effects. However, the soliton pulses are not suitable for communication systems since they are not directly compatible with optical fiber communication systems. This motivates researchers to develop techniques for pulse broadening and dispersion compensation using fiber components to ensure the compatibility of soliton pulses with standard optical fiber system. In this chapter, we will discuss the various linear and nonlinear propagation effects in optical fibers and their impact on optical fiber communication systems. We will then describe the basic concepts of the fiber components used for compensating dispersion and pulse broadening effects.
This thesis presents the development of wavelength-selective optical fiber systems for the capture of ultrashort pulses from femtosecond lasers. These devices are used for the characterization of ultrashort pulses through the identification and control of spectral properties. We fabricated these devices with the use of nonlinear photonic crystal fibers and studied the processes involved. We also demonstrate an approach to ultrashort pulse characterization using a simple and fully compatible fiber-based system. A frequency-resolved optical gating (FROG) technique is used for the measurement of phase and amplitude of ultrashort pulses. The proposed approach offers the possibility of making a measurement of 300-nm-wide supercontinuum pulses, which is not possible with conventional FROG approaches.
A significant advance in nanophotonics would arise if the complexity of the system could be significantly reduced, while still being capable of providing a high resolution and effective measurement. Here, we report on a nanowire based FROG scheme that is capable of measuring broadband pulses in the spatial domain and also detecting the spatial intensity distribution of the pulses with high spatial and temporal resolutions. A ZnO nanowire with a diameter of 200-nm, length of 6-m and density of 1.5 827ec27edc