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Optical Splitter

An optical splitter is used to split one channel of optical signals into multiple channels. It has an outdoor fiber access terminal for housing its main module, the optical splitting module. By working with an optical splitter, RTN 320 can implement 1+1 HSB and cascade EPLA.

Functions and Features

An optical splitter uses its optical splitting module to split optical signals.

Functions and Features

An optical splitter evenly splits one channel of GE optical signals into two channels.

Figure 1 shows the function diagram for an optical splitter.Figure 1 Optical splitter function diagram 

  • In the transmit direction, an optical splitter evenly splits one channel of GE optical signals into two channels and sends them to the active and standby RTN 320s.
  • In the receive direction, an optical splitter receives optical signals from the GE port of the active RTN 320. (The GE port of the standby RTN 320 does not transmit optical signals.)

Installation Modes

An optical splitter can be installed on:

  • An outdoor wall
  • A pole with a diameter ranging from 30 mm to 120 mm
  • A tower

Ports

The ports of an optical splitter are located in the fiber distribution area of the optical splitter.

Appearance and Structure

An optical splitter has a protective cover, as shown in Figure 1 and Figure 2.Figure 1 Appearance of an optical splitter (front) 

Figure 2 Appearance of an optical splitter (bottom) 

 NOTE:Normally, an optical splitter does not need to be grounded when working with RTN 320.

Figure 3 shows the internal structure of an optical splitter.Figure 3 Internal structure of an optical splitter 

Ports

The three ports in the fiber distribution area connect the optical splitting module and equipment. The number and label on each fiber indicate the connection relationship. For details, see Figure 4.Figure 4 Fiber connection relationships 

Fiber Number Label Connector Type Description
101 M-Rx LC/UPC Connected to the GE receive port on the main RTN 320
201 M-Tx Connected to the GE transmit port on the main RTN 320
102 S-Rx Connected to the GE receive port on the standby RTN 320
202 S-Tx Connected to the GE transmit port on the standby RTN 320
IN2 C-Rx Connected to the GE receive port on customer equipment
IN1 C-Tx Connected to the GE transmit port on customer equipment

The fiber adapters for connecting pigtails in the fiber distribution area provide the anti-misinsertion function. Install pigtails based on the labels attached to them.

Labels

There are three labels on the fiber access terminal of an optical splitter: fiber access terminal label, optical splitting module label, and ground point label.Figure 1 Labels of an optical splitter 

Technical Specifications

This section describes the technical specifications of an optical splitter, including environment and performance specifications.

Item Specifications
Fiber type Single-mode
Operating wavelength 1310 nm/1490 nm/1550 nm
Working bandwidth 1310±40 nm/1490±10 nm/1550±40 nm
Split ratio Equal splitting
Insertion loss ≤ 3.8 dB
Operating temperature -40°C to +65°C
Storage temperature -40°C to +70°C
Working humidity ≤ 95% (+40°C)
Atmospheric pressure 70-106 kPa
Protection class IP55
Dimensions (H x W x D) 296 mm x 238 mm x 70 mm
Weight 3.6 kg (including the fiber access terminal)

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