Secondary-phase-modulation method for open-loop fiber-optic gyroscopes

Komachiya, Masahiro; Sonobe, Hisao; Oho, Shigeru; Ohbu, K.; Yuhara, Toshiya; Iizuka, Hidehiro

doi:10.1364/ao.35.003719

Cited by 4 publications

(6 citation statements)

References 1 publication

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“…Then, the photodetector collects the produced interferometric signal. The phase modulator is used to apply a sinusoidal or square-wave dynamic phase bias to light path, thus increasing the sensitivity of the sensor [15]. When modulation frequency of phase bias is high enough, electronic noise is avoided.…”

Section: Ifog: Basic Structure and Configurationsmentioning

confidence: 99%

IFOG and IORG Gyros: A Study of Comparative Performance

Menéndez¹

2020

Gyroscopes - Principles and Applications

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In this revision work, firstly classical structure and main performance parameters of interferometric fiber-optic gyroscope (IFOG) and integrated optics passive resonator gyroscope (IORG) are reviewed. Then, the main advanced models and performance parameters of these two types of rotation-rate inertial sensors are described, and finally the design trends of both types are analyzed. Taking as reference the performance parameters analyzed above, a comparative analysis between manufactured IFOG and IORG units of close geometrical dimensions is realized. This analysis leads ranking these devices into six classical levels of inertial performance: strategic grade, navigation grade, high-end tactical grade, tactical grade, industrial low-end tactical grade, and consumer grade. This classification allows to deduce the main application areas of both kinds of devices. This way, the impact of these sensors in applications such as aeronautics, aerospace navigation, mechanical micro-fabrication, tactical weapons, or, more recently, robotics can be disclosed.

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Section: Ifog: Basic Structure and Configurationsmentioning

confidence: 99%

IFOG and IORG Gyros: A Study of Comparative Performance

Menéndez¹

2020

Gyroscopes - Principles and Applications

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“…Although both interferometers can be built according to the basic principle, the interferometer employed in bulk optics was modified of its traditional configuration, because with these changes a remarkable increment in its sensibility is achieved. Knowing that the system don't depend on the optical path that beams follow in counterpropagation, but it depends of the area that contains; a modification that help in the appropriate distribution of the elements of the system was made [20].…”

Section: Implementation Workmentioning

confidence: 99%

“…Nevertheless many other factors intefere to be able to have a greater sensibility in the fiber optic interferometer [18]. The research of high sensibility in the case of the fiber optics interferometer has been made for many years [19].…”

Section: Introductionmentioning

confidence: 99%

A Simple Detection System for Two Classical Sagnac Interferometer Configurations

Sandoval-Romero¹,

Pinzón-Escobar²

2012

ENG

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Two interferometric systems were built, one in bulk optics and other one in fiber optics for showing the instrumentation stage designed for these devices, supported in a photodetector. This stage has a circuit for amplification, analog filtering and software for single channel data acquisition and digital filtering. Based on the Sagnac effect in bulk optics and in fiber optics, the Sagnac interferometer has many applications, nevertheless the methods of construction, design and instrumentation for the sensors used on both types of interferometers are well-known, but very common or general form, for this reason this work approaches some of the methodologies for the design and construction of these devices, obtaining higher sensitivity and better contribution in its respective interferometric paths. We used the simplest design for each interferometer, proposing the best detection limit for each one; to obtain the previous thing, we implement the three previous steps: amplifiers and analogous filters, software for filtering the digital sign. The data acquisition method used to allow us to obtain faster results, using the card of a PC, getting real time measurements and digital processing of the signal

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“…Broadband fiber optic light sources have important uses in spectral analysis, fiber optic communication, fiber optic sensing, etc. [1]. The development of fiber amplifiers and lasers has also led to the creation of spontaneous broadband emission (ASE) light sources based on the amplification of optical fibers doped with rare earth elements and the first pioneering use of erbium-doped ASE light sources in fiber optic gyroscopes at Stanford University in 1989 [2].…”

Section: Introductionmentioning

confidence: 99%

“…The second type is the quantum dot fiber amplifier with liquid, or liquid solidified fiber core. In recent years, UV gel has been used as the core substrate, and PbSe or PbS colloidal quantum dots are mixed and pumped into the hollow core fiber to form a quantum dot fiber [1]. The third type is the quantum dot fiber amplifier with a glass core substrate.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of Output Spectrum of Quantum Dot Doped Broadband Fiber Light Source in 1200-1700 nm Range

Hong¹

2023

HSET

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In the face of the demand for increased communication capacity of fiber optic communication and the requirement for accuracy and stability of various fiber optic devices, the light source, as one of the key devices, is also required to have higher bandwidth and output power. In this paper, this study model and simulate the output spectrum of a quantum-doped optical fiber light source in the range of 1200nm to 1700nm. The rate equation and power propagation equation are established based on the energy level structure of quantum dots. MATLAB solves the numerical model to obtain the output spectra of quantum dot-doped optical fiber light source under different variables. The fiber length, doping concentration, and pumping optical power was further varied to study the effects of several variables on the peak output spectrum. The results show that the fiber length and doping concentration increase and then decrease the peak value of the output spectrum while the pump power increases the peak value of the output spectrum. A pump power of 200 mW was chosen to obtain good experimental results at a fiber length of 3 m and a doping concentration of . The maximum output power is 4.9 mW, and the spectral line width is about 80 nm. The maximum output power is 69 mW, and the spectral line width is about 100 nm at a fiber length of 4 m and a doping concentration of with a pump power of 400 mW.

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Secondary-phase-modulation method for open-loop fiber-optic gyroscopes

Cited by 4 publications

References 1 publication

IFOG and IORG Gyros: A Study of Comparative Performance

IFOG and IORG Gyros: A Study of Comparative Performance

A Simple Detection System for Two Classical Sagnac Interferometer Configurations

Modeling and Simulation of Output Spectrum of Quantum Dot Doped Broadband Fiber Light Source in 1200-1700 nm Range

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