Twenty Thousands Leagues inside the Optical Fiber TELL
Twenty Thousands Leagues inside the Optical Fiber
TELL ME … DO YOU EVEN?
RFC 1149: A Standard for the Transmission of IP Datagrams on Avian Carriers
Semaphore Fire beacons Smoke signals
Heliograph Transmitter
Heliograph Transmitter
Heliograph Receiver Transmitter
Photophone
Only straight line Lossy medium
LASER = Amazing
Monochromatic Coherent
Fiber Optic
Jacket: 400 µm Buffer: 250 µm Core: 8 µm Cladding: 125 µm
Total Internal Reflection Cladding n = 1. 44681 Core n= 1. 45205 Attenuation (at 1550 nm) ~ 0. 2 d. B/km 1% remaining power after 62 miles
3. 2 Tb/s 2 routes (north, south) 4 fiber pairs 40 channels of 10 Gb/s each http: //commons. wikimedia. org/wiki/File: Map_TAT-14. png by Alexrk 2 CC-BY-SA-3. 0
In One Second 3. 2 Tb/s 8 Blueray discs
Modulations Amplitude-shift Keying (ASK) Frequency-shift Keying (FSK) Phase-shift Keying (PSK)
MUX DEMUX Wavelength-Division Multiplexing Single fiber 100 GHz channel spacing ~ 1550 nm 40 channels
Optical Impairments Four-Wave Mixing Chromatic Dispersion Polarization Mode Dispersion Cross Phase Modulation Polarization Dependent Loss
New fiber type 255 Tb/s over 1 km 50 channels × 5. 1 Tb/s 200 Gb/s 31 Tb/s over 7, 200 km 155 channels × 200 Gb/s 100 Gb/s 7. 2 Tb/s over 6, 500 km 80 channels × 100 Gb/s 10 Gb/s TAT-14: 0. 4 Tb/s over 9, 600 km 40 channels × 10 Gb/s
“If I have seen further it is by standing on the shoulders of giants. ” Isaac Newton
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