CD Tesis

Reflektivitas Serat Kisi Bragg Pada Respirasi Manusia Menggunakan Sistem Konverter Fotodioda Indium Galium Arsenida

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SUMMARY
DIAN PUTRI OKTAVIA, NIM. 2110246788, REFLECTIVITY OF
FIBER BRAGG GRATTING ON HUMAN RESPIRATION USING AN
INDIUM GALIUM ARSENIDE PHOTODIODE CONVERTER SYSTEM,
supervised by Saktioto and Dwi Hanto.
Respiration is a vital process characterized by the exchange of oxygen and
carbon dioxide. Indicators such as respiratory rate are crucial for detecting
pathological conditions, including pneumonia and heart failure. This research aims
to develop a respiratory sensor system based on Fiber Bragg Grating (FBG) as an
innovative alternative to conventional methods. The system utilizes FBG optical
fibers to detect strain and temperature changes due to respiratory activity,
providing a sensitive, safe, and highly electromagnetic environment compatible
solution.
The study used FBG with variations in reflectivity of 30%, 50%, 70%, and
90%. FBGs are installed inside oxygen masks at five different points to monitor
wavelength changes during respiratory activity. The measurement method involves
an optical system with an interrogator and an electrical method using an InGaAs
photodiode converter to convert the optical signal into an electrical signal
visualized in LabVIEW. Respondents were tested in three activities: stillness,
walking, and running. Variations in sensor reflectivity and position in masks were
evaluated to determine sensitivity to respiratory changes. The data is collected in
the form of a graph of wavelength against time.
The results showed that the change in the wavelength of the FBG correlated
with the intensity of respiratory activity. 90% reflectivity results in the highest
sensitivity, and allows for more accurate detection of temperature changes and
strains. The position of the sensor at the centre point of the mask provides the most
linear results, indicating optimal sensitivity. Physical activity, such as running,
produces the greatest strain on the optical fiber. This study proves the potential of
FBG as a precision medical sensor for respiratory monitoring applications.
Keywords: Optical Fiber, Fiber Bragg Gratting, Reflectivity of FBG, Uniform,
InGaAs

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2110246788

Penerbit

Pekanbaru. : Universitas Riau – PASCA– Magister Fisika., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2110246788

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

Magister Fisika

Info Detail Spesifik

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Pernyataan Tanggungjawab

RIDHO

Versi lain/terkait

Lampiran Berkas

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