DCF - IPQ

Report
ROADM specs
Alcatel-Lucent, Bell Labs Stuttgart
15.6.2011
1 | ROADM Spec | 15.6.2011
Copyright © 2011 Alcatel-Lucent All rights reserved.
Expected power levels at RAODM
Option 4: 12 SOA in parallel (1)
PSOA,out : +7 dBm
PSOA,in :
- 8.5 .. -3.9 dBm
gain: 10.9 - 15.5 dB
8.3 - 15.5 dB
-8.5 .. -1.3 dBm
P drop,out < + 5.5dBm
Pout =
+4.5 dBm
L = 2 ..20 km
DCF
module
-3 dB tap
Pin:
0.5 .. 4.1 dBm
<= 2dB
-3.5 .. 3.7 dBm
P add,in : - 6 .. -1.4 dBm
- 6 .. 1.2 dBm
Power level @ C - band
@ O – band
2 | ROADM Spec | 15.6.2011
-- Return loss at taps/switch: ~ -55 dB
-- PDL: ~ 0.5 dB
Copyright © 2011 Alcatel-Lucent All rights reserved.
Expected power levels at RAODM
Option 4: 12 SOA in parallel (2)
 Starting point for dimensioning:
- Maximum output power at SOA: 7 dBm (linear operation)
- Compensation of total trail (ROADM + fibre) loss by SOA
- Fibre link length between ROADMs: 2 .. 20 km
Fibre loss: 0.2 dB/km @ C-band
0.4 dB/km @ O–band
Implementation of DCF Module
 Resulting power levels at monitors
(gain=15.5 dB, Pin= - 8 .. 4.1 dBm, P add,in : - 6 .. 1.2 dBm, PSOA,out : +7 dBm):
- PMon1WB:
- 30 .. -17.9 dBm
- PMon2/WB: - 20 .. - 5.3 dBm
- Pspectr/WB: - 22 .. – 7.3 dBm
3 | ROADM Spec | 15.6.2011
Copyright © 2011 Alcatel-Lucent All rights reserved.
Expected power levels for GPON (option 4)
general case
PON
down link
Budget: 20 dB
PON
up link
Rx: >= - 22 dBm
Budget: 8.5 dB
ONT1
1:32
OLT
Rx: >= - 10.5 dBm
Tx:>= 1.5dBm
ONT2
>= 1 dBm
>= -8 dBm
>= -7 dBm
>= 0 dBm
>= -4 dBm
>= 0 dBm
drop
>= - 9.5 dBm
Tx: >= 0.5 dBm
drop
20 km
20 km
add
ONT3
>= -4 dBm
add
>= - 9.5 dBm
>= -1.5 dBm
>= 1.5 dBm
>= - 2.5 dBm>= -1.5 dBm
>= - 10.5 dBm
>= - 19.5 dBm
Expected power at monitors @gain: 14 .5 dB:
Pmon1:
Pmon2:
> - 26 dBm
> - 13.5 dBm
Pspectr:
> - 15.5 dBm
4 | ROADM Spec | 15.6.2011
Pmon1:
> - 28.5 dBm
Pmon2:
> - 25.5 dBm
Pspectr:
> - 27.5 dBm
Copyright © 2011 Alcatel-Lucent All rights reserved.
GPON Spec
OLT
ONT
Output power(av)
Tx, dBm
Sensitivity
Rx, dBm
1.5 … 5
0.5 … 5
- 8…- 28
- 8 .. - 27
Demonstrator I - test bed/preliminary specs (option 4)
GPON
PON
down link
PON
up link
GPON Spec
OLT
ONT
Output power(av)
Tx, dBm
Sensitivity
Rx, dBm
1.5 … 5
0.5 … 5
- 8…- 28
- 8 .. - 27
Total loss:
Down-link: < 13.5 dB
Up-link:
< 7 .5dB
OLT
Tx: >= 1.5 dBm Rx: >= 8 dBm< = -3 dB
< -12 /13 dB
OADM 1
Rx: >= - 12 dBm
Mini-ROADM
ONT1
1:8
DCF
module
l1
1 dBm
- 3.5 dBm
5 km
drop
5 km
ONT2
>= -13.5 dBm
l2
add
DCF
module
>= - 5 dBm
SOA performance: Pout <= 7dBm, gain: 14 .5 dB
Expected power at monitors:
5 | ROADM Spec | 15.6.2011
Pmon1:
Pmon2:
> -25.5 dBm
> - 16.5 dBm
Pmon1:
Pmon2:
> -30 dBm
> -23 dBm
Pspectr:
> - 18.5 dBm
Pspectr:
> - 25 dBm
Copyright © 2011 Alcatel-Lucent All rights reserved.
->= 0 dBm
->= -12.5 dBm
ONT3
Tx: >= 0.5 dBm
Demonstrator I - test bed/preliminary specs (option 4)
Business access: 10 Gbit/s Ethernet ptp data transmission
Total loss:
Down-link: < 5 dB
Up-link:
< 1 .5 dB
10 Gbit/s system spec
Tx output power (av.): 0 dBm ?
Rx sensitivity: > -28 dBm
Ethernet
tester
Rx
< -1.5 dBm
< = 2 dB
Tx
Rx
>= - 5 dBm
<= 8 dB
0 dBm
0 dBm
5 km
5 km
<= 2 dB
OADM 2
OADM 1
drop
DCF
module
l1
5 km
Mini-ROADM
< = 2 dB
< = 2 dB
5 km
>= - 8 dBm
l2
>= -2 dBm
DCF
module
Max: 2.5 dBm
Expected power at monitors:
DL: Pmon1:
Pmon2:
> -30 dBm
> - 21 dBm
Pspectr:
> - 23 dBm
6 | ROADM Spec | 15.6.2011
UL:
Pmon1:
<
4.5 dBm
Pmon2:
< - 12.5 dBm
Pspectr:
< - 14.5 dBm
Copyright © 2011 Alcatel-Lucent All rights reserved.
>= -5.5 dBm
Tx
add
Demonstrator I - test bed/preliminary specs (option 4)
Optical backhauling with CoMP - DWDM solution
X2 traffic
Bit Error rate
(2.488 Gbit/s)
TRx II
Spec (TRx box)
Spec (GPON power budget):
Pout,av: > -3.5 dBm
DL: < 28.5 dB
Pin,av : > -28.5 dBm
Rx2
l1
l2
UL: < 28.5 dB
Tx1
Rx3
Tx3
Pmon1:
Pmon2:
Pspectr:
Pmon2:
Pspectr:
Pmon2:
Pspectr:
< 12.5 dB
OADM 1
Splitter box 2
Tx2
Rx1
In: > - 16.5 dBm
(typ)
OLT
TRx I
l1, l3
S1
-25.5 dBm
-16.5 dBm
- 18.5 dBm
-21.5 dBm
- 23.5 dBm
- 19 dBm
- 21dBm
Out: 0 dBm
(typ)
5 km
< 2 dB
eNB
< 12 dB
drop
Mini-ROADM
add
DCF
l1
l2
DL-Tx: > 1.5 dBm
UL-Rx: - 9.5 dBm
> - 3.5 dBm
>
>
>
>
>
>
>
1:8 PON
splitter
5 km
l2
DL-Rx: > - 15 dBm
UL-Tx: > 0.5 dBm
> 0 dBm
> -15.5 dBm
Splitter box 1
DCF
l2
> - 6.5 dBm
> - 4 dBm
> - 13 dBm
< 12 dB
< 3 dB
7 | ROADM Spec | 15.6.2011
S1 traffic
Ethernet tester
Copyright © 2011 Alcatel-Lucent All rights reserved.
< 3dB
Demonstrator I - preliminary specs
Dynamic range requirements at power monitors (option 4)
Expected power level,
dBm @ demonstrator I
Required
dynamic range, dB
Pmon1
- 30 .. -17.9
< 13
Pmon2
- 26 .. - 5.3
< 21
Pspectr
- 28 .. -7.3
< 21
Considering
- GPON specs ( - 28.5 dB power budget + power level ranges at Tx)
- Demonstrator I specs
8 | ROADM Spec | 15.6.2011
Copyright © 2011 Alcatel-Lucent All rights reserved.
Dispersion compensating fibre (DCF) module
for broadband operation (l = 1260 nm .. 1625 nm)
DCF-Module specification:
•
Operation wavelength band: - 1260 nm .. 1625 nm
•
Insertion loss: <= 4.5 dB (@ S-/C-/L-band)
<= 1.5 dB (@ O-/E-band)
Path 1
WDM
coupler
SDCF
•
Residual dispersion: < 1 ps/nm/km
WDM
coupler
Path 2
Path 1:
Path 2:
- for l`s > 1460 nm (= cut-off frequency of standard DCF)
- Implementation of standard DCF:
- length: 2-3 km
- dispersion @ S-/C-/L-band: <= 1 ps/nm/km
- insertion loss: <= 3.5 dB (2.3/1 for coupling/fibre length)
- for l`s < 1460 nm
9 | ROADM Spec | 15.6.2011
Copyright © 2011 Alcatel-Lucent All rights reserved.
10 | ROADM Spec | 15.6.2011
Copyright © 2011 Alcatel-Lucent All rights reserved.

similar documents