1000BASE-ZX optical Ethernet specification

Overview

The 1000BASE-ZX PTMs can be used for GbE service over Single-Mode Fiber (SMF). The 1000BASE-ZX PTMs are OSP hardened for outside plant applications.

System specifications

The following are the 1000BASE-ZX system specifications:

• Optical Line Rate: 1.25 Gb/s (±100 ppm)

• Optical Line Coding: 8B/10B

• Fiber Type: 10 μm SMF

• Minimum Range: 2 to 80,000 meters

• Performance: Long-reach (80 km)

Transmitter specifications

The 1000BASE-ZX optical transmitter meets the specifications defined in IEEE802.3. The table below shows some of the 1000BASE-ZX optical transmitter specifications.

Table 10-43: 1000BASE-ZX transmit specifications

Description	1000BASE-ZX
Transmitter type	Longwave Laser
Signaling speed (range)	1.25 GBd (±100 ppm)
Wavelength (λ, range)	1500 to 1580 nm
Trise/Tfall (max; 20%−80% response time)	0.26 ns
Maximum Spectral Width (Δλ20)	+1.0 nm
Average launch power (max)	+5.0 dBm
Average launch power (min)	0 dBm
Average launch power of OFF transmitter (max)	−40.0 dBm
RIN (max)	−120.0 dB/Hz

Receiver specifications

The 1000BASE-ZX receiver meets the specifications defined in the table below.

Table 10-44: 1000BASE-ZX receive specifications

Description	1000BASE-ZX
Signaling speed (range)	1.25 GBd (±100 ppm)
Wavelength (range)	1500 to 1580 nm
Average receive power (max)	0 dBm
Receive sensitivity	−22.5 dBm
Return loss (min) 1	12 dB

Notes:

1. Refer to the IEEE802.3 standards for more information about return loss (min).

Link budgets

The worst-case power budget and link penalties for a 1000BASE-ZX channel are shown in the table below.

Table 10-45: 1000BASE-ZX link budgets and penalties

Parameter	1000BASE-ZX
Maximum Channel Insertion Loss	+21.0 dB
Minimum Channel Insertion Loss	+5.0 dB
Maximum Dispersion	1600 ps/nm
Optical Path Penalty	1.5 dB