2-20
Cisco ONS 15454 DWDM Engineering and Planning Guide, Release 7.x
July 2006
Chapter 2 Cards Specifications
2.2.3 Optical Add and Drop Cards
Table 2-8 32WSS Card Parameters and Performance
Parameter Condition Min Typical Max Unit
Channel grid
–0.5 dB bandwidth EXP RX => COM TX +/–115 pm
–0.5 dB bandwidth Add 1, 32 => COM TX +/–135
Insertion loss EXP RX => COM TX — — 11.3 dB
COM RX => EXP TX — — 1.5
Add 1, 32 => COM TX — — 7.6
COM RX => DROP TX 6 — 8.5
Adjacent crosstalk Add 1, 32 23 — — dB
Multipath interference EXP RX => COM TX 45 — —
Nonadjacent crosstalk Add 1, 32 30 — —
PDL EXP RX => COM TX — — 0.9 dB
COM RX => EXP TX — — 0.1
Add 1, 32 => COM TX — — 0.5
COM RX => DROP TX — — 0.1
In-band chromatic
dispersion
All paths –20 — +20 ps/nm
Group delay ripple All paths –10 — +10 ps
In-band PMD All paths — — 0.5 ps
Optical power/VOA
attenuation setting
resolution
— — — 0.1 dB
Optical power setting
accuracy
— –0.5 — + 0.5 dB
Optical power setting
precision
— –0.1 — + 0.1 dB
Optical power/VOA
attenuation settling time
— — — 200 ms
Optical switch state
settling time
———5ms
———5
VOA dynamic range EXP RX => COM TX 20 — — dB
Add 1, 32 => COM TX 25 — —
Channel shutoff
attenuation (AVS)
EXP RX => COM TX 40 — — dB
Add 1, 32 => COM TX — —
EXP RX => COM TX 40 — —
Add 1, 32 => COM TX — —
Optical port isolation EXP RX => COM TX 32 — — dB
Add 1, 32 => COM TX 42 45 —
