Fiber Optic Protected Distribution System

David L. Baldwin; Albert D. Bender

doi:10.1117/12.934022

22 March 1983 Fiber Optic Protected Distribution System

David L. Baldwin, Albert D. Bender

Proceedings Volume 0355, Fiber Optics: Short-Haul and Long-Haul Measurements and Applications I; (1983) https://doi.org/10.1117/12.934022
Event: 26th Annual Technical Symposium, 1982, San Diego, United States

Abstract

An optical fiber protected distribution system (PDS) has been developed for data transmission links which require cost effective protection from unauthorized access. The nonemanating characteristics of glass optical fibers make them an ideal transmission medium that precludes all but the most sophisticated attempts at compromising the signal integrity. In the PDS, intrusion attempts are limited by the use of detection alarms which activate when the optical fiber cable is penetrated or significantly altered. In an alarm condition, the data is terminated until system integrity is verified and the system is reinitialized. Even if the optical power were to be tapped, signal decoding is made difficult by burying the signal in the natural quantum noise associated with any optical power. The PDS system will transfer RS-232 data from DC to 20 kb/s over link distances up to 2 km with full quantum noise limited protection. The same data rates can be transmitted up to 10 km with alarms but with somewhat reduced protection. The optical fiber PDS offers an alternative for applications that previously required bulky, expensive ferrous metal conduit.

Citation Download Citation

David L. Baldwin and Albert D. Bender "Fiber Optic Protected Distribution System", Proc. SPIE 0355, Fiber Optics: Short-Haul and Long-Haul Measurements and Applications I, (22 March 1983); https://doi.org/10.1117/12.934022

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available