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Fiber Duplex Breakout

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We designed the Fiber Duplex Board for creating simple fiber links to embedded devices. This board has the same pinout as our Serial Breakouts, so they will connect directly to the serial header of many dev boards such as the Arduino Pro or Pro Mini. To create a fiber link between two dev boards, simply connect the Fiber Duplex Breakout to each board, connect them with two pieces of fiber cable, and then use the Serial library to send and receive data as you normally would.

This board also works in concert with the Serial Fiber Modem to create a fiber link from a dev board to a computer. We've even had success loading Arduino code over fiber this way (although because the fiber doesn't carry a DTR signal, we had to manually reset the Arduino board during upload).

The Industrial Fiber Optics line of emitters and detectors are by far the most economical way we’ve found to create a simple fiber link between two devices. The IF-E97 emitter is literally just a superbright red LED in a fancy plastic module that makes it easy to insert a piece of optical fiber and lock it in place. On the other end, the IF-D96F is a 5V TTL phototransistor in an identical enclosure. Connect the two with a piece of fiber and you have, basically, the simplest possible fiber link. Speaking of fiber, while you can certainly use glass fiber (in the proper jacket) to connect these modules together, we recommend PMMA plastic fiber! It’s cheap, it’s not at all fragile, and you can cut it with scissors. In our experience, it requires no polishing at all, simply cut it with scissors and jam it into the connector.

The emitter and detector are soldered but not screwed into place. For field applications we recommend anchoring the connectors with a screw and nut. A 4-40 screw with nut works great but we don't carry the ideal 3/8" length. Alternatively we do carry a 3/8" screw and nut in the smaller 2-56 thread.

We've tested these modules at baud rates up to 1Mbps and distances up to 50 meters with no transmission errors.

Experimental Product: SparkX products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to our forum for support or to ask a question.
  • Easily create fiber serial links between embedded devices
  • Supports Serial Baud Rates up to 1Mbps
  • 6-pin Serial Header is compatible with most Arduino Mini style dev boards
  • 5V and 3.3V compatible

Fiber Duplex Breakout Product Help and Resources

Industrial Fiber Optics Hookup Guide

January 20, 2021

Learn how to get started with our fiber optics breakout boards

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