dorsal/arxiv
View SchemaDigital Spectrometry Signal Treatment Applied to a Fiber Optic Resonant Gyroscope for Rate Measurements
| Authors | R. T. Almeida, O. B. Campos, J. M. Magalhaes, J. F. M. Mendes, M. C. Carvalho, W. V. Santos, G. G. Filho, R. C. B. Allil |
|---|---|
| Categories | |
| ArXiv ID | physics/0305091 |
| URL | https://arxiv.org/abs/physics/0305091 |
Abstract
The FORG (Fibre Optic Resonant Gyroscope) opeeration principle uses a recirculating ring resonant cavity to get a rotation-induced Sagnac effect enhancement (cited by Ezekiel and Balsamo). It grants to a FORG a comparable sensitivity in relation an I-FOG (Interferometric Fibre Optic Gyroscope)that has the fiber lenght equal a half of finesse factor times longer. Other advantages is despite of thermal drift because the FORG uses less quantity of fibre than the I-FOG, giving to the first less thermal drift sensitivity than the last. The proposal of this work is to show a applied to a FORG technique that simplifies the signal treatment, employing all digital setup, resulting in a maximally flat scale factor. In this investigation are presented over the simulations results, employing the modified digital FM spectrometry techniques by decimation and interpolation techniques over a ring resonator that pursuit a 10 meters SM-PM lenght fiber coil and 10 centimeters of diameter, with a 1550 nanometers laser source. The advantages of these techniques are to simplify the electronic circuitry, offering an upgrade facility, using only one DSP (Digital Signal Processor), realizing all needed functions. The investigation of this method is based in a optical field switching scheme and digital frequency domain spectrometry.
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"abstract": "The FORG (Fibre Optic Resonant Gyroscope) opeeration principle uses a\nrecirculating ring resonant cavity to get a rotation-induced Sagnac effect\nenhancement (cited by Ezekiel and Balsamo). It grants to a FORG a comparable\nsensitivity in relation an I-FOG (Interferometric Fibre Optic Gyroscope)that\nhas the fiber lenght equal a half of finesse factor times longer. Other\nadvantages is despite of thermal drift because the FORG uses less quantity of\nfibre than the I-FOG, giving to the first less thermal drift sensitivity than\nthe last. The proposal of this work is to show a applied to a FORG technique\nthat simplifies the signal treatment, employing all digital setup, resulting in\na maximally flat scale factor. In this investigation are presented over the\nsimulations results, employing the modified digital FM spectrometry techniques\nby decimation and interpolation techniques over a ring resonator that pursuit a\n10 meters SM-PM lenght fiber coil and 10 centimeters of diameter, with a 1550\nnanometers laser source. The advantages of these techniques are to simplify the\nelectronic circuitry, offering an upgrade facility, using only one DSP (Digital\nSignal Processor), realizing all needed functions. The investigation of this\nmethod is based in a optical field switching scheme and digital frequency\ndomain spectrometry.",
"arxiv_id": "physics/0305091",
"authors": [
"R. T. Almeida",
"O. B. Campos",
"J. M. Magalhaes",
"J. F. M. Mendes",
"M. C. Carvalho",
"W. V. Santos",
"G. G. Filho",
"R. C. B. Allil"
],
"categories": [
"physics.ins-det"
],
"title": "Digital Spectrometry Signal Treatment Applied to a Fiber Optic Resonant Gyroscope for Rate Measurements",
"url": "https://arxiv.org/abs/physics/0305091"
},
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