An optical fiber ('silica-glass') has a 'core' core with diameter 2a = 4µm and index of refraction n1 = 1.468 and a cladding shell with n2 = 1.447. (a) Calculate the numerical NA aperture of the optical fiber and the 2αmax air acceptance angle. (b) Using the data in the table below, calculate the number of modes for each length waveform: 870, 1312, 1550nm. (c) The optical power incident on the fiber by a diode laser, which operates at λ = 1312nm, is approximately 5mW. A photodetector at the fiber output requires minimal power of 5nW to do signal detection. What is the maximum fiber length that can be used without having to insert a signal repeater/regenerator into the system?
An optical fiber ('silica-glass') has a 'core' core with diameter 2a = 4µm and index of refraction n1 = 1.468 and a cladding shell with n2 = 1.447. (a) Calculate the numerical NA aperture of the optical fiber and the 2αmax air acceptance angle. (b) Using the data in the table below, calculate the number of modes for each length waveform: 870, 1312, 1550nm. (c) The optical power incident on the fiber by a diode laser, which operates at λ = 1312nm, is approximately 5mW. A photodetector at the fiber output requires minimal power of 5nW to do signal detection. What is the maximum fiber length that can be used without having to insert a signal repeater/regenerator into the system?
Related questions
Question
An optical fiber ('silica-glass') has a 'core' core with diameter 2a = 4µm and index of refraction n1 = 1.468 and a cladding shell with n2 = 1.447.
(a) Calculate the numerical NA aperture of the optical fiber and the 2αmax air acceptance angle.
(b) Using the data in the table below, calculate the number of modes for each length waveform: 870, 1312, 1550nm.
(c) The optical power incident on the fiber by a diode laser, which operates at λ = 1312nm, is approximately 5mW. A photodetector at the fiber output requires minimal power of 5nW to do signal detection. What is the maximum fiber length that can be used without having to insert a signal repeater/regenerator into the system?
Transcribed Image Text:d, (um)
Attenuation (dB/km)
Dispersion (ps/km-nm)
0.87
1.5
0.3
- 80
1.312
1.55
0.16
+17
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps
