Desain Sensor Tingkat Kekeruhan Air Menggunakan Bahan Fiber Optik

Pentingnya mengetahui tingkat kekeruhan air terutama dalam aktivitas penggunaan air konsumsi yang berupa air bersih menuntut adanya suatu alat yang digunakan untuk mengukur tingkat kekeruhan air. Pemanfaatan serat optik untuk mengetahui tingkat kekeruhan air dari nilai rugi daya diharapkan dapat menjadi suatu solusi untuk mengetahui tingkat kekeruhan air sebelum digunakan. Penelitian dilakukan dengan mengukur nilai loss daya pada dua ujung serat optik singlemode dan multimode yang dihubungkan dengan fiber coupler, kemudian diukur menggunakan Handheld Light Source dan Optical Power Meter. Fiber coupler dimodifikasi dengan memberi lubang sebesar 1mm pada titik tengah untuk melewatkan air yang diuji. Pengukuran dilakukan dengan kondisi dua ujung optik tanpa jarak, ujung optik diberi jarak sebesar 1mm, ujung optik diberi jarak sebesar 1mm melalui air jernih dan air dengan zat pengeruh berupa tinta. Didapatkan hasil loss pengukuran terbesar pada serat optik singlemode dengan pengeruh warna yellow sebesar 1.9dB. Pada serat optik multimode pengeruh warna yellow sebesar 2.81dB. Hasil grafik dan perhitungan loss daya menggunakan matlab menunjukkan adanya pengaruh penambahan zat pengeruh tinta terhadap daya terukur di OPM. Berdasarkan hasil pengukuran perubahan loss daya tidak konstan pada setiap penambahan 5ml zat pengeruh, dapat dikatakan sensor yang di desain memiliki sensitivitas rendah.

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Desain Sensor Kelembapan Relatif Udara Menggunakan Fiber Optik

Jurnal Jartel Jurnal Jaringan Telekomunikasi ◽

10.33795/jartel.v11i4.235 ◽

2021 ◽

Vol 11 (4) ◽

pp. 214-219

Author(s):

Rangga Pradana Marya ◽

Yoyok Heru Marya ◽

Mila Marya

Keyword(s):

Light Source ◽

Optical Power ◽

Power Meter ◽

Fiber Coupler

Kelembapan udara menjadi faktor penting dalam kehidupan manusia yaitu untuk menjaga kesetabilan kesehatan tubuhyang jugai akan berpengaruh kepada kenyamanan kerja. Diperlukan sensor untuk mengetahui kelembapan dalam ruangan. Alat bisa dikatakan sensor jika memiliki linearitas dan sensitivitas, dalam hal ini fiber optik cocok untuk sensor dikarenakan kemampuan alaminya yang tahan terhadap gangguan elektromagnetik, tahan terhadap suhu tinggi, memiliki sensitivitas dan fleksibelitas yang tinggi, dan dapat digunakan untuk pengukuran dan penginderaan jauh. Penelitian ini menggunakan 2 buah kabel patch core singlemode SC-SC yang dihubungkan dengan fiber coupler yang telah diberi lubang bagian tengahnya dengan diameter 1mm dan diberi jarak antar ferullenya sebasar 0.3mm, 0.6mm, 0.8mm, 1mm. Optical light source digunakan untuk memberikan masukan dengan nilai -7dBm dan nilai keluaran akan dibaca oleh Optical power meter yang nantinya akan diolah menjadi loss daya kemudian dibandingkan dengan nilai kelembapan relatif dari Hygrometer dan akan diperoleh persamaan linearnya. Hasil pengukuran didapatkan semakin jauh jarak antar ferulle maka range yang didapat juga akan semakin panjang. Range terpanjang didapat pada pengukuran jarak 1mm dengan selisih loss daya sebesar 0.2dB dan range terpendek didapat pada pengukuran 0.3mm dengan selisih loss daya sebesar 0.08dB.

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Macrobending Loss Analysis on Singlemode-Multimode-Singlemode Fiber Optic Core

Jurnal Jartel Jurnal Jaringan Telekomunikasi ◽

10.33795/jartel.v9i2.169 ◽

2019 ◽

Vol 9 (2) ◽

pp. 11-15

Author(s):

Sisca Arisya Harry Andhina

Keyword(s):

Light Source ◽

Optical Fibers ◽

Fiber Optic ◽

Optical Power ◽

Single Mode ◽

Fiber Optic Cable ◽

Power Meter ◽

Loss Analysis ◽

Measurement Results ◽

Source Test

Macrobending often occurs in optical fibers that embedded in the ground due to shifting of soil or rocks in the ground causing interference in transmission. In this study used single-mode-multimode-singlemode fiber optic cable connected manually and axially measured using a light source test equipment and optical power meter and the results will be compared. The measurement results obtained the greater value of macrobending losses with the smaller the diameter of the winding, and the greater the number of turns. The highest value of macrobending losses in multimode cables is -1.48dB at 0.5cm diameter with 5 turns, highest value of macrobending losses on single mode cables is -12.73dB at 0.5cm diameter with 5 turns, lowest value of macrobending losses for multimode cables is -0.44dB at 5cm diameter with 1 twist, lowest macrobending losses in singlemode cables is -1.69dB at 5cm diameter with 1 twist. While the value of macrobending losses on axially connected SMS cables shows the highest value of macrobending losses on multimode cables is -1.12dB in diameter of 0.5cm with 5 turns, highest value of macrobending losses on singlemode cables is -1.18dB at diameter of 0.5cm with 5 turns, lowest value for macrobending losses on multimode cables is -0.66dB at 5cm in diameter with 1 twist, the smallest value for macrobending losses on singlemode cables is -0.27dB at 5cm diameter with 1 twist . The measurement results also showed that the macrobending losses of manually connected SMS cables were greater than the macrobending losses of axially connected SMS cables.

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Desain sensor massa menggunakan metode macrobending fiber optic

JURNAL ELTEK ◽

10.33795/eltek.v19i1.288 ◽

2021 ◽

Vol 19 (1) ◽

pp. 52

Author(s):

Mochammad Junus ◽

Yoyok Heru Prasetyo

Keyword(s):

Optical Fiber ◽

Light Source ◽

Data Transmission ◽

Fiber Optic ◽

Measurement Data ◽

Optical Power ◽

Sensor Data ◽

Mass Sensor ◽

Pressure Losses ◽

Power Meter

Kecepatan dalam hal pengiriman data dan komunikasi merupakan hal terus menerus harus diperbaiki dalam era ini. Beberapa permasalahan dapat timbul karena adanya keterlambatan pengiriman data baik itu bertujuan untuk komunikasi atau pengiriman data pengukuran untuk keperluan tertentu. Salah satu solusi yang dapat di lakukan adalah dengan menggunakan fiber optik. Fiber optik kerap digunakan karena keunggulannya dalam kecepatannya dalam hal komunikasi dan pengiriman data. Saat ini, selain untuk berkomunikasi, fiber optik juga banyak dikembangkan di berbagai keperluan. Salah satunya adalah dalam pengiriman data sensor. Penelitian ini mengangkat topik permasalahan yaitu bagaimana mendesain sebuah sensor massa, dengan menggunakan fiber optik sebagai sensor massa dengan memanfaatkan metode macrobending. Kabel yang digunakan pada penelitian ini menggunakan tipe patch core singlemode FC to FC yang dililit dengan variasi 1,3,5,7, dan 9 kali lilitan pada selang elastis berdiamter ¼ inchi, ½ inchi, 5/8 inchi, ¾ inchi dan 1 inchi dengan massa 0,1 Kg- 10 Kg dengan range 200gram. Untuk input menggunkan OLS (Optical light Source) dengan nilai -7 dBm dan nilai output di terima dan dibaca oleh OPM (Optical Power Meter). Dari hasil pengukuran diperoleh nilai daya output, loss, losses macrobending, dan rugi-rugi tekanan. Dari penelitian ini, hasil yang didapatkan adalah sebuah rumus matematis hubungan antara beban atau massa dengan rugi-rugi tekanan pada kabel fiber optik. Speed in terms of data transmission and communication is something that must continuously be improved in this era. Several problems can arise due to delays in sending data, either for communication purposes or for sending measurement data for certain purposes. One solution that can be done is to use optical fiber. Optical fiber is often used because of its superiority in speed in terms of communication and data transmission. Currently, in addition to communicating, optical fiber is also being developed for various purposes. One of them is in sending sensor data. This research raises the topic of the problem, namely how to design a mass sensor, using optical fiber as a mass sensor by utilizing the macrobending method. The cables used in this study used a single patch core type FC to FC wrapped with variations of 1,3,5,7, and 9 turns on elastic hoses with diameters of ¼ inch, ½ inch, 5/8 inch, ¾ inch and 1 inch. with a mass of 0.1 kg - 10 kg with a range of 200 grams. For input using an OLS (Optical light Source) with a value of -7 dBm and the output value is received and read by the OPM (Optical Power Meter). From the measurement results obtained the value of output power, loss, macrobending losses, and pressure losses. From this research, the results obtained are a mathematical formula for the relationship between load or mass and pressure losses on fiber optic cables.

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An Optical Fiber Sensing Network Supporting Weak Optical Signal Detection and a Neural Network Method for Information Collection

Journal of Nanoelectronics and Optoelectronics ◽

10.1166/jno.2021.2923 ◽

2021 ◽

Vol 16 (2) ◽

pp. 188-195

Author(s):

Keyuan Liu ◽

Haibin Li ◽

Ya Wang

Keyword(s):

Neural Network ◽

Optical Fiber ◽

Signal Detection ◽

Mobile Phone ◽

Optical Power ◽

Information Collection ◽

Identification System ◽

Power Meter ◽

Fiber Sensing ◽

Optical Fiber Sensing

The weak direct current (DC) signals detected and converted by the photodetector are output to the mobile phone by voltage/frequency switching, and the signals are processed by the mobile phone APP and audio conversion module. The photodetector is equipped with the automatic switching function to design an optical power meter and detect weak signals. Meanwhile, the optical cable identification system is analyzed and combined with the optical power meter to generate an optical fiber sensing network to improve the weak alternating current (AC) signal detection. This network needs data fusion in sensor nodes’ data collection. The cluster routing protocol is introduced and combined with the back propagation neural network (BPNN) to propose a method suitable for this photoelectric transmission and improve the information fusion and accuracy. In the experiment, the optical power meter is output in gears first, and the output waveforms are normal. The photodiode’s optical power is adjusted to obtain different frequencies on the oscilloscope. In the proposed optical fiber sensing network, weak AC signals are amplified significantly, and different optical fiber lines can be distinguished in the optical cables. The proposed information collection method can reduce network communication and node energy consumption.

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Design and Research of a Color Discrimination Method for Polycrystalline Silicon Cells Based on Laser Detection System

Applied Sciences ◽

10.3390/app9204468 ◽

2019 ◽

Vol 9 (20) ◽

pp. 4468

Author(s):

Zijian Chen ◽

Shiyu Wang ◽

Lian Zhang ◽

Zenghong Ma

Keyword(s):

Polycrystalline Silicon ◽

Detection System ◽

Measurement Data ◽

Optical Power ◽

Color Discrimination ◽

Laser Detection ◽

Coaxial System ◽

Power Meter ◽

Optical Shutters ◽

Silicon Cell

In this paper, a method of color discrimination based on sample sensitivity to light wavelength is proposed based on the reflection spectra of a large number of samples and the statistical calculation of the measurement data. A laser detection system is designed to realize the color discrimination. For the color discrimination of polycrystalline silicon cells, the most sensitive wavelength, 434 nm, and the least sensitive wavelength, 645 nm, of polycrystalline silicon cells is obtained according to this method. A laser detection system was built to measure the polycrystalline silicon cells. This system consists of two lasers, optical shutters, collimating beam expanding systems, an optical coaxial system, sample platform, collecting lens, and optical power meter or optical sensor. Two laser beams of different wavelengths are beamed coaxially through the optical coaxial system onto a polycrystalline silicon cell and are reflected or scattered. The reflected or scattered lights are collected through a lens with a high number aperture and received separately by the optical power meter. Then the color value of the polycrystalline silicon cell in this system is characterized by the ratio of light intensity data received. The system measured a large number of previous polycrystalline silicon cells to form the different color categories of polycrystalline silicon cells of this system in the computer database. When a new polycrystalline silicon cell is measured, the color discrimination system can automatically classify the new polycrystalline silicon cell to a certain color category in order to achieve color discrimination.

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