Share Email Print

Optical Engineering

A High Resolution Analog Fiber Optics Data Communications System
Author(s): Gary J. Grimes; David R. Stevens
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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-voltage (V /F/V) and pulse width modulation (PWM) is used to reconstruct a ±1 0 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 are presented to give the designer information on V/F/V system dynamics at fre-quencies much higher than those considered to be in the V /F /V system's useful range for data acquisition and communication purposes. These data show 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.

Paper Details

Date Published: 1 August 1978
PDF: 7 pages
Opt. Eng. 17(4) 174425 doi: 10.1117/12.7972256
Published in: Optical Engineering Volume 17, Issue 4
Show Author Affiliations
Gary J. Grimes, Kappa Systems, Inc. (United States)
David R. Stevens, USAF Academy (United States)

© SPIE. Terms of Use
Back to Top