Juniper Networks M120 Network Router User Manual


 
Table 20: Optical Interface Support for 10-Gigabit Ethernet PICs with XENPAK-OTNs (continued)
Transmitter type: Electro-absorption Modulated Laser (EML)
Modulation format: Non-retum-to-zero (NRZ)
Channel-plan wavelength range: 1551.72 through 1542.94 nm
Channel-plan frequency range: 193.2 through 194.3 THz
Channel spacing: 100 GHz
Channel tunability: 2 channels
Output power (on): 0 to + 3 dBm
Output power (off): 40 dBm
Output power stability: ±0.6 dB
Wavelength accuracy: ±100 pm
Tuning time: Warm tune 10 seconds; Cold start 40 seconds
Extinction ratio: 9 dB
Side-mode suppression ratio: 30 dB
Jitter generation compliance: GR-253/G.8251
Optical transmitter
Receiver type: Avalanche photodiode (APD)
Jitter tolerance compliance: GR-53/G.8251/802.3ae (LAN PHY)
Rx DTV setting: Auto
Rx wavelength range: 1527 to 1567 nm
Overload: 5 dBm
Damage input power: +5 dBm
Optical return loss: 27 dB
Optical receiver
Optical ApplicationsPower-Limited Receiver:
Sensitivity: 28 dBm (>33dB/0.1 nm OSNR, 0 ps/nm CD, 10
15
post-FEC BER)
Chromatic dispersion (CD) power penalty: 3 dB (typical penalty at +1600 ps/nm and
700 ps/nm CD)
Optical ApplicationsNoise-Limited Receiver:
Required OSNR: 16 dB/0.1 nm (8 to 20 dBm Rx input power, 0 ps/nm CD, 10
15
post-FEC BER)
CD OSNR penalty: 4 dB (typical penalty at +1500 ps/nm and 700 ps/nm CD with Rx
input power from8 to 20 dBm). For more detailed information, see
Table 21 on page 76.
Optical performance
Table 21: XENPAK-OTN Optical Signal-to-Noise Ratio (OSNR) Performance
CD Tolerance
(ps/nm)
Input-Power
Range
(dBm)
Post-FEC
BER
Pre-FEC
BER
FEC TypeOSNR (dB/0.5
nm)
OSNR (dB/0.1
nm)
05 to 2810
15
10
5
GFEC2633
700 to +16005 to 2610
15
10
5
GFEC2633
08 to 2010
15
10
5
GFEC916
76 10-Gigabit Ethernet PIC with XENPAK
M120 Internet Router PIC Guide