Intrinsic Loss in Infrared Optical Fibers
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Intrinsic Loss in Infrared Optical Fibers
Utah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn T Intrinsic Loss in Infrared Optical FibersTantiphanwadiUtah State UniversityFollow this and additional works at: https://digitalcommons.usu.edu/etd Ỡ1 Part of the Physics CommonsRecommended CitationTantiphanwadi, Prapassom, intrinsic Loss in Infrared Optical Fibers' (1992). All Graduate Theses and Dissertations. 2098.https://digitalcommons. Intrinsic Loss in Infrared Optical Fibersusu.edu/etd/2098This Thesis is brought to you for free and open access by the Graduate Studies at DigitalCommons@USU. It has been accepted for inclusiIntrinsic Loss in Infrared Optical Fibers
on in All Graduate Theses and Dissertations by an authorized administrator of DigitalCommons@USU. For more information, please contact digitalcommons@Utah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn T Intrinsic Loss in Infrared Optical Fibersllment of the requứements for the degree ofMASTER OF SCIENCEinPhysicsUTAH STATE UNIVERSITYLogan, Utah19921I INTRODUCTIONRecently, in communication system, liber optics has become a most interesting development tool as a transmission medium. It first appeared as a feasible transmission medium in 1970 Intrinsic Loss in Infrared Optical Fibers. The reason for die development in fiber optics comes from the overwhelming advantage in technology and economy compared to wires and coaxial links.Intrinsic Loss in Infrared Optical Fibers
For technology progress, typically, optical fiber has a wide transmission band-width (0.1- WOO GHz), lower loss per unit length (0.15 - 5 dI3 km"1 [1]Utah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn T Intrinsic Loss in Infrared Optical Fiberso 50 kilometers, whereas signals transmitted over copper wires must be reamplified every 4 to 6 kilometers. The economical advantage arc as follows: a typical cable liber weighs only about 3 kg/km; costs under $500/km or less, and has a longer repeater spacing of up to 100 km or more at a data rate Intrinsic Loss in Infrared Optical Fibersof at least several hundred megabits per second. Because the optical fibers meet both demands, it has enabled US to construct high bit-rate and long hIntrinsic Loss in Infrared Optical Fibers
aul communication systems in metropolitan area.The type of optical fiber which has major impact on today well-developed technology is the silica-basedUtah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn T Intrinsic Loss in Infrared Optical Fibersand has achieved an intrinsic loss of 0.2 dB km’1 at 1.5 pm |2j. In many ÍR electro-optica] systems, there arc needs to transmit in wavelengths which require entữely different materials and fabrications. This has encouraged many researchers to develop ĨR fiber optics because it can transmit longer w Intrinsic Loss in Infrared Optical Fibersavelengths from 2 to 14 pm [2].This report is divided into five chapters. Following this introductory chapter, basic concepts about IR optical fibers,Intrinsic Loss in Infrared Optical Fibers
intrinsic transmission loss, materials, and classification of opdeal fibers are described in chapter 2. Chapter 3 and chapter 4 are concerned about iUtah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn T Intrinsic Loss in Infrared Optical Fibers211 INTRODUCTION TO IR OPTICAL FIBERSIn 1979, IR fibers, the second generation following to silica-based fiber, has emerged by its promising wider transparencies in wavelengths than those of silica-based fibers. The distinctive discussions about the possibility of ultralow loss less dian 0.02 dB km’ Intrinsic Loss in Infrared Optical Fibersl for IR transmitting materials are made by Pinnow et aL (31, Van Uitert and Wen) pie [4], and Goodmand [5]. These discussions motivated investigationIntrinsic Loss in Infrared Optical Fibers
s of nonsilica-based IR fiber materials. In this chapter, 1R transmission loss, materials and classification of the optical fibers ate described.A. LoUtah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn T Intrinsic Loss in Infrared Optical Fibers distance because of its interaction with the constituent atoms, such as absorptions and scatterings. The intensity I of the light transmitted in the material of thickness z along the direction of propagation is expressed as Intrinsic Loss in Infrared Optical FibersUtah State UniversityDigitalCommons@USUAll Graduate Theses and DissertationsGraduate Studies33939Intrinsic Loss in Infrared Optical FibersPrapassorn TGọi ngay
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