Download Fiber Optic Communications: Fundamentals and Applications by Shiva Kumar, M. Jamal Deen PDF
By Shiva Kumar, M. Jamal Deen
Fiber-optic verbal exchange platforms have complicated dramatically during the last 4 many years, because the period of copper cables, leading to reasonably cheap and high-bandwidth transmission. Fiber optics is now the spine of the net and long-distance telecommunication. with out it we'd now not benefit from the advantages of high-speed web, or low-rate foreign mobile calls.
This ebook introduces the fundamental options of fiber-optic verbal exchange in a pedagogical means. the real mathematical effects are derived via first ideas instead of mentioning learn articles. furthermore, actual interpretations and real-world analogies are supplied to aid scholars seize the basic concepts.
Key Features:
- Lucid rationalization of key themes comparable to fibers, lasers, and photodetectors.
- Includes contemporary advancements akin to coherent conversation and electronic sign processing.
- Comprehensive remedy of fiber nonlinear transmission.
- Worked examples, workouts, and answers.
- Accompanying site with PowerPoint slides and numerical experiments in MATLAB.
Intended basically for senior undergraduates and graduates learning fiber-optic communications, the publication can also be appropriate as a qualified source for researchers operating within the box of fiber-optic communications.
Read Online or Download Fiber Optic Communications: Fundamentals and Applications PDF
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Additional info for Fiber Optic Communications: Fundamentals and Applications
Example text
112) = z (0) − z (L). 112) represents the rate of change of energy per unit area and therefore, z has the dimension of power per unit area or power density. For light waves, the power density is also known as the optical intensity. Eq. 112) states that the difference in the power entering the cross-section A and the power leaving the cross-section A is equal to the rate of change of energy in the volume V. The plane-wave solutions for Ex and Hy are given by Eqs. 114) z = 2 Ex0 ???? cos2 (????t − kz).
4. From ray-optics theory, it follows that total internal reflection occurs for any angle in the interval [????c , ????∕2]. This implies an infinite number of guided modes. However, from the wave-optics theory, it follows that not all the angles in the interval [????c , ????∕2] are permitted. Light guidance occurs only at discrete angles {????1 , ????2 , · · · } in the interval [????c , ????∕2], as shown in Fig. 6. Each discrete angle in Fig. 6 corresponds to a guided mode. Typically, a multi-mode fiber can support thousands of guided modes.
121) zav = | | 2????T ∫0 2???? since |Ẽ x |2 is a constant for the plane wave. Thus, we see that, in complex notation, the average power density is proportional to the absolute square of the field amplitude. 4 Two monochromatic waves are superposed to obtain Ẽ x = A1 exp [i(????1 t − k1 z)] + A2 exp [i(????2 t − k2 z)]. 122) Find the average power density of the combined wave. Solution: From Eq. 121), we have T 1 |Ẽ |2 dt 2????T ∫0 | x | { T 1 = exp [i(????1 − ????2 )t − i(k1 − k2 )z]dt T|A1 |2 + T|A2 |2 + A1 A⋆ 2 ∫ 2????T 0 } T ⋆ exp [−i(????1 − ????2 ) + i(k1 − k2 )z] dt.