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NAVAL POSTGRADUATE SCHOOL Monterey California , THESIS DESIGN AND IMPLEMENTATION OF A FIBER OPTIC TOKEN-RING LOCAL AREA NETWORK by Gary Bibeau December 1991 Thesis Advisor: John P. Powers Approved for public release; distribution is unlimited 1257701 UNCLASSIFIED SECURITY CLASS.FiCATiO\ OP TH!S PAGE REPORT DOCUMENTATION PAGE FormApproveo OMBNo 0704-011 1a REPORT SECURITY CLASSIFICATION lb RESTRICTIVE MARKINGS UNCLASSIFIED 2a SECURITY CLASSIFICATION AUTHORITY 3 DISTRIBUTION/AVAILABILITY OF REPORT Approved for public release; 2b DECLASSIFICATION/DOWNGRADING SCHEDULE distribution is unlimited 4 PERFORMING ORGANIZATION REPORT NUMBER(S) 5 MONITORING ORGANIZATION REPORT NUMBER(S) 6a. NAME OF PERFORMING ORGANIZATION 6b OFFICE SYMBOL 7a. NAME OF MONITORING ORGANIZATION (If applicable) Naval Postgraduate School EC Naval Postgraduate School 6c. ADDRESS (City, State, and ZIPCode) 7b ADDRESS(City. State, and ZIPCode) Monterey, CA 93943-5000 Monterey, CA 93943-5000 8a. NAME OF FUNDING. SPONSORING 8b. OFFICE SYMBOL 9 PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER ORGANIZATION (If applicable) 8c. ADDRESS(Cry, State, and ZIPCode) 10 SOURCE OF FUNDING NUMBERS PROGRAM PROJECT TASK WORK UNIT ELEMENT NO NO. NO ACCESSION NO ^ 11.T.TLEf/ndudeS«cUntyC/as„«cat,on) DESIGN :MpLEMENTATI0N OF A FIBER OPTIC TOKEN- RING LOCAL AREA NETWORK 12. PERSONAL AUTHOR(S) BIBEAU. Gary 13a. TYPE OF REPORT 13b TIME COVERED 1A. DATE OF REPORT (Year,Month, Day) 15 PAGE COUNT Master's Thesis FROM TO 1991 December 70 16 supplementary notation The views expressed in this thesis are those of the author and do not reflect the official policy or position of the Depart- ment of Defense or the US Government. __^^_ 17 COSATI codes 18 SUBJECT TERMS (Continue on reverse if necessary and identify by block number) FIELD GROUP SUB-GROUP fiber optic data transmission, electric to optical signal conversion 19 ABSTRACT (Continue on reverse if necessary and identify by block number) This thesis describes the design and implementation of a fiber optic token-ring local area network (LAN). This design features fiber optic channels between stations on the network without the use of a wiring concentrator. The initial LAN electrical signal operating at 4 Mbps was provided by a LAN adapter card based on the TMS380 chipset developed for twisted pair copper wire. Since the physical characteristics of fiber and wire vary, use of this adapter necessitated that the design be able to deceive system initialization diagnostics and continuity checks designed for a wire system. Successful LAN communications over the fiber optic channels are described. 20 DISTRIBUTION/AVAILABILITY OF ABSTRACT 21 ABSTRACT SECURITY CLASSIFICATION Q UNCLASSIFIED C?UNCLASSIFIED/UNLIMITED SAME AS RPT DTIC USERS 22a NAME OF RESPONSIBLE INDIVIDUAL 22b TELEPHONE (Include AreaCode) 22c OFFICE SYMBOL POWERS, John P. 408-646-2679 EC/Po DD Form 1473. JUN 86 Previouseditionsareobsolete SECURITY CLASSIFICATION OF THIS PAGE S/N 0102-LF-014-6603 UNCLASSIFIED Approved for public release; distribution is unlimited DESIGN AND IMPLEMENTATION OF A FIBER OPTIC TOKEN-RING LOCAL AREA NETWORK by Gary Bibeau Captain, United Sxates Marine Corps BS, University of Wisconsin, 1980 Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ELECTRICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL December 1991