noise and optical amplification
The Effects of ASE Noise and the Position of EDFA Amplifier on Multi-Wavelength OCDM-Based Long-Reach Passive Optical Networks
... multi-wavelength OCDM and EDFA Moreover, we analyzed the effects of ASE noise on the performance of OCDM-based LR-PON Other noise and interference such as shot noise, thermal noise, beat noise, and MAI are ... value of I data and I data should be zero in all related equations -80 Noise (dBm) Shot noise -100 Total noise -120 Thermal noise -140 -160 Beat noise ASE-ASE -180 -200 -40 Beat noise signal-signal ... effects 59 of EDFA noise, i.e ASE noise, on the performance of OCDM-based LR-PON Other noise and interference such as shot noise, thermal noise, beat noise, and multiple-access interference (MAI)...
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Stimulated Emission and Optical Gain in Semiconductors
... orbital and consists of a heavy-hole band, a light-hole band and a split-off band [3] The upper edge of the valence band is at the À point, the center of k space, where the heavy-hole and light-hole ... etc.) and II–VI compound semiconductors have a band structure similar to that of Fig 3.1 and the direct-transition bandgap On the other hand, for group IV semiconductors such as Si and Ge, and ... parabolic band Here, Ec and Ev are energies of the lower edge of the conduction band and the upper edge of the valence band, respectively, the difference Eg ¼ Ec À Ev is the bandgap energy, and mn...
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Tài liệu Gear Noise and Vibration P2 docx
... 172, 1958, pp 87-112 Niemann, G and Baethge, J., 'Transmission error, tooth stiffness, and noise of parallel axis gears.' VDI-Z, Vol 2, 1970, No and No Palmer, D and Munro, R.G., 'Measurements ... however, noise is the critical factor, "design load" may refer to the condition where noise has to be a minimum and may be only 10% of the permitted maximum load If the requirement is for minimum noise ... short, or intermediate relief In 1970, Neimann in Germany [4] and Munro in the U.K introduced and developed the ideas of "long" and "short" relief designs for the two extreme load cases where...
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Tài liệu Gear Noise and Vibration P1 doc
... Understanding Gear Noise, J Derek Smith Chains for Power Transmission and Material Handling: Design and Applications Handbook, American Chain Association Corrosion and Corrosion Protection Handbook, ... Selection and Application, Duane Tandeske 73 Zinc Handbook: Properties, Processing, and Use in Design, Frank Porter 74 Thermal Fatigue of Metals, Andrzej Weronski and Tadeusz Hejwowski 75 Classical and ... Revised and Expanded, Earl Logan, Jr 86 Vibrations of Shells and Plates: Second Edition, Revised and Expanded, Werner Soedel 87 Steam Plant Calculations Manual: Second Edition, Revised and Expanded,...
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iec 60332-2_2 tests on electric and optical fibre cables under fire condition
... report on ONE STANDARD and ONE STANDARD ONLY Enter the exact number of the standard: (e.g 60601-1-1) Q6 standard is out of date standard is incomplete standard is too academic standard is too superficial ... concerning standardization in the electrical and electronic fields To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical ... This first edition of International Standard IEC 60332-2-2, together with IEC 60332-2-1, cancel and replace the third edition of IEC 60332-2, published in 1989, and constitute a technical revision,...
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iec 60332-1_1 tests on electric and optical fibre cables under fire condition
... report on ONE STANDARD and ONE STANDARD ONLY Enter the exact number of the standard: (e.g 60601-1-1) Q6 standard is out of date standard is incomplete standard is too academic standard is too superficial ... confirmatory test arrangement and guidance IEC Guide 104, The preparation of safety publications and the use of basic safety publications and group safety publications Terms and definitions For the ... This first edition of International Standard IEC 60332-1-1, together with IEC 60332-1-2, cancel and replace the third edition of IEC 60332-1, published in 1993, and constitute a technical revision,...
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iec 60332-1_2 tests on electric and optical fibre cables under fire condition
... report on ONE STANDARD and ONE STANDARD ONLY Enter the exact number of the standard: (e.g 60601-1-1) Q6 standard is out of date standard is incomplete standard is too academic standard is too superficial ... concerning standardization in the electrical and electronic fields To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical ... This first edition of International Standard IEC 60332-1-2, together with IEC 60332-1-1, cancel and replace the third edition of IEC 60332-1, published in 1993, and constitute a technical revision,...
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iec 60332-1_3 tests on electric and optical fibre cables under fire condition
... report on ONE STANDARD and ONE STANDARD ONLY Enter the exact number of the standard: (e.g 60601-1-1) Q6 standard is out of date standard is incomplete standard is too academic standard is too superficial ... safety publications and the use of basic safety publications and group safety publications ISO 187, Paper, board and pulps – Standard atmosphere for conditioning and testing and procedure for monitoring ... edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment and the base publication incorporating amendments and Informations supplémentaires...
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iec 60332-2_1 tests on electric and optical fibre cables under fire condition
... report on ONE STANDARD and ONE STANDARD ONLY Enter the exact number of the standard: (e.g 60601-1-1) Q6 standard is out of date standard is incomplete standard is too academic standard is too superficial ... This first edition of International Standard IEC 60332-2-1, together with IEC 60332-2-2, cancel and replace the third edition of IEC 60332-2, published in 1989, and constitute a technical revision, ... concerning standardization in the electrical and electronic fields To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical...
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Tài liệu New Generation Networks and Optical Network Testbeds doc
... 100Gbps optical path and QoS service 100Gbps optical path and QoS service provisioning between terabit-class LANs provisioning between terabit-class LANs >100Gbps optical 3R 32 Optical RAM for all -optical ... management for optical path provisioning between terabit-class LANs Optical path ISP network A Terabit-class optical LAN Optical path ISP network B Optical path ISP network C Terabit-class optical LAN ... >10Tb/s λ3 λ2 Optical IP Router WDM Optical Burst Switch WDM Optical MPLS Router OXC Full-mesh NW (Centralized Control) WDM 2010〜 Year Year 〜 OADM : Optical Add/Drop Multiplexer OXC : Optical Cross-connect...
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Effects of simultaneous doping with boron and phosphorous on the structural, electronic and optical properties of silicon nanostructures
... effects of size and shape of Si-nc on the incorporation of group-III (B and Al), group-IV (C and Ge) and group-V (N and P) impurities Single-doping has been investigated both in spherical and faceted-like ... the Si144BBPH100 (with an excess of B: B atoms and P) or the Si144BPPH100-nc (with an excess of P: B and P) and finally, adding simultaneously two B and two P atoms, we obtain the Si143BBPPH100-nc ... doping influences the electronic and optical properties Here, we aim to resume the main outcome of this work and illustrate specific results only for one single-doped and codoped H-passivated Si-nw...
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synthesis and optical properties of colloidal tungsten oxide nanorods
... localized states in the band gap due to impurities.22b In light of these assignments, we suggest that the UV emission of nanorod samples in this work might correspond to the band-toband transition The ... and the intensity of this peak increases relative to that of UV emission as the length of nanorods increases A similar PL pattern with two emission maxima, yet at much lower energies of 2.8 and ... 20 nm (medium), and 130 ( 30 nm (long) The strongest PL emission peaks appear at 3.60 eV (344 nm), 3.56 eV (348 nm), 3.55 eV (349 nm) for short (25 ( nm), medium (75 ( 20 nm), and long (130 (...
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Báo cáo " The dependence of the parametric transformation coefficient of acoustic and optical phonons in doped superlattices on concentration of impurities" pot
... function, and λ = mΩ The parametric transformation coefficient of acoustic and optical phonon in doped superlattices In order to establish the parametric transformation coefficient of acoustic and optical ... ( cq , cq ) is the r creation operator and annihilation operator of an acoustic (optical) phonon for state have wave vector q The electron-acoustic and optical phonon interaction coefficients ... of the parametric transformation coefficient of acoustic and optical phonons in doped superlattices on concentration of impurities Model and quantum kinetic equation for phonons We use model for...
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UFC 3-450-01 15 May 2003UNIFIED FACILITIES CRITERIA (UFC)NOISE AND VIBRATION CONTROLAPPROVED docx
... against the noise of all the noisiest possible equipment; such overdesign would require thicker and heavier walls and floors than required by most of the equipment The noise estimates and the noise ... Noise Overall PWLs of the Principal Noise Components of Gas Turbine Engines having no Noise Control Treatments Frequency Adjustments (in dE) for Gas Turbine Engine Noise Sources Approximate Noise ... Level Specification Sample Sound Power Level Specification Bandwidth and Geometric Mean Frequency of Standard Octave and 1/3 Octave Bands 2-4 2-5 3-3 3-4 3-6 3-7 3-8 3-9 4-2 4-7 4-8 4-9 4-10 4-11...
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characterization and optical property of zno nano-,
... oxygen vacancy and interstitial zinc (VoZni) and valence band, and the peak on 574 nm relates to the transition between complex oxygen vacancy and interstitial zinc (VoZni) and valence band or between ... and microrods are shown in Fig 3b and c The spectra of the ZnO microrods mainly consists of four emission bands: (i) a weak UV emission band centered at 403.50 nm, (ii) two weak blue-green bands ... Then the optical property of the products was studied The photoluminescence spectra indicated a weak emission peak at UV wavelength and a strong green band for submicro- and microrods and a strong...
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fabrication and optical properties of ordered sea urchin-like zno
... SEM images, TEM image, HRTEM image and SAED pattern of the sea urchin-like ZnO nanostructures are presented in Fig Fig 2a and b displays the low magnification and high magnification SEM images of ... are assembled by a central nucleus and many needlelike ZnO which grow radially from the nucleus The TEM image in Fig X-ray diffraction pattern (a) and UV–visible optical absorption characteristics ... X-ray diffraction system (SIEMENS D5000) UV–visible optical absorption was measured by UV–visible spectrophotometer (Beijing,TU-1901) Results and discussion Fig 1a shows the XRD pattern of the...
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introduction to electromagnetic compatibility (wiley series in microwave and optical engineering)
... in electric circuit analysis, signals and systems, electronics, and electromagnetic fields The text builds on those basic skills, principles, and concepts and applies them to the design of modern ... (1) the increasing speeds and use of digital electronics in today’s world and (2) the virtual worldwide imposition of governmental limits on the radiated and conducted noise emissions of digital ... in use and importance FORTRAN programs are described here and in Appendix C that compute these parameters very accurately for ribbon cables, PCB land structures, coupled microstrip lines, and coupled...
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synthesis and optical properties of au-ag alloy nanoclusters with controlled composition, p26
... shape of those nanoparticles, optical absorption spectra give a quick and gross idea on their shapes and sizes In this study we used TEM, HREM and HAADF, along with optical absorption spectroscopy ... alcohol [21] On the other hand, Au-Ag bimetallic nanoparticles show different optical responses for alloy and core-shell configurations, even when they have same Au and Ag contents Au-Ag alloy ... control of structural type and composition of bimetallic nanoparticles comprised of Ag and Au have been a subject of considerable interest; and the developed of simple and versatile methods for...
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