EDFA with 2 to 64 Multi-Output Optical Amplifier

F-EDFA-XX-YY
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Description Features Drawings Models Accessories Specification Support

Description

The Thor Fiber Multi-Output F-EDFA-XX-YY series is designed for use in CATV, FTTH, and HFC networks. It’s well-suited for both long-distance optical transmission and local fiber distribution. Housed in a standard 19” rackmount chassis, each unit is available with 4,8, 16, 32, or 64 output ports, and supports a range of output power levels to meet various system requirements.

Output power is available from +14 dBm to +23 dBm, with custom configurations available upon request.

Operating in the 1550nm wavelength range, this amplifier series covers the full gain window of 1540–1560nm. It offers a reliable and cost-effective solution for scaling broadband video networks.

Thor’s multi-port EDFAs are engineered for high-performance transmission of both CATV RF analog signals (NTSC/PAL) and digital signals (QAM or ATSC). They utilize high-quality pump lasers and premium erbium-doped fiber components to ensure stable and long-lasting operation. Built-in APC, ACC, and ATC circuitry helps regulate output power and protect the system under varying conditions.

Each unit features a front-panel LCD display for real-time status and alarm monitoring. For added safety, the laser will automatically shut down if input power is lost, protecting both the equipment and your network.

 

Features

Key Features – Multi-Output EDFA Optical Amplifier

  • High-Density, High-Efficiency Design – Delivers up to +23 dBm optical output per port

  • Flexible Output Options – Available with 2, 4, 8, 16, 32, or 64 optical outputs

  • Standard 19” Rackmount Chassis – Compact and ideal for headend or equipment room installations

  • Web-Based NMS Management – Integrated Web GUI for remote monitoring, configuration, and alarms

  • SC/APC  or LC/APC Connectors – Industry-standard connectors for reliable and low-loss connections

Drawings

Model Selection

Model Format: F-EDFA-XX-YY

  • XX = Number of Optical Outputs (2, 4,8,16,32 or 64 outputs via SC/APC or LC/APC connectors)

  • YY = Optical Output Power per Port in dBm (+14, 16,18,20, 22 and +23 dBm each)

These EDFAs are designed for distributing a single 1550nm input signal across multiple fiber outputs with precise power levels to compensate for optical losses in splitters and fiber runs.


Examples:

  • F-EDFA-8-16 – 8 outputs, each delivering +16 dBm optical power

  • F-EDFA-4-20 – 4 outputs, each delivering +20 dBm optical power

  • F-EDFA-8-18 – 8 outputs, each delivering +18 dBm optical power

  • F-EDFA-16-14 – 16 outputs, each with +14 dBm for mid-sized fiber distribution

  • F-EDFA-32-20 – 32 outputs, each with +20 dBm for large CATV or FTTH systems

  • F-EDFA-64-12 – 64 outputs, each with +12 dBm, ideal for short-distance or low-loss applications


How to Select the Right EDFA Model

To ensure proper power distribution across your network, follow this method:

  1. Determine how many end-points (receivers) you need to serve.

  2. Select the number of EDFA outputs based on the total number of splitters you'll deploy.

  3. Account for optical losses:

    • Insertion loss of external splitters (e.g., ~14 dB for 1x16).

    • Fiber loss (~0.25 dB/km × distance).

  4. Choose an EDFA model with sufficient output power per port to compensate for those losses.


Example: Distributing CATV RF to 512 Endpoints

  • Use: 32-output EDFA

  • Each output connects to a 1x16 external splitter → 32 × 16 = 512 receivers

  • Optical loss:

    • Splitter loss: ~14 dB

    • Fiber loss (20 km): ~5 dB

    • Total loss: ~19 dB

  • Receiver sensitivity: 0 dBm

  • Required EDFA output per port: ≥ +19 dBm

  • Recommended model: F-EDFA-32-20
    (32 outputs, each with +20 dBm output power)

F-EDFA Series Part Number Matrix

Model Format: F-EDFA-XX-YY
XX = Number of Outputs (2, 4, 8, 16, 32, 64)
YY = Output Power per Port in dBm (14, 16, 18, 20, 22, 23)

Outputs Power Levels (dBm) Part Numbers
2 14, 16, 18, 20, 22, 23 F-EDFA-2-14
F-EDFA-2-16
F-EDFA-2-18
F-EDFA-2-20
F-EDFA-2-22
F-EDFA-2-23
4 14, 16, 18, 20, 22, 23 F-EDFA-4-14
F-EDFA-4-16
F-EDFA-4-18
F-EDFA-4-20
F-EDFA-4-22
F-EDFA-4-23
8 14, 16, 18, 20, 22, 23 F-EDFA-8-14
F-EDFA-8-16
F-EDFA-8-18
F-EDFA-8-20
F-EDFA-8-22
F-EDFA-8-23
16 14, 16, 18, 20, 22, 23 F-EDFA-16-14
F-EDFA-16-16
F-EDFA-16-18
F-EDFA-16-20
F-EDFA-16-22
F-EDFA-16-23
32 14, 16, 18, 20, 22, 23 F-EDFA-32-14
F-EDFA-32-16
F-EDFA-32-18
F-EDFA-32-20
F-EDFA-32-22
F-EDFA-32-23
64 14, 16, 18, 20, 22, 23 F-EDFA-64-14
F-EDFA-64-16
F-EDFA-64-18
F-EDFA-64-20
F-EDFA-64-22
F-EDFA-64-23

Accessories & Upgrades

Specification

Category Parameter Standard Model High-Power Model Notes
Optical Features Operating Wavelength (nm) 1540 – 1563 1545 – 1565 CATV / FTTH optimized
Optical Input Power (dBm) -8 to +9 -5 to +10 Compatible with external modulators
Output Power per Port (dBm) +15 to +24 N/A Custom output per port (1RU/2RU)
Total Output Power (dBm) Up to 24 39 High-power combined output
Output Power Stability (dBm) ±0.3 ±0.5 Maintains signal balance
Noise Figure @ 0dBm (dB) 4.5 – 5.5 ≤ 6.0 Low noise design
C/N Ratio (dB) ≥ 50 GT/T 184-2002 standard
C/CTB (dB) ≥ 63 Carrier-to-composite triple beat
C/CSO (dB) ≥ 63 Carrier-to-composite second order
Return Loss - Input (dB) ≥ 55 ≥ 45 Laser reflection protection
Return Loss - Output (dB) ≥ 55 ≥ 45  
Connector Type SC/APC, LC/APC SC/APC, FC/APC Model-specific options
Control Interface Network Management RJ45 – SNMP  
Local Port RS232  
Electrical Power Supply Voltage 90–265V AC / -48V DC AC160–250V / DC48V Dual Hot-swappable PSU
Power Consumption (W) 140 – 160 ≤ 70 Varies by output level
Power Module Type Redundant 1+1, Hot-swappable  
Environmental Operating Temp (°C) -10 to +60 -10 to +45  
Storage Temp (°C) -40 to +80 -30 to +70  
Relative Humidity (operating) 5 – 90% (non-condensing) Max 95% (non-condensing)  
Relative Humidity (storage) Max 95% (non-condensing)  
Mechanical Dimensions 1RU (inches) 19 × 14 × 1.75 Standard rackmount
Dimensions 2RU (inches) 19 × 15 × 3.5 For 16–64 port systems
Dimensions (mm) 440 × 403 × 88 High-power model chassis
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