Progress in fiberoptic gyro development and applications. Fiber optic gyroscopes free download as powerpoint presentation. Integrated optical driver for interferometric optical gyroscopes. The rotation of the plane in which the optical fiber lies induces a phase difference between. The two halves of the split beam travel in opposite directions in a coil of fiber optic cable as long as 5 km. Suggestions on product use, handling and installation are given. Keywordsintegrated optics, gyroscopes, silicon photonics i.
Imo and imohsc certified, it provides all the necessary data for demanding navigation and control applications at a fast rate and with precise timestamping. An overview of optical gyroscopes theory, practical aspects, applications and future trends by adi shamir 1 may 16, 2006. A novel scheme for a double closedloop resonant fiber optic gyroscope rfog employing a highperformance transmissive kagome hollowcore photonic crystal fiber hcpcf resonator is proposed. Fiber optic gyroscopes fogs represent an important development in the field of inertial sensors and are now considered an alternative technology to mechanical and ring laser gyroscopes for inertial navigation and control applications. Saabs fiber optic gyros, fog, are designed to provide maximum stabilisation in tough environments. Integrated optical driver for interferometric optical gyroscopes minh a.
Multifunction integrated optic chip for gyroscope y. Ppt optical gyroscope powerpoint presentation free to. Miniaturizable high performance fiber optic gyroscopes for. Fiber optics gyroscopes are widely used for remotely operated vehicle guidance and industrial applications. The chip was successfully interrogated with a fiber coil to realize an openloop ifog. Pdf the threeaxis closedloop fiber optic gyroscopes are described. Fiber optic gyroscope pdf theory gyroscope optical fiber scribd. Like the ring laser gyroscope, it makes use of the sagnac effect. Description the supertac imu integrates three fiber optic gyros that exceed tactical grade performance with three highaccuracy microelectromechanical systems mems accelerometers and.
A fibre optic gyroscope fog senses changes in orientation using the sagnac effect, thus performing the function of a mechanical gyroscope. Design and construction of a simple sagnac interferometer fiber optic gyroscope fog capable of serving as a rotation detector. Fiber optic rotation sensors or fiber optic gyroscopes with the sagnac effect for rotation. The ongoing development and engineering effort is now concentrating on miniaturized multipleaxes solutions. Ofs is an industry leader in optical fiber design or modification. With a 7 year legacy of winding all types of precision optical fiber coils, idealphotonics has the coil winding business unit with a team of highly experienced scientists, engineers, and winders, together capable of winding the best in optical fiber coils in accordance with customers requirements.
However its principle of operation is instead based on the interference of light which has passed through a coil of optical fibre, which can be as long as 5 km. Fiber optic sensors fundamentals and applications, fourth edition, 2014 available at. Bowers department of electrical and computer engineering, university of california, santa barbara, ca. Protonexchanged linbo 3 integrated optic circuit very high polarizer rejection manufactured by ixblue. Ifog coil winding quadrupole wet, dry, flanged, hubbed or freestanding. How to build a sagnac interferometer fiber optic gyroscope fog doug marett 2010 our instructional video on youtube. Chapter 3 the interferometric fiber optic gyro ifog 3. Levi1 1istituto nazionale di ricerca metrologica inrim, strada delle cacce 91, torino 105, italy 2politecnico di torino, corso duca degli abruzzi 24, torino 10129, italy corresponding author. Read online miniaturizable high performance fiber optic gyroscopes for. Quadrans is a fully strapdown, fiber optic gyrocompass and attitude reference system. Nonstationary dynamic stochastic error analysis of fiber. Largearea fiberoptic gyroscope on a multiplexed fiber.
Our longstanding leadership in the development of highlyaccurate defense and military grade fiber optic components and systems has paved the way for. A fiber optic gyroscope also uses the interference of light to detect mechanical rotation. The company has a unique combination of all the technologies essential for fog production which considerably cuts net cost of the final devices. The first integrated optical driver chip for fiber optic gyroscopes. All components are made on a single fiber length using jointless manufacturing technology. Fiber optic gyros with very low drift rates have become available and affordable. Osa transmissive resonant fiberoptic gyroscope employing. The first integrated optical driver chip for fiber optic. Gps denied navigation precise targeting lineofsight stabilization. It became very successful in the 80s and has since. The relative phase difference is the sagnac phase shift the sagnac effect in vacuum.
Fiber optic rate gyros as replacements for mechanical gyros. Our mission is to build the smallest and lightest navigationgrade and strategicgrade inertial systems. Mar 26, 2019 one test has the gyro stationary, and the other test rotates the gyro ccw at 7. Fiber optic gyroscopes gyroscope inertial navigation. They feature solidstate, lowdrift, high shock usability, small size and short startup time and are available as basic single axis fog sensor, 1, 2 and 3axis solutions with analogue or digital outputs. Basics of fiber optics mark curranbrian shirk fiber optics, which is the science of light transmission through very fine glass or plastic fibers, continues to be used in more and more applications due to its inherent advantages over copper conductors. Output operating mode rs type, baud rate, data rate depends on model the and is indicated in the respective datasheet. Yjunction and pair of pushpull lowvoltage phase modulators. Gypro offers high bias stability, low noise and low latency. En300 precision fiber optic inertial measurement unit. Napolitano 102010 fabien napolitano ixsea, an ixblue company chief product development officer 1 introduction this paper is a short analysis of key technological advantages of fiber optic gyroscope fog.
Fiber optical solutions single and threeaxis fogs consist of the one light source at 1550 nm wavelengths superluminescent diode sld, depolarizer, one or three photodetectors, fiber splitters to divide the light into two or three parts, one or three sets of ring interferometers to sense one or three orthogonal angular rate, and signal processing circuits. Fizoptika fiber optic gyroscope fog is a precision yet most miniature fiber optic rotation sensor. Nedaero fiber optic gyroscope fog itarfree maintenance. Since the potential sensitivity of gyroscopes scales with the enclosed area, early on large gyroscopes were conceived and implemented, in particular, one reported by michelson and coworkers in 1925 with enclosed area a 0. How to build a sagnac interferometer fiber optic gyroscope. Fiber optical solution is vertically integrated company specializing in high precision fiber optic gyroscopes fog production.
Fibernetics is a us manufacturer of fiber optic gyroscope fogbased inertial systems. An overview of optical gyroscopes theory, practical aspects. Fizoptika fogs are open loop fiber optic gyroscopes. The fog fiberoptic gyroscope is the result of more than 30 years of research and development and is today. Pdf fiber optic rate gyros as replacements for mechanical gyros. Integrated optical driver for interferometric optical. Motivation an interferometric fiber optic gyroscope is. A novel algorithm based on singular spectrum analysis ssa and augmented nonlinear differentiator and for extracting the useful signal from a noisy measurement of fiber optic gyroscope fog is. In this paper, we describe a fiber optic brillouin ring laser gyro with pushpull modulation by using two optical fiber phase modulators. The data acquisition gyro programmonitor has beendesigned to display real time data a of connected to a pc digital or analog gyroscope on a computer monitor and store data in an output file. Evidence is provided with reference to published documents available on demand see reference list at the end. Because of their low drift rate attention is warranted to sources of errors that were previously considered as of.
The past 30 years of research and development around the world have established the fog as a critical sensor for highaccuracy inertial navigation systems. Fiber optic gyroscope ifog, which utilizes an optical inter. The most promising subsystem is a tactical grade inertial measurement unit with a fiber optic gyro triad as rotation rate sensors. The interference on a sagnac interferometer is proportional to the enclosed area. All books are in clear copy here, and all files are secure so dont worry about it. It comprises fiber optic sensing coil, phase modulator, two fiber optic couplers, fiber crystal polarizer, lightemitting sld module and fiber deadend. The x and y axis readings are irrelevant for this test. Fiber optic gyroscope fog maintenancefree itarfree. The operating principle of any optical gyroscope is the sagnac effect.
Osa singlepolarization fiberpigtailed highfinesse silica. Pdf the presented method, based on the theory and equations of fiber optic gyroscope, gives a possibility to select appropriate. A fibreoptic gyroscope fog senses changes in orientation using the sagnac effect, thus performing the function of a mechanical gyroscope. Mioc150909n 1550nm integrated optical chips y waveguide inputoutput. Pdf fiber optical gyroscope for space applications researchgate. This site is like a library, you could find million book here by using search box in the header. This inline modulation allows a simple system with very easy dither controlling. A looped fibreoptic coil multiplies the effective area by the number of loops. The gypro high performance mems gyroscopes product line has been specifically designed for applications that are more demanding than automotive, while not requiring tactical grade fog fiber optic gyros or dtg dynamically tuned gyros. It comprises fiber optic minimum configuration sensing assembly and analog processing electronics. The fog is a robust, reliable, maintenancefree electro optical device of.
The fiber optic gyroscope is a direct application of the sagnac interferom. The most promising subsystem is a tactical grade inertial measurement unit with a fiber optic gyro. The rlg was demonstrated only a few years after the invention of the laser in 1960, and it is based on heliumneon hene technology. Motivation an interferometric fiber optic gyroscope is formed by three. Miniaturizable high performance fiber optic gyroscopes for small satellites nasa gsfc sttr nnxcg43c cotr kenneth hall 2011 t4. Brillouin fiber optic gyro with pushpull phase modulator.
Emcore has developed the en300 precision fiber optic inertial measurement unit as a higher accuracy inertial system to be form, fit and function compatible with a legacy equivalent, but with better performance needed for. Fiber optic gyroscope pdf theory gyroscope optical fiber. Scope 1 this guide describes fiber optic gyroscope main features. Fiber optic gyroscope fog applications emcores fiber optic gyroscope fog technology is designed for fast, accurate navigation and gyrocompassing, and lownoise lineofsight stabilization. Jianjie zhang, huilian ma, hanzhao li, and zhonghe jin, singlepolarization fiber pigtailed highfinesse silica waveguide ring resonator for a resonant micro optic gyroscope, opt. Some models are equipped withad c circuit and provide digital rate signal via rs232 or rs422 transmitter. One test has the gyro stationary, and the other test rotates the gyro ccw at 7. The core of the openloop fiber optic gyroscope is the fiber optic sensing assembly. Interfaces with single mode polarization maintaining fibers are realized on two facets of the chip. Largearea fiber optic gyroscope on a multiplexed fiber network c. While for mems gyroscopes the reliability issue is still open, and the nmrg, which exploits the shift of the larmor pre.
We use specially designed kagome hcpcfs and a meniscus lens module to form a resonator, whose finesse is 58. The purpose of this article is to provide the nontechnical reader with an overview of. Product description the fizoptika gyro is a complete gyro system which comprises a. Fiber optic gyroscope pdf theory free download as pdf file. A fiber optic gyroscope can be used in aircraft and helicopters, but has also other application fields like ground vehicles, robots, optics or rf antenna stabilization and training simulator stabilization and high dynamical sensor platforms or other industrial purposes. The investor relations website contains information about emcores business for stockholders, potential investors, and financial analysts. An overview of optical gyroscopes theory, practical. The l3 supertac imu bridges the performance gap between tactical grade and navigation grade inertial measurement units in a small, lightweight robust package. Fiber optic gyroscopes fogs use two beams of light which propagate.