H3C Technologies H3C S12500 Series Switches - Manual (Page 8)

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Transceiver module type Connector type
100-Gigabit CXP AOC N/A
NOTE:
•
The available transceiver modules vary by device models and are subject to change over time. For the
most up-to-date list of transceiver modules, contact your H3C sales representative or technical support
engineer.
• For information about the transceiver modules available for each device model, see the installation
guides.
Fiber transceiver modules
Fiber transceiver modules transmit signals over optical fibers. Optical transmission features low loss and
is fit for long distance transmission.
H3C devices support fiber transceiver module models of different specifications. You can choose fiber
transceiver modules as needed for data transmission over optical fibers.
The fiber transceiver modules include optical transmitters, optical receivers, transceivers, and
transponders.
H3C devices support transceivers. Transceivers are mainly used for optical-to-electrical and
electrical-to-optical conversions and provide the following functions: optical power control, modulation
transmission, signal probe, IV conversion, and limiting amplifier and decision regeneration. In addition,
transceivers provide some other functions, such as counterfeit-prevention query and TX-disable. Common
transceivers include XFP, SFP, SFP+, and QSFP+.
Data rate
Data rate is the number of bits transmitted per second. The unit of measure for data rate is Mbps
(Megabits per second) or Gbps (Gigabits per second). Fiber transceiver modules available for H3C
devices mainly provide the following levels of data rates: 100 Mbps, 155 Mbps, 622 Mbps, 1 Gbps, 2
Gbps, 2.5 Gbps, 4 Gbps, 8 Gbps, 10 Gbps, 40 Gbps, and 100 Gbps.
Transmission distance
The transmission distance of fiber transceiver modules is divided into short and long-range types. A
distance of 2 km (1.24 miles) and below is generally considered as short-range type. 10 km (6.21 miles)
is considered as long-range type.
Transmission distances provided by fiber transceiver modules are mainly limited by certain loss and
dispersion suffered during the transmission of optical signals over optical fibers.
• Loss is the optical energy loss due to the absorption, dispersion and leakage over the media when
light travels through optical fibers. This loss increases in direct ratio to transmission distance.
• Dispersion happens mainly because electromagnetic waves of different wavelengths travel at
different rates over the same medium, causing different wave components of optical signals to