Development of all digital interferometric closed-loop fiber optic gyroscope with ytterbium doped superfluorescent fiber source

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2023-1-23

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Keskin, Hakan

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In this thesis, the development of a Fiber Optic Gyroscope (FOG) driven by Ytterbium (Yb) doped Amplified Spontaneous Emission (ASE) Source that has broad spectral bandwidth allowing for sensitive measurements is investigated. The first emphasis is given to the development of a Yb-doped ASE. This ASE operates at around 1μm wavelength with broad spectral bandwidth. Different ASE configurations such as single-pass forward (SPF), single-pass backward (SPB), double-pass forward (DPF), and double-pass backward (DPB) are compared in terms of spectral bandwidth, power, central wavelength stability and power stability. Additionally, mean wavelength stability is measured between the temperature of -40/+60°C to assess potential applications. Afterward, a 1μm all-fiber closed-loop optical gyroscope is demonstrated. Stable operation is achieved by using a fiber coil using PM fiber and the most stable ASE in terms of power and spectrum. Finally, theoretical and experimental results are compared including angular random walk (ARW) sources of a FOG.

Subject Keywords

Superfluorescent, Ytterbium, Fiber, Gyroscope, ASE

URI

https://hdl.handle.net/11511/102020

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

H. Keskin, “Development of all digital interferometric closed-loop fiber optic gyroscope with ytterbium doped superfluorescent fiber source,” Ph.D. - Doctoral Program, Middle East Technical University, 2023.