Fiber Optic Links

AFL - 500 Analog Fiber Optic Link

  1. The AFL - 500 is a Perfect Solution when you need to:
  2. Transfer an Analog Signal from a Noisy Environment.
  3. Isolate a Signal from High Voltage Sources.
  4. Eliminate Ground Loops.
  5. Have Accuracy and High Signal / Noise Ratio.
  6. Have an Excellent System Reliability.

By combining Fiber Optic Technology with Advanced Proprietary Hardware, we provide Researchers and Industry with the means to isolate a Signal from Electrically Hostile Environment, Transmit it over upto 100km to the Data Acquisition System, while Conditioning the Signal. This method eliminates the Addition of Noises generated by Electrical Machinery, Line Noises, Ground Loops and Digital Noise to your Analog Signals. The AFL - 500 Analog Fiber Optic Link is used for Transferring Analog Signals over a Fiber Optic Link. This product is also known as “Analog Optical Link” or “Analog Fiber Link”.

  1. The AFL - 500 Consists of the Following Components:
  2. An Analog Fiber Optic Transmitter: AFL - 500 / Tx
  3. An Analog Fiber Optic Receiver: AFL - 500 / Rx
  4. Upto 50km of of Glass Fiber (30dB Optical Budget using Single-mode Fiber)

The Link is connected between the Signal Source at the Transmitter and the Signal Output at the Receiver

  1. Features:
  2. Excellent Signal Isolation.
  3. Prevents Ground Loops and Computer Noise Effects on your Analog Signals.
  4. Transfers Analog Signals to Distances of upto 50km.
  5. Linearity: Better than ±0.1%.
  6. Low Noise: S/N Ratio: 86dB.
  7. Input Signal: Upto ±0V @ DC - 20kHz (DC to 30kHz Optional).
  1. Advantages:
  2. Low Noise Transfer of Analog or Digital Data (such as RS-232 Interface), particularly beneficial in Electrically Noisy Environments and for Transmission over Long Distance.
  3. For Medical Tests: The Patient is Isolated from Data Acquisition System and from any Other High Voltage Source.
  4. Optional Instrumentation Amplifier Input Stage provides a Differential Input, with an Adjustable Gain of 10 - 2,000 for Direct Connection of any sensor such as: Strain Gage, Piezo, EEG & ECG, Temperature, Humidity, Pressure, etc.
  5. Isolates Delicate Test Equipment from Computer-generated Noise and Spikes: Noises from Computer do not return into your System.
  6. Eliminates the formation of “Ground Loops” (when Two Instruments are connected to Separate Power Lines or have a Difference between their Ground Voltage Potentials).
  7. Total Protection of Signal Processor's Input Stage from Accidental Sensor Malfunction (e.g. Short to Mains Voltage or a Lightning Shock).
  8. Replaces bulky coaxial cables with compact fiber optic cables - especially important when rewiring existing ducts.
  9. Transfers Analog Signals to distances of upto 100km with very high accuracy.
  1. Technical Specifications:

Input / Output Range:

±10V Standard; ±1V ±100mV Optional


±0.1% Min.

Frequency Response:

DC to 20kHz (-3dB) DC to 30kHz Optional

Output Noise:

<1mV RMS
(For 1:1 Transmission Ratio, DC - 20kHz Bandwidth)

Supply Voltage:

±15V Regulated, Floating Power Supply

Optical Fiber:

Glass, 62.5/125 Micron Dia. Standard (upto 1km);
9/125 Micron Optional (upto 50km)

Transmission Range:

Upto 100km with Single-mode Fiber

Dynamic Range:

86dB (±10V range)

Voltage Isolation

Input to Output:

Infinite Voltage

Input / Output to Mains:

Standard 800V, Optional upto 2,500V

Battery Operated:

Infinite Voltage

Optical Budget using Single-mode Transceivers:


  1. Ordering Information:
  2. The AFL - 500 is Input Single-ended, in 3 ranges: ±10V (Standard) or ±1V or ±100mV.
  3. Single Ended Input (S) is Standard. Differential Input (D) may be ordered with Input Range of ±10V, ±1V, ±100mV, ±10mV, ±1mV or Adjustable (A).
  4. A Stabilized Power Supply is also required for each side. It can supply upto 5 (optionally 10) Receivers or Transmitters.
  1. Power Supplies:

AFL - 500 - 05: 5 Channel Power Supply
(For one side)

AFL - 500 - 10: 10 Channel Power Supply
(For One Side) (Rear View)

AFL - 500 - BAT:
(Battery Operated Power Supply)

Can run upto 5 Channels for upto 10 Hours. Includes a 12V / 8AH Battery, DC2DC Converter, Charger + Cables. Larger Batteries with Higher Capacity are available. (Available in OEM version)

AFL - 500 - 10: 10 Channel Power Supply
(For One Side) (Front View)

  1. Rack Mounting (AFL - 500 Rack):

19″ Rack Front

19″ Rack Back

A Standard 19″ Rack Mounting Case for upto 10 AFL - 500 Units (Receivers or Transmitters)
With ON/OFF Switch and Power Supply / Charger Input

All Specifications are subject to change without a Prior Notice

For any sort of clarifications kindly contact: