Unrepeatered Systems: State of the Art State of the Art Hans - - PowerPoint PPT Presentation

▶
unrepeatered systems state of the art state of the art
SMART_READER_LITE
LIVE PREVIEW

Unrepeatered Systems: State of the Art State of the Art Hans - - PowerPoint PPT Presentation

Apr 23, 2023 41 likes •216 views

conference & convention enabling the next generation of networks & services Unrepeatered Systems: State of the Art State of the Art Hans BISSESSUR Alcatel-Lucent conference & convention enabling the next generation of networks

slide-1
SLIDE 1 enabling the next generation of networks & services

conference & convention

Unrepeatered Systems: State of the Art State of the Art

Hans BISSESSUR

Alcatel-Lucent

slide-2
SLIDE 2 enabling the next generation of networks & services

conference & convention

Presenter Profile

  • H. Bissessur joined Alcatel-Lucent in 1989

and investigated components such as low-linewidth DFB lasers, multiplexers,… In 1999, he focussed on terrestrial transmission systems, more especially on modulation formats. In 2002, he moved to

Place picture here

modulation formats. In 2002, he moved to the development group to work on 40Gb/s terrestrial transmission. Since 2007, he leads the group of unrepeatered submarine systems. Hans BISSESSUR UR System Design Group Leader Email: hans.bissessur@alcatel-lucent.com Tel: (+33) 1 3077 7357

slide-3
SLIDE 3 enabling the next generation of networks & services

conference & convention

Unrepeatered systems

No power feeding

No (electrically) active components in the cable All pumps + signals are provided from the shore

slide-4
SLIDE 4 enabling the next generation of networks & services

conference & convention

UR configurations

  • Complexity increases with distance (loss)
slide-5
SLIDE 5 enabling the next generation of networks & services

conference & convention

Unrepeatered systems

Raman/ROPA technology has been deployed all over

the world; no operational problems (even at 6000 m) Unavailability criterion of 5 min/year can be met High order Raman deployed over various fibre types

Name CD (ps/nm/km) Aeff (µ µ µ µm2) For UR

G.652 NDSF 17 80 + G.653 DSF 50

  • - (FWM, XPM)

G.654 PSCF 18.5 75 + G.654 EPSCF 20.5 110 ++ (Aeff) G.655 NZDSF 4 to 6 50-70

  • (XPM)

High order Raman deployed over various fibre types

slide-6
SLIDE 6 enabling the next generation of networks & services

conference & convention

Typical distances

  • !"#

$% &'

  • (&

%)

*+#,-.

  • &

( ) /

slide-7
SLIDE 7 enabling the next generation of networks & services

conference & convention

Laboratory experiments

ROPA Tx λ λ λ λ1 Tx λ λ λ λ2

Mux

Filter Rx

Premium configuration for max distance Close to the FEC limit (represents EOL situation)

Pure Silica Core Fibre Tx λ λ λ λ3 Tx λ λ λ λ4

Mu

Raman source 1276 nm Rx Raman source 1276 nm

slide-8
SLIDE 8 enabling the next generation of networks & services

conference & convention

3rd order Raman pumping

20 30 40 1390 nm 1480 nm

,1. ,1. ,1.

&2/ ($ )'

Energy transfer from 1275 to 1390 and 1480 nm

  • 20
  • 10

10 20 40 60 80 Distance from receiver (km) P (dBm) 1275 nm 1390 nm

& ( ) / % 34#,. & ( ) / % 34#,. & ( ) / % 34#,.

slide-9
SLIDE 9 enabling the next generation of networks & services

conference & convention

Achievements

Capacity Length (km) Loss (dB)

4x 10G NRZ 525 87.5 4x 10G RZ-DPSK 575 93.2 4x 10G RZ-DPSK 575 93.2 1x 10G RZ-DPSK 601 97.3 4x 40G DPSK 485 80.9 4x 40G AP RZ-DPSK 505 83.7 26x 100G PD-QPSK 401 66.9

References in the proceedings

slide-10
SLIDE 10 enabling the next generation of networks & services

conference & convention

Ultimate reach

9 9.5 10 Q2 factor (dB) 6.5 6.75 7 SNR (dB/0.1nm)

4 x 10 Gb/s over 574 km, applying:

the RZ-DPSK format ultra low-loss fibre 3rd order technology

8 8.5 1560 1561 1562 1563 Wavelength (nm) Q 6 6.25 OSN FEC limit

slide-11
SLIDE 11 enabling the next generation of networks & services

conference & convention

High efficiency (2 b/s/Hz)

9 10 11 2 Factor (dB) 14 16 18 NR (dB/0.1nm)

26 x 100 Gb/s demonstrated over 401 km 100 Gb/s PDM-QPSK format + coherent receiver 8 Tb/s (80 x 100 Gb/s) achievable (over shorter distance)

FEC limit 7 8 1550 1555 1560 1565 Wavelength (nm) Q2 10 12 OSN

slide-12
SLIDE 12 enabling the next generation of networks & services

conference & convention

Dense WDM (0.4 b/s/Hz)

24 x 10 Gb/s

Tx λ λ λ λ1

Mux

Filter

. . .

Tx λ λ λ λ2 Rx

Line without ROPA Compare different configurations at 0.4 b/s/Hz

1551 1552 1553 1554 1555 1556 1557 1558

Pure Silica Core Fibre

Mu

. .

Tx λ λ λ λn-1 Tx λ λ λ λn Rx

1551 1552 1553 1554 1555 1556 1557 1558

6 x 40 Gb/s

slide-13
SLIDE 13 enabling the next generation of networks & services

conference & convention

Dense WDM (0.4 b/s/Hz)

11.5 12.0 12.5 13.0 ctor (dB) 40Gb/s NRZ-DPSK, 295 km

40 Gb/s NRZ-DPSK (∆f=100 GHz) performs better

than 10 Gb/s NRZ (∆f=25 GHz) !

10.0 10.5 11.0 1552 1553 1554 1555 1556 1557 Wavelength (nm) Q2 facto 10Gb/s NRZ, 280 km

slide-14
SLIDE 14 enabling the next generation of networks & services

conference & convention

Upgrade of 10G system

Tx λ λ λ λ1 Tx λ λ λ λ2 ROPA Filter Rx

Mux

Tx λ λ λ λ3 Tx λ λ λ λ4 Tx λ λ λ λ5 Tx λ λ λ λ6

  • 45
  • 40
  • 35
  • 30
  • 45
  • 40
  • 35
  • 30
  • Starting with channels at 10 Gb/s
  • How do we upgrade to 40 Gb/s ?
  • Here margin is equalized for 10 and 40G channels
  • Power of 40 G channel is 2.5 dB higher than 10G channels

Raman source 1276 nm Raman source 1276 nm Tx λ λ λ λ6 Tx λ λ λ λ7

  • 55
  • 50

1556 1557 1558 1559 1560 Wavelength (nm)

  • 55
  • 50

1556 1557 1558 1559 1560 Wavelength (nm)

slide-15
SLIDE 15 enabling the next generation of networks & services

conference & convention

Upgrade of 10G system

1.E-06 1.E-05 ER

  • nly 10G channels

1.E-06 1.E-05 ER

  • 43
  • 38
  • 33
  • 28
  • 43
  • 38
  • 33
  • 28
  • 43
  • 38
  • 33
  • 28

1.E-07 1.E-06 1.E-05 ER ch #24: 10G replaced by 40G 1.E-07 1.E-06 1.E-05 ER 40G alone 1.E-09 1.E-08 1.E-07 1556.5 1557 1557.5 1558 1558.5 1559 1559.5 1560 Wavelength (nm) BER 1.E-09 1.E-08 1.E-07 1556.5 1557 1557.5 1558 1558.5 1559 1559.5 1560 Wavelength (nm) BER

  • nly 10G channels,

2.5 dB more power on ch #24

  • 53
  • 48
1556 1557 1558 1559 1560 Wavelength (nm)
  • 53
  • 48
1556 1557 1558 1559 1560 Wavelength (nm)
  • 53
  • 48
1556 1557 1558 1559 1560 Wavelength (nm)

1.E-09 1.E-08 1.E-07 1556.5 1557 1557.5 1558 1558.5 1559 1559.5 1560 Wavelength (nm) BER 1.E-09 1.E-08 1.E-07 1556.5 1557 1557.5 1558 1558.5 1559 1559.5 1560 Wavelength (nm) BER

  • 10 Gb/s channels do not penalise 40G channel
  • 40 Gb/s channel does not penalise 10G channels
slide-16
SLIDE 16 enabling the next generation of networks & services

conference & convention

Summary

UR systems meet submarine availability requirements

No active components in the cable => simple Today: more than 1 Tb/s (100 x 10 Gb/s) Capacity increase : Capacity increase :

3 Tb/s (40 Gb/s) or 8 Tb/s (100 Gb/s) Better reach with higher bit-rate

Performance assessed in the laboratory Improvements:

Fibre with reduced attenuation, larger effective area Improved FEC capability (transponder) Pumping scheme ?

slide-17
SLIDE 17

2010

enabling the next generation of networks & services

conference & convention

Pacifico Convention Plaza Yokohama & InterContinental The Grand Yokohama 11 ~ 14 May 2010 www.suboptic.org The 7th International Conference & Convention

  • n Undersea Telecommunications