Parameter Description - Huawei AR500 Series Hardware Description

Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
Encapsul
ation
Type
QSFP+

7.2.3 Parameter Description

Transmit optical power Output optical power of an optical module when it is working properly. When two
Receive optical power
Maximum receiver
sensitivity
Overload optical
power
Extinction ratio
Fiber mode
Issue 10 (2019-03-06)
Rate Standard
40GE 40Gbase-SR4 (IEEE
802.3ba)
40Gbase-LR4 (IEEE
802.3ba)
optical modules are connected, the transmit optical power of one end must be within
the range of receive optical power on the other end.
Average input optical power that the receiver of an optical module can receive within
a range of bit error rate (BER = 10
overload optical power and the lower limit is the maximum receiver sensitivity. When
two optical modules are connected, the receive optical power on one end determines
the range of transmit optical power on the other end.
Minimum average input optical power that the receiver of an optical module can
receive within a range of bit error rate (BER = 10
connected, the maximum receiver sensitivity on one end determines the minimum
value of transmit optical power on the other end.
Maximum average input optical power that the receiver of an optical module can
receive within a range of bit error rate (BER = 10
connected, the overload optical power on one end determines the maximum transmit
optical power on the other end.
Minimum ratio of the average optical power with signals transmitted against the
average optical power without signals transmitted in complete modulation mode. The
extinction ratio indicates the capability of an optical module to identify signal 0 and
signal 1. This parameter is a quality indicator for optical modules. Optical modules
with a large extinction ratio may not have good quality. Qualified optical modules
should have an extinction ratio complying with IEEE 802.3.
Mode of optical fibers defined based on core diameters and features of optical fibers.
Optical fibers are classified into single-mode and multimode fibers. Generally, multi-
mode fibers have large core diameters and severe dispersion, so they transmit optical
signals over short distances. Single-mode fibers have small dispersion and can
transmit optical signals over long distances.
Copyright © Huawei Technologies Co., Ltd.
7 Pluggable Modules for Interfaces
Description
Uses one Rx multimode fiber and
one Tx multimode fiber to transmit
data at 40 Gbit/s over a distance
within 400 m.
Uses one Rx single-mode fiber and
one Tx single-mode fiber to transmit
data at 40 Gbit/s over a distance
within 10 km.
-12
). The upper limit of this parameter is the
-12
). When two optical modules are
-12
). When two optical modules are
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