Download or read book Dual Polarization Two Port Fiber Optic Gyroscope written by Zinan Wang and published by Springer. This book was released on 2017-03-23 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis demonstrates and investigates novel dual-polarization interferometric fiber-optic gyroscope (IFOG) configurations, which utilize optical compensation between two orthogonal polarizations to suppress errors caused by polarization nonreciprocity. Further, it provides a scheme for dual-polarization two-port IFOGs and details their unique benefits. Dual-polarization IFOGs break through the restriction of the "minimal scheme," which conventional IFOGs are based on. These innovative new IFOGs have unique properties: They require no polarizer and have two ports available for signal detection. As such, they open new avenues for IFOGs to achieve lower costs and higher sensitivity.
Download or read book Dual Polarization Fiber Optic Gyro written by Joel G. Hanse and published by . This book was released on 1981 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents results from a Naval Research Laboratory-sponsored investigation of dual polarization gyros. The dual polarization concept is a new fiber optic gyro configuration designed to provide independence from principal gyro bias error sources. Experimental results indicate an order of magnitude improvement in bias error performance. Important results from a new modeling capability are also included. In addition to examination of dual polarization gyro performance, a number of fiber gyro configurations have been examined. Results of this effort include development of an improved understanding of fiber optic depolarizers and identification of a previously unreported error team for gyros using 3 dB distributed couplers. (Author).
Download or read book Sensors Measurement and Intelligent Materials written by Yun Hae Kim and published by Trans Tech Publications Ltd. This book was released on 2013-02-13 with total page 3310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). The papers of this 4 volumes set on "Sensors, Measurement and Intelligent Materials" are grouped as follows: Chapter 1: Intelligent Materials and Structures; Chapter 2: Sensors; Chapter 3: Techniques for Measurement, Detection and Monitoring; Chapter 4: Data Acquisition, Data Mining and Data Processing; Chapter 5: Automation and Control. Technologies and Engineering; Chapter 6: Intelligent System; Chapter 7: Mechatronics; Chapter 8: Microelectronics, Electronics and Electrical. Circuits and Devices; Chapter 9: Network Engineering and Communication Technology; Chapter 10: Applied Computing and Information Technologies; Chapter 11: Materials and Processing Technologies; Chapter 12: Applied Mechanics in General Mechanical Engineering and Construction.
Download or read book The Fiber Optic Gyroscope Third Edition written by Herve C. Lefevre and published by Artech House. This book was released on 2022-01-31 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: This landmark work – considered by many in the field to be THE reference on fiber-optic gyroscopes (FOGs) – provides you with a complete and thorough system analysis of the FOG and remains unmatched by any other single source. Now in its third edition, this fully updated and authoritative book: Gives you access to all the details you need to know about optics, single-mode fiber optics, and integrated optics to fully grasp the design rules of the fiber-optic gyroscope Helps you understand the concepts that have emerged as the preferred solutions to obtain a practical device Guides you through the advances that have occurred in the last seven years since the previous edition was published and how they are implemented in the current FOGs Drawing on 45 years of research and development, The Fiber-Optic Gyroscope, Third Edition, features new content on the relationship between white-noise power spectral density and random walk; Allan variance; testing with optical coherence domain polarimetry; a new simple mechanical model of the thermally induced stresses and related strains in the sensing coil; simple viewing of the reduction of the Shupe effect with symmetrical windings; and comments about dispersion and birefringence dispersion. The book contains over 350 illustrations (including 70 new figures) and many helpful appendixes, and gives you everything you need to understand the fiber gyro. The author is a leading expert in this field and is one of the early pioneers of the practical optical architecture and signal processing technique that is universally used in today’s FOGs. This is a must-have reference for anyone working with FOGs, from students and academics learning about the device, to optoelectronics engineers and professionals needing to stay abreast of the current concepts and recent advances.
Download or read book The Fiber Optic Gyroscope Second Edition written by Herve C. Lefevre and published by Artech House. This book was released on 2014-10-01 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by one of the field’s leading experts, this landmark reference presents a thorough system analysis of the fiber-optic gyroscope (FOG), describing the concepts that have emerged as the preferred solutions for obtaining a practical device. This book’s first edition was published in the early 1990’s. If the basic design rules of the FOG have remained unchanged, the technology has certainly matured, and the expectations presented in the first edition have been largely exceeded. This second edition is updated throughout, featuring new content on Allan variance; testing with optical coherence domain polarimetry; the Shupe effect; and rare-Earth doped fiber ASE sources. In addition, brand new comprehensive appendixes cover the optics, single-mode fiber optics, and integrated optics necessary to understand the fiber gyro and provide an appropriate vocabulary for communicating with electronic component designers.
Download or read book A Polarization maintaining Hollow core Fiber optic Gyroscope written by Therice Ann Morris and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the success of the fiber-optic gyroscope as the world's most commercially successful fiber sensor, improving fiber-optic gyroscope (FOG) technology, particularly with regards to temperature stability, is increasingly important. Commercial FOGs have been able to meet these requirements through extensive engineering, including temperature modeling and control to reduce the drift caused by temperature-gradient variations in the sensing coil (the Shupe effect) and mu-metal shielding to reduce the drift caused by exposure to varying magnetic fields coupled to the Faraday effect. The use of a hollow-core fiber (HCF) in a fiber-optic gyroscope offers an attractive way to ease these and possibly other engineering requirements because in an HCF light travels mostly in air, where these two effects are greatly reduced. We propose and test the first implementation of a polarization-maintaining HC FOG. The HCF coil ends are directly attached to the multi-function integrated optics LiNbO3 chip, overcoming what has long been one of the biggest challenges in implementing a hollow-core fiber in this sensor. To fully characterize this FOG it was interrogated, in turn, by a broadband supersluorescent fiber source (SFS), a laser, and a laser broadened with Gaussian white noise. The SFS-driven HC FOG has a measured rotation-rate resolution comparable to that of a commercial FOG utilizing a solid-core fiber, and 3.4 times lower measured drift than previously reported for a hollow-core FOG. With a longer coil or a larger coil diameter, these values could approach the requirements for aircraft navigation. A theoretical model of optimal phase biasing was developed to further improve these results. This thesis will show that the noise of the broadened-laser-driven HC FOG is then dominated by a new effect, which is scattering mediated by coupling to the highly scattering surface modes of the HCF. Previous models of the backscattering drift in FOGs had uncertain convergence for broad source linewidths due to computation requirements. We present a new model of backscattering drift that solves the previous convergence issues by introducing a coherence function. This model was important for identifying the source of drift in the HCF FOG driven by light sources of various linewidths, and it was used to verify the backscattering coefficient for the HCF and confirm the existence of highly scattering surface modes.
Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Erbium Doped Superfluorescent Fiber Sources for the Fiber Optic Gyroscope written by Dario G. Falqiuer and published by . This book was released on 2000 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Fiber Sensor Technology written by L.S. Grattan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in optical fiber sensors The field of optical fiber sensor technology is one that continues to expand and develop at a rate that could barely have been predicted a few years ago. The wealth of publications appearing in the technical literature and the burgeoning number of papers presented at the now well-established series of national and international conferences, which are attended by a wide selection of technically qualified optoelectronics professionals, gives a clear indication of both the range and scale of the devices and applications now seen in the subject. Such a rapid expansion makes it very difficult for the scientist and engineer, under pressure to be both informed and effective for an employer, to attend all these meetings, selectively read the appropriate literature and be able quickly to gain the knowledge in those specific areas which will give the best advantage for the work in hand. To that end, this volume has been planned and carefully designed to provide an essential overview, and detailed specific information, on those novel and exciting aspects of optical fiber sensor technology that have recently emerged, with particular focus on the devices and the exciting applications of this part of optoelectronic technology in the vast international measurement and instrumentation area.
Download or read book Orthogonal Polarization Fiber Optic Gyroscope with Improved Bias Drift written by Melody Ann Lynch and published by . This book was released on 1999 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Fiber Rotation Sensing written by William K. Burns and published by Academic Press. This book was released on 2012-12-02 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Fiber Rotation Sensing is the first book devoted to Interferometric Fiber Optic Gyros (IFOG). This book provides a complete overview of IFOGs, beginning with a historical review of IFOG development and including a fundamental exposition of basic principles, a discussion of devices and components, and concluding with industry reports on state-of-the-art activity. With several chapters contributed by principal developers of this solid-state device, the result is an authoritative work which will serve as the resource for researchers, students, and users of IFOGs. State-of-the-art industrial activity reports from British Aerospace, Hitachi, Japan Aviation Electronics, Litton Mitsubishi, and Photonectics Excellent tutorial material to promote basic understanding as well full coverage of advanced theoretical and practical aspects of IFOGs Developments allowing for the upgrading of IFOGs from a sensitive laboratory interferometer to a practical rotation sensor The integration of IFOGs with other sensors into complete systems A discussion of alternative forms of IFOGs Present devices, applications, and projected future users
Download or read book Fiber Optic Gyros written by Eric Udd and published by . This book was released on 1987 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optics Letters written by and published by . This book was released on 1996 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trends in Optical Fibre Metrology and Standards written by Olivério D.D. Soares and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre Optics has gained prominence in: telecommunications, data transmission and distribution, cable television networks, sensing and control, light probing and instrumentation. The 1990's shows an increased expansion of optical fibre networks which respond to the rapid growth on a world scale of long distance trunk lines combined with a family of emerging optical based services in which fibre-to-the-home will have the greatest impact. There is already evidence that optical communications are moving toward higher bit-rates, wavelength transparency and irrelevance of signal formats. The rate of change in fibre optics and the emergence of new services will be a mere consequence of economics. The actual increasing of cost and the demand for high-date-rates or large bandwidth per transmission channels, and the lack of available space in the congested conduits in urban areas, strongly favour the technological change to fibre optics. The recognised advantages of fibre optic technologies and the unchallenged potential to respond to future needs requires the inclusion of fibre optics networking into new installations. Concomitantly, current progress in the field of optical fibres (optical fibre amplifiers, optical fibre switching, WDM, fibre gratings, etc.) unfold major technical advances and greater flexibility in the designs and engineering of networks, optical fibre components and instrumentation. The explosion of growth in fibre sensors, fibre probes and the myriad of fibre based components shows that we are only using a fraction of optical fibre potential.
Download or read book Optical Sensing in Power Transformers written by Jun Jiang and published by John Wiley & Sons. This book was released on 2020-12-14 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cutting-edge, advanced level, exploration of optical sensing application in power transformers Optical Sensing in Power Transformers is filled with the critical information and knowledge on the optical techniques applied in power transformers, which are important and expensive components in the electric power system. Effective monitoring of systems has proven to decrease the transformer lifecycle cost and increase a high level of availability and reliability. It is commonly held that optical sensing techniques will play an increasingly significant role in online monitoring of power transformers. In this comprehensive text, the authors—noted experts on the topic—present a scholarly review of the various cutting-edge optical principles and methodologies adopted for online monitoring of power transformers. Grounded in the authors' extensive research, the book examines optical techniques and high-voltage equipment testing and provides the foundation for further application, prototype, and manufacturing. The book explores the principles, installation, operation, condition detection, monitoring, and fault diagnosis of power transformers. This important text: Provides a current exploration of optical sensing application in power transformers Examines the critical balance and pros and cons of cost and quality of various optical condition monitoring techniques Presents a wide selection of techniques with appropriate technical background Extends the vision of condition monitoring testing and analysis Treats condition monitoring testing and analysis tools together in a coherent framework Written for researchers, technical research and development personnel, manufacturers, and frontline engineers, Optical Sensing in Power Transformers offers an up-to-date review of the most recent developments of optical sensing application in power transformers.
Download or read book Optics Index written by and published by . This book was released on 1990 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Materials And Laser Spectroscopy A Satellite Meeting Of Iqec 88 written by Zhijiang Wan and published by World Scientific. This book was released on 1989-03-01 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents:Laser Site Spectroscopy of Transition Metal Ions in Glass (Gan Fuxi & Liu Huimin)Pair-Pumped Upconversion Solid State Lasers (Stephen C Rand)CW Upconversion Laser Action in Neodymium and Erbium Doped Solids (R M Macfarlane et al)A Critical Review of High-Efficiency Crystals for Tunable Lasers (J T Lin)The Growth and Properties of BaTiO3 Crystals (Wu Xing et al)Potassium Titanyl Phosphate (KTP): Properties and New Applications (J D Bierlein)Growth, Spectroscopic Properties and Applications of Doped LiNbO3 Crystals (Liu Jiancheng)Recent Advances in Photorefractive Nonlinear Optics (Pochi Yeh)Nonclassical Radiation From Single-Atom Oscillators (Herbert Walther)Laser Spectroscopic Studies of Molecules in Highly Excited Vibrational State (Tadao Shimizu et al)Kinetic Processes in the Electron-Beam Pumped KrF Laser (H Takuma et al)Sum-Frequency Generation For Surface Vibrational Spectroscopy (P Guyot-Sionnest et al)Optical Studies of Molecule/Surface Interactions (M M T Loy et al)Femtosecond Photon Echoes (C V Shank et al)Laser Cooling and Trapping of Atoms (Steven Chu et al)Observation of the Motion of Slow Atoms in a Standing Wave Field (Wang Yuzhu et al)and others Readership: Applied physicists.