Optical Data Links For Point-Of-Sale (POS) Electronic Terminals, Communications And Control

Charles C. K. Cheng; Bipin D. Parikh

doi:10.1117/12.958678

19 September 1980 Optical Data Links For Point-Of-Sale (POS) Electronic Terminals, Communications And Control

Charles C. K. Cheng, Bipin D. Parikh

Proceedings Volume 0224, Fiber Optics for Communications and Control; (1980) https://doi.org/10.1117/12.958678
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

This paper describes an optical data link designed to meet high performance, reliability, and cost requirements at 1.25 and 10 Mb/s. Several new technologies are embodied in this design. This link utilizes a fast, broad-area, low-brightness light-emitting diode (LED) optical source, a low-loss optical fiber having a large core and high numerical aperture (N.A.), and a PIN photodiode detector. Rather simple circuitry is used to drive the LED and to regenerate the received optical signal at the PIN. The optical interfacing hardware is designed to provide simultaneous transmission of the optical and electrical signals, making the optical data link compatible with mainframe hardware and providing relocatability and reduced installation costs. The data link has met the various performance specifications for point-of-sale (POS) terminals in the laboratory, and it is presently being evaluated more extensively.

Citation Download Citation

Charles C. K. Cheng and Bipin D. Parikh "Optical Data Links For Point-Of-Sale (POS) Electronic Terminals, Communications And Control", Proc. SPIE 0224, Fiber Optics for Communications and Control, (19 September 1980); https://doi.org/10.1117/12.958678

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