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Electronic Devices (Active)

Electronic Devices (Active)
Plastic Optical Fiber Electronic Components (Active Components)

Electronic devices or also known as active components are the key parts in fiber optic transmission systems. Components that require an electrical input in order for power are considered electronic or active devices. 

Optical transmission systems generally consist of three main components. A transmitter converts electric sequences of signals into an optical signal which is then transmitted into optical transmission channel. The transmission channel or in this case the fiber optic cable, forwards the signal to the receiver. Transmission channels may contain other passive or active components. Once the receiver obtains the signal it converts it back into an electric signal which is then further used. 

There are a variety of electronic and active components available for many different applications. 

POF electronic devices include:

  1. Transceivers
  2. Ethernet Converters
  3. Media Converters
  4. Repeaters
  5. Residential Wiring Accessories
  6. Video Devices

Traditional light sources for SI-POF have been LEDs, which were limited to speeds of 1-100Mbps. Using advanced modulation schemes, the speed of low-cost LEDs has been increased to 1Gbps. A more advanced LED, the resonant cavity LED (RCLED), has been developed with speeds of up to 400Mbps. Vertical cavity lasers (VCSELs) are now being developed for operation in the visible range. This should allow date rates of greater then 1Gbps.

Editers Note:  POF vs. Other Transmission Media

 The main competitors to POF are copper wire and multimode glass optical fiber (GOF). A comparison of POF versus GOF and copper wire. Copper is the main barrier to the increase of POF in today's systems. As the prices of optical components come down and the need for high speed increases, copper starts to run out of steam, and an optical medium is needed. Because of the large embedded base of copper, the familiarity, and the ease of use — and thus the comfort level with the technology among technicians and design engineers — it is difficult for POF to displace copper. In addition, copper technology for transmitters and cables continues to be developed. Wireless is also a potential competitor for all media, but is difficult to compare with hard wiring because of the range of frequencies possible.