Transmisi Suara Berbasis Laser Hijau Dengan Panjang Gelombang 532 nm

Dwiputra, Adnan Wahyu (2021) Transmisi Suara Berbasis Laser Hijau Dengan Panjang Gelombang 532 nm. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini, dilakukan eksperimen transmisi audio berbasis laser dengan menggunakan panjang gelombang 532 nanometer. Penelitian ini bertujuan untuk membuat rancangan sistem transmisi suara menggunakan laser, mengetahui hubungan antara tegangan input dan intensitas sinar laser, dan membandingkan frekuensi output terhadap frekuensi input. Terdapat tiga pengukuran, yaitu pengukuran intensitas sinar dan jarak, pengukuran tegangan diode laser dan intensitas, dan pengukuran frekuensi output terhadap frekuensi input. Sinyal input audio dari sumber dimodulasikan dan ditransmisikan melalui media sinar laser. Sinar laser kemudian ditembakkan ke rangkaian penerima yang dapat mendemodulasikan sinyal yang kemudian dikirimkan ke perangkat output berupa speaker. Dari penelitian ini kemudian dapat dibandingkan frekuensi output terhadap frekuensi input. Dari penelitian diperoleh bahwa transmisi suara nirkabel dapat dilakukan dengan menggunakan laser hijau dengan panjang gelombang 532 nm, dengan nilai error tertinggi yaitu 38,70% pada frekuensi 125 Hz dan nilai error terendah yaitu 0,07% pada frekuensi 500 Hz. =========================================================================================================== In this study, a laser-based audio transmission experiment was conducted using a wavelength of 532 nanometers. This study aims to design a sound transmission system using a laser, determine the relationship between the input voltage and the intensity of the laser light, and compare the output frequency to the input frequency. There are three measurements, namely measuring the light intensity and distance, measuring the laser diode voltage and intensity, and measuring the output frequency against the input frequency. The audio input signal from the source is modulated and transmitted via the laser beam medium. The laser beam is then fired into the receiver circuit which can demodulate the signal which is then sent to the output device in the form of a speaker. From this research, the output frequency against the input frequency can be compared. From the research, it was found that wireless voice transmission can be done using a green laser with a wavelength of 532 nm, with the highest error value of 38.70% at a frequency of 125 Hz and the lowest error value of 0.07% at a frequency of 500 Hz.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Laser, Frequency, Modulation, Demodulation; Laser, Frekuensi, Modulasi, Demodulasi
Subjects: Q Science
Q Science > QC Physics
Divisions: Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User: Adnan Wahyu Dwiputra
Date Deposited: 06 Mar 2021 02:51
Last Modified: 06 Mar 2021 02:51
URI: https://repository.its.ac.id/id/eprint/83562

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