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The fabrication of fiber Bragg gratings

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dc.contributor.advisor Plant, Thomas K.
dc.creator Stump, Kurt
dc.date.accessioned 2012-08-30T17:42:58Z
dc.date.available 2012-08-30T17:42:58Z
dc.date.copyright 2000-06-30
dc.date.issued 2000-06-30
dc.identifier.uri http://hdl.handle.net/1957/33086
dc.description Graduation date: 2001 en_US
dc.description.abstract Fiber Bragg gratings have become an important element in the fields of telecommunications and fiber optical sensing. Their small size, light weight and high tunability have made them ideal for many unique applications. In this paper the fabrication of these devices is investigated. Following a review of current literature and a discussion of the mechanisms underlying the photosensitivity of optical fibers, a new technique for writing fiber Bragg gratings is presented. This technique uses a diode-pumped Nd:YAG laser operating at 266 nm with pulse energies up to 137 μJ per pulse to write high quality gratings in standard optical fiber. This technique allows for the writing of variable wavelength gratings using a standard diffractive optical element (phase mask). The new technique has much lower setup and laser stability requirements than the conventional methods of writing variable wavelength fiber Bragg gratings. Furthermore, it is found to be very tunable and extremely robust, allowing for extended writing times. A preliminary study of the time evolution of the writing process is also presented. It is evident that the process of grating inscription is very complicated and is not always adequately described by current models. In addition. it appears that the process is strongly dependent upon pulse energy and is accelerated by simultaneous heating of the fiber with a C0₂ laser and by heating due to the writing laser. A brief study of the thermal stability of different gratings is then given to determine some of the thermal stability properties of the fiber Bragg gratings written at OSU. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Fiber optics en_US
dc.subject.lcsh Diffraction gratings en_US
dc.title The fabrication of fiber Bragg gratings en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Physics en_US
dc.degree.level Master's en_US
dc.degree.discipline Science en_US
dc.degree.grantor Oregon State University en_US
dc.description.digitization File scanned at 300 ppi (Monochrome, 8-bit Grayscale, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. en_US
dc.description.peerreview no en_us

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