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. (a) Using the following Figure 3, estimate the attenuation (in dB) of a fibre optic cable for the indicated wavelengths and distances in the Table below. (b) The horizontal axis in Figures 1 and 2 represents frequency, while the horizontal axis in Figure 3 represents wavelength. (i) Determine the relationship between wavelength and frequency. (ii) If the propagation speed of light in an optical fibre is 2 x 108 m/s, sketch another representation of Figure 3 using frequency in the horizontal axis. Loss (dB/km) 100 50 10 5 1 0.5 0.1 0.05 0.01 T 800 Distance 1 km 10 km 20 km 1000 1200 1400 Wavelength (nm) L dB at 800 nm 1600 dB at 1200 nm Figure 3 1800

. (a) Using the following Figure 3, estimate the attenuation (in dB) of a fibre optic cable for the indicated wavelengths and distances in the Table below. (b) The horizontal axis in Figures 1 and 2 represents frequency, while the horizontal axis in Figure 3 represents wavelength. (i) Determine the relationship between wavelength and frequency. (ii) If the propagation speed of light in an optical fibre is 2 x 108 m/s, sketch another representation of Figure 3 using frequency in the horizontal axis. Loss (dB/km) 100 50 10 5 1 0.5 0.1 0.05 0.01 T 800 Distance 1 km 10 km 20 km 1000 1200 1400 Wavelength (nm) L dB at 800 nm 1600 dB at 1200 nm Figure 3 1800

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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3. (a) Using the following Figure 3, estimate the attenuation (in dB) of a fibre optic cable for the indicated wavelengths and distances in the Table below.
(b) The horizontal axis in Figures 1 and 2 represents frequency, while the horizontal axis in Figure 3 represents wavelength.
(i) Determine the relationship between wavelength and frequency.
(ii) If the propagation speed of light in an optical fibre is 2 x 108 m/s, sketch another representation of Figure 3 using frequency in the horizontal axis. Loss (dB/km) 100 50 10 5 1 0.5 0.1 0.05 0.01 T 800 Distance 1 km 10 km 20 km 1000 1200 1400 Wavelength (nm) L dB at 800 nm 1600 dB at 1200 nm Figure 3 1800

 
3. (a) Using the following Figure 3, estimate the attenuation (in dB) of a fibre optic cable for the indicated wavelengths and distances in the Table below. (b) The horizontal axis in Figures 1 and 2 represents frequency, while the horizontal axis in Figure 3 represents wavelength. (i) Determine the relationship between wavelength and frequency. (ii) If the propagation speed of light in an optical fibre is 2 x 10³ m/s, sketch another representation of Figure 3 using frequency in the horizontal axis. Loss (dB/km) 100 50 10 5 1 0.5 0.1 0.05 0.01 11 800 Distance 1 km 10 km 20 km 1000 1400 Wavelength (nm) 1200 dB at 800 nm 1600 dB at 1200 nm Figure 3 1800
Transcribed Image Text:3. (a) Using the following Figure 3, estimate the attenuation (in dB) of a fibre optic cable for the indicated wavelengths and distances in the Table below. (b) The horizontal axis in Figures 1 and 2 represents frequency, while the horizontal axis in Figure 3 represents wavelength. (i) Determine the relationship between wavelength and frequency. (ii) If the propagation speed of light in an optical fibre is 2 x 10³ m/s, sketch another representation of Figure 3 using frequency in the horizontal axis. Loss (dB/km) 100 50 10 5 1 0.5 0.1 0.05 0.01 11 800 Distance 1 km 10 km 20 km 1000 1400 Wavelength (nm) 1200 dB at 800 nm 1600 dB at 1200 nm Figure 3 1800
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