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Twenty Thousands Leagues inside the Optical Fiber
Ariya Hidayat
October 13, 2015
Technology
0
260
Twenty Thousands Leagues inside the Optical Fiber
Presented at O'Reilly Velocity Conference 2015 (Santa Clara, New York)
Ariya Hidayat
October 13, 2015
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Transcript
Twenty Thousands Leagues inside the Optical Fiber
None
TELL ME … DO YOU EVEN?
None
RFC 1149: A Standard for the Transmission of IP Datagrams
on Avian Carriers
Semaphore Fire beacons Smoke signals
Heliograph Transmitter Receiver
Photophone
Only straight line Lossy medium
LASER = Amazing
Monochromatic Coherent
Fiber Optic
Jacket: 400 µm Buffer: 250 µm Cladding: 125 µm Core:
8 µm
Total Internal Reflection Cladding n = 1.44681 Core n =
1.45205 Attenuation (at 1550 nm) ~ 0.2 dB/km 1% remaining power after 62 miles
None
None
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 Alexrk2 CC-BY-SA-3.0
In One Second 3.2 Tb/s 8 Blueray discs
Modulations Frequency-shift Keying (FSK) Amplitude-shift Keying (ASK) Phase-shift Keying (PSK)
Wavelength-Division Multiplexing MUX Single fiber DEMUX 100 GHz channel spacing
~ 1550 nm 40 channels
Optical Impairments Chromatic Dispersion Polarization Mode Dispersion Cross Phase Modulation
Four-Wave Mixing Polarization Dependent Loss
10 Gb/s 100 Gb/s 200 Gb/s 31 Tb/s over 7,200
km 155 channels × 200 Gb/s TAT-14: 0.4 Tb/s over 9,600 km 40 channels × 10 Gb/s 7.2 Tb/s over 6,500 km 80 channels × 100 Gb/s New fiber type 255 Tb/s over 1 km 50 channels × 5.1 Tb/s
“If I have seen further it is by standing on
the shoulders of giants.” Isaac Newton