A High Resolution Analog Fiber Optics Data Communications System

Gary J. Grimes; David R. Stevens

doi:10.1117/12.955172

15 November 1976 A High Resolution Analog Fiber Optics Data Communications System

Gary J. Grimes, David R. Stevens

Proceedings Volume 0095, Modern Utilization of Infrared Technology II; (1976) https://doi.org/10.1117/12.955172
Event: 20th Annual Technical Symposium, 1976, San Diego, United States

Abstract

A high resolution fiber optics communications system (FOCS) for analog signals has been designed, built, and tested at the Frank J. Seiler Research Laboratory, USAF Academy, Colorado. The FOCS consists of a small transmitter and receiver pair and an optical waveguide. A combination of voltage-to-frequency-to-voltage (V/F/V) and pulse width modulation (PWM) is used to reconstruct a ± 10 volt analog output signal from an identical ± 10 volt analog input signal. A digital output is easily obtained since the data transmission is pulsed. The FOCS is equally applicable to free-space infrared communications. The advantages of fiber optics have not previously been available for general purpose data acquisition because their application has been limited to dedicated digital systems and to low resolution, high frequency video systems. Data collected on a very general V/F/V system is presented to give the designer information on V/F/V system dynamics at frequencies much higher than those considered to be in the V/F/V system's useful range for data acquisition and communication purposes. This data shows that the V/F/V process may be useful for servo loop applications at much higher frequencies than it is for data acquisition and communication applications.

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Gary J. Grimes and David R. Stevens "A High Resolution Analog Fiber Optics Data Communications System", Proc. SPIE 0095, Modern Utilization of Infrared Technology II, (15 November 1976); https://doi.org/10.1117/12.955172

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KEYWORDS

Analog electronics

Telecommunications

Data communications

Infrared radiation

Data acquisition

Fiber optics

Fiber optic communications

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