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Cisco ONS 15454 DWDM Engineering and Planning Guide, Release 7.x
July 2006
Chapter2 Cards Specifications
2.2.3 Optical Add and Drop Cards
When output ports are connected to the client equipment, an external bulk attenuator might be required
to match the receive (Rx) window of the interface.Table 2-11 defines the internal optical parameters.
2.2.3.5 32MUX-O Card
Table2-12 defines the optical parameters for the 32MUX-O card.
Table2-11 32DMX-L Card Optical Parameters
Parameter Condition Min Typical Max Unit
–1 dB bandwidth COM RX => TX 1, 32
(OUT) +/–100 — — pm
–3 dB bandwidth +/–200 — —
Insertion loss COM RX => TX 1, 32 — — 5.8 dB
Adjacent crosstalk COM RX => TX 1, 32 25 — — dB
Nonadjacent crosstalk 34 — —
Total crosstalk 20 — —
PDL COM RX => TX 1, 32 — — 0.5 dB
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
VOA attenuation
setting resolution — — — 0.1 dB
VOA attenuation
setting accuracy Attenuation range
0 – 10 dB – 0.7 — + 0.7 dB
VOA attenuation
setting precision Attenuation range
0 – 10 dB –0.1 — + 0.1 dB
Power monitoring
indication response
time internal cycle
All PDs (both real and
virtual) — — 20 ms
Optical power/VOA
attenuation settling
time
— — — 200 ms
VOA shutoff
attenuation (AVS) COM RX => TX 1, 32 40 — — dB
Directivity — 40 — — dB
Return loss — 40 — — dB
Maximum optical
input power — 300 — — mW
Maximum AWG
startup time — — — 10 min.