Huawei SE2900 - Page 97

HUAWEI SE2900 Session Border Controller
Hardware Description
2 Other Accessories
Issue 01 (2016-01-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
93
Figure 2-5 Optical module structure
1. Dust-proof cap
2. Transmit port
3. Spring
4. Label
5. Connector
6. Shell
7. Receive port
8. Handle
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Optical modules of the same encapsulation type may differ in the transmission rate,
transmission distance, and operating wavelength.

The transmission rate can be 1.25 Gbit/s, 10.3125 Gbit/s, or 41.25 Gbit/s.

The operating wavelength can be 850 nm, 1310 nm, or 1550 nm.

The transmission distance can be 550 m, 15 km, 40 km, 80 km, or 120 km.
The transmission distance of an optical module depends on the operating wavelength. Table
2-3 lists the mapping between the operating wavelength and the transmission distance.
Table 2-3 Mapping between the operating wavelength and the transmission distance
Operating Wavelength
Transmission Distance
850 nm
≤ 500 m
1310 nm
≤ 40 km
1550 nm
> 40 km or even to 120 km without any
relay
The label on an optical module specifies its transmission rate, operating wavelength,
transmission distance, transmission mode, and encapsulation type. Figure 2-6 shows the label
on an optical module.