01716nam 2200409 a 450 991070099010332120110830164348.0(CKB)5470000002413122(OCoLC)748438315(EXLCZ)99547000000241312220110830d2011 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierTraffic and vehicle safety[electronic resource] reauthorization offers opportunities to extend recent progress : testimony before the Subcommittee on Consumer Protection, Product Safety, and Insurance, Committee on Commerce, Science, and Transportation, U.S. Senate /statement of Susan Fleming[Washington, D.C.] :U.S. Govt. Accountability Office,[2011]1 online resource (17 pages) illustrationsTestimony ;GAO-11-866TTitle from PDF title screen (viewed Aug. 22, 2011)."For release ... July 27, 2011."Includes bibliographical references.Traffic and vehicle safety Traffic regulationsUnited StatesTraffic safetyUnited StatesTraffic regulationsTraffic safetyFleming Susan A1391194United States.Congress.Senate.Committee on Commerce, Science, and Transportation.Subcommittee on Consumer Protection, Product Safety, and Insurance.United States.Government Accountability Office.GPOGPOBOOK9910700990103321Traffic and vehicle safety3470771UNINA05084nam 22006014a 450 991082997710332120170815123314.01-280-72130-897866107213060-470-04222-20-470-04221-4(CKB)1000000000354841(EBL)281816(OCoLC)162504953(SSID)ssj0000157474(PQKBManifestationID)11167585(PQKBTitleCode)TC0000157474(PQKBWorkID)10140285(PQKB)10537443(MiAaPQ)EBC281816(PPN)137142609(EXLCZ)99100000000035484120060111d2007 uy 0engur|n|---|||||txtccrFoundations for guided-wave optics[electronic resource] /Chin-Lin ChenHoboken, N.J. Wiley-Intersciencec20071 online resource (482 p.)Description based upon print version of record.0-471-75687-3 Includes bibliographical references and indexes.FOUNDATIONS FOR GUIDED-WAVE OPTICS; CONTENTS; PREFACE; 1 BRIEF REVIEW OF ELECTROMAGNETICS AND GUIDED WAVES; 1.1 Introduction; 1.2 Maxwell's Equations; 1.3 Uniform Plane Waves in Isotropic Media; 1.4 State of Polarization; 1.5 Reflection and Refraction by a Planar Boundary between Two Dielectric Media; 1.5.1 Perpendicular Polarization; 1.5.2 Parallel Polarization; 1.6 Guided Waves; 1.6.1 Transverse Electric Modes; 1.6.2 Transverse Magnetic Modes; 1.6.3 Waveguides with Constant Index in Each Region; Problems; References; 2 STEP-INDEX THIN-FILM WAVEGUIDES; 2.1 Introduction2.2 Dispersion of Step-Index Waveguides2.2.1 Transverse Electric Modes; 2.2.2 Transverse Magnetic Modes; 2.3 Generalized Parameters; 2.3.1 The a, b, c, d, and V Parameters; 2.3.2 The bV Diagram; 2.3.3 Cutoff Thicknesses and Cutoff Frequencies; 2.3.4 Number of Guided Modes; 2.3.5 Birefringence in Thin-Film Waveguides; 2.4 Fields of Step-Index Waveguides; 2.4.1 Transverse Electric Modes; 2.4.2 Transverse Magnetic Modes; 2.5 Cover and Substrate Modes; 2.6 Time-Average Power and Confinement Factors; 2.6.1 Time-Average Power Transported by TE Modes; 2.6.2 Confinement Factor of TE Modes2.6.3 Time-Average Power Transported by TM Modes2.7 Phase and Group Velocities; Problems; References; Bibliography; 3 GRADED-INDEX THIN-FILM WAVEGUIDES; 3.1 Introduction; 3.2 Transverse Electric Modes Guided by Linearly Graded Dielectric Waveguides; 3.3 Exponentially Graded Dielectric Waveguides; 3.3.1 Transverse Electric Modes; 3.3.2 Transverse Magnetic Modes; 3.4 The WKB Method; 3.4.1 Auxiliary Function; 3.4.2 Fields in the R Zone; 3.4.3 Fields in the L Zone; 3.4.4 Fields in the Transition Zone; 3.4.5 The Constants; 3.4.6 Dispersion Relation; 3.4.7 An Example3.5 Hocker and Burns' Numerical Method3.5.1 Transverse Electric Modes; 3.5.2 Transverse Magnetic Modes; 3.6 Step-Index Thin-Film Waveguides versus Graded-Index Dielectric Waveguides; Problems; References; 4 PROPAGATION LOSS IN THIN-FILM WAVEGUIDES; 4.1 Introduction; 4.2 Complex Relative Dielectric Constant and Complex Refractive Index; 4.3 Propagation Loss in Step-Index Waveguides; 4.3.1 Waveguides Having Weakly Absorbing Materials; 4.3.2 Metal-Clad Waveguides; 4.4 Attenuation in Thick Waveguides with Step-Index Profiles; 4.5 Loss in TM(0) Mode4.6 Metal-Clad Waveguides with Graded-Index ProfilesProblem; References; 5 THREE-DIMENSIONAL WAVEGUIDES WITH RECTANGULAR BOUNDARIES; 5.1 Introduction; 5.2 Fields and Modes Guided by Rectangular Waveguides; 5.3 Orders of Magnitude of Fields; 5.3.1 The E(y) Modes; 5.3.2 The E(x) Modes; 5.4 Marcatili Method; 5.4.1 The E(y) Modes; 5.4.2 The E(x) Modes; 5.4.3 Discussions; 5.4.4 Generalized Guide Index; 5.5 Effective Index Method; 5.5.1 A Pseudowaveguide; 5.5.2 Alternate Pseudowaveguide; 5.5.3 Generalized Guide Index; 5.6 Comparison of Methods; Problems; References6 OPTICAL DIRECTIONAL COUPLERS AND THEIR APPLICATIONSA classroom-tested introduction to integrated and fiber optics This text offers an in-depth treatment of integrated and fiber optics, providing graduate students, engineers, and scientists with a solid foundation of the principles, capabilities, uses, and limitations of guided-wave optic devices and systems. In addition to the transmission properties of dielectric waveguides and optical fibers, this book covers the principles of directional couplers, guided-wave gratings, arrayed-waveguide gratings, and fiber optic polarization components. The material is fully classroom-tested and Optical wave guidesOptical wave guides.535621.3692Chen Chin-Lin541922MiAaPQMiAaPQMiAaPQBOOK9910829977103321Foundations for guided-wave optics3945590UNINA