Calculate the etendue and hence estimate the number of freely propagating modes for a fibre that...
Calculate the etendue and hence estimate the number of freely propagating modes for a fibre that has a core diameter of 45μm at a wavelength of 1350nm. The refractive indices of the core and cladding are 1.480 and 1.440, respectively.
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Calculate the etendue and hence estimate the number of freely
propagating modes for a fibre that...
A step index fibre has a numerical aperture of 0.16, a core refractive index of 1.45...
A step index fibre has a numerical aperture of 0.16, a core refractive index of 1.45 and a core diameter of 90 mm. Calculate: 1. The refractive index of the cladding. 2. The acceptance angle θm and the confinement angle θ 0 m. 3. The approximate number of modes with a wavelength λ = 0.9 µm that the fibre can carry.
Graded-index plastic optical fibre (GI POF) is expected to be used for high- speed local area...
Graded-index plastic optical fibre (GI POF) is expected to be used for high- speed local area networks (LANS) because of its large core which allows for low cost and easy installation. A particular GI POF has a core diameter of 200um, a maximum core index of 1.500 and a numerical aperture of 0.30. 2.c.i 2.c.ii What is the maximum acceptance angle for this fibre? [2 marks] What is the refractive index of the cladding material for this fibre? 12 marks/...
QUESTION 1 1.1 In any long-haul optical fibre communications channel, it is important to have a...
QUESTION 1 1.1 In any long-haul optical fibre communications channel, it is important to have a large Bandwidth-Length Product (Hz-km). Name 4 things that could be considered in order to increase the Bandwidth-Length Product of a specific length of optical fibre. (4) 1.2 An optical fibre has a core diameter of 9 um and a refractive index of 1.466. The cladding refractive index is 1.442. 1.2.1 Determine if the fibre will permit single mode transmission at a wavelength of 1320...
A step-index multimode glass fibre, with a core diameter of 50 um and cladding refractive index of 1.45, is designed to...
A step-index multimode glass fibre, with a core diameter of 50 um and cladding refractive index of 1.45, is designed to limit the intermodal dispersion to 10ns/km 9. Find its acceptance angle а. Calculate the maximum bit rate for transmission over a distance of 20 km b.
A step-index multimode glass fibre, with a core diameter of 50 um and cladding refractive index of 1.45, is designed to limit the intermodal dispersion to 10ns/km 9. Find its acceptance angle а....
Question 28 (1 point) The cladding and core refractive indices of a fiber are respectively n2...
Question 28 (1 point) The cladding and core refractive indices of a fiber are respectively n2 = 1.52 and n = 1.56, respectively. Estimate the number of reflections in 1m of fiber having a core diameter d = 50m 2309 3609 2 4618 None of the other answers
Attenuation in dB km-1 (e 01 0.5 005 0 I 1.2 Wavelength (um) 90 9 1 The graph above shows the attenuation vs. wavele...
Attenuation in dB km-1 (e 01 0.5 005 0 I 1.2 Wavelength (um) 90 9 1 The graph above shows the attenuation vs. wavelength characteristics for a typical silica based optical fibre. (3 marks) Describe the physical processes responsible for optical attenuation at short wavelengths, long wavelengths and the peaks at wavelengths of 1.2 and 1.4 um? (2 marks) What are the implications of the graph above for silica fibre long distance communications? b) A fibre has a core refractive...
Problem 1: Fibre optics (2 points) Figure 1: Sketches of the geometry of an optical fibre...
Problem 1: Fibre optics (2 points) Figure 1: Sketches of the geometry of an optical fibre A long cylinder of dielectric material can guide light via total internal reflection. This idea dates back to the 1870s and forms the basis of the modern fibre optics communication technology. As long as the diameter of these fibres is large compared to the wavelength of the infalling light, its wave nature is negligible and we can use Geometric Optics to study the propagation...
a step index fiber with large core diameter compared with the wavelength of the transmitted light...
a step index fiber with large core diameter compared with the wavelength of the transmitted light has an acceptance angle in air of 22 and a relative refractive index difference of 3%.Estimate the numerical aperture and the critical angle at the core-cladding interface for the fiber
need Answers for c & d only. Everthing else is good. need answers for d &...
need Answers for c & d only. Everthing else is good.
need answers for d & e only. Not c. Thank you
11:14 AM Wed Jun 19 71% Problem1: Fiber Optics different optical loss (attenuation) sources a) Provide six extrinsic sources) of an optical fiber system. b) Sketch and briefly explain the Total Internal Reflection (TIR) phenomenon. c) What is the difference between a step index fiber and a graded index fiber? (Hint: Consider the ray tracing of different modes...
6. An optical fiber has an acceptance angle of 10.95 degrees. What's the numerical aperture for...
6. An optical fiber has an acceptance angle of 10.95 degrees. What's the numerical aperture for this fiber? A. 0.16 B. 1.02 C. 0.27 D. 0.19 7. An optical fiber has a core refractive index of 1.495 and a cladding refractive index of 1.47. What's the acceptance angle for this fiber? A. 13.11° B. 0.272° C. 9.79° D. 15.80° 8. While traveling through a cable, a signal loses 18.7 percent of its original power. What's this loss expressed in dB?...
Graded-index plastic optical fibre (GI POF) is expected to be used for high- speed local area networks (LANS) because of its large core which allows for low cost and easy installation. A particular GI POF has a core diameter of 200um, a maximum core index of 1.500 and a numerical aperture of 0.30. 2.c.i 2.c.ii What is the maximum acceptance angle for this fibre? [2 marks] What is the refractive index of the cladding material for this fibre? 12 marks/...
QUESTION 1 1.1 In any long-haul optical fibre communications channel, it is important to have a large Bandwidth-Length Product (Hz-km). Name 4 things that could be considered in order to increase the Bandwidth-Length Product of a specific length of optical fibre. (4) 1.2 An optical fibre has a core diameter of 9 um and a refractive index of 1.466. The cladding refractive index is 1.442. 1.2.1 Determine if the fibre will permit single mode transmission at a wavelength of 1320...
A step-index multimode glass fibre, with a core diameter of 50 um and cladding refractive index of 1.45, is designed to limit the intermodal dispersion to 10ns/km 9. Find its acceptance angle а. Calculate the maximum bit rate for transmission over a distance of 20 km b.
A step-index multimode glass fibre, with a core diameter of 50 um and cladding refractive index of 1.45, is designed to limit the intermodal dispersion to 10ns/km 9. Find its acceptance angle а....
Question 28 (1 point) The cladding and core refractive indices of a fiber are respectively n2 = 1.52 and n = 1.56, respectively. Estimate the number of reflections in 1m of fiber having a core diameter d = 50m 2309 3609 2 4618 None of the other answers
Attenuation in dB km-1 (e 01 0.5 005 0 I 1.2 Wavelength (um) 90 9 1 The graph above shows the attenuation vs. wavelength characteristics for a typical silica based optical fibre. (3 marks) Describe the physical processes responsible for optical attenuation at short wavelengths, long wavelengths and the peaks at wavelengths of 1.2 and 1.4 um? (2 marks) What are the implications of the graph above for silica fibre long distance communications? b) A fibre has a core refractive...
Problem 1: Fibre optics (2 points) Figure 1: Sketches of the geometry of an optical fibre A long cylinder of dielectric material can guide light via total internal reflection. This idea dates back to the 1870s and forms the basis of the modern fibre optics communication technology. As long as the diameter of these fibres is large compared to the wavelength of the infalling light, its wave nature is negligible and we can use Geometric Optics to study the propagation...
need Answers for c & d only. Everthing else is good.
need answers for d & e only. Not c. Thank you
11:14 AM Wed Jun 19 71% Problem1: Fiber Optics different optical loss (attenuation) sources a) Provide six extrinsic sources) of an optical fiber system. b) Sketch and briefly explain the Total Internal Reflection (TIR) phenomenon. c) What is the difference between a step index fiber and a graded index fiber? (Hint: Consider the ray tracing of different modes...
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