Metrologi Optik Perkembangan dan Aplikasinya
Transcript of Metrologi Optik Perkembangan dan Aplikasinya
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Metrologi dan Pengukuran Optik
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Outline
• Metrologi optik
• Pengembangan sistem pengukuran optik di ITS (sensor serat optik)
• Standar pengukuran optik
• Trend metrologi optik
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• Metrologi optik
• Pengembangan sistem pengukuran optik di ITS (sensor serat optik)
• Standard pengukuran optik
• Trend metrologi optik
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“When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of meager and unsatisfactory kind.”
Lord Kelvin, Scientist 1824 - 1907
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Metrologi Optik
Definisi: sains dan teknologi pengukuran menggunakan cahaya.
Contoh:
• Pengukuran jarak menggunakan laser
• Pengukuran suhu berdasarkan emisi panas menggunakan sensor IR
• Pengukuran daya optis menggunakan fotodioda, power meter
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Penguasaan dan pemanfaatan cahaya dus Metrologi optik dalam berbagai teknologi dan aplikasi (industri manufaktur, telekomunikasi, medis) dapat
meningkatkan taraf kehidupan manusia yang lebih baik.
Mengapa diperlukan Metrologi Optik?
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Kuantum optik
Elektromagnetik optik
Optika gelombang
Optika geometri
Hakekat cahaya dalam IPTEK dapat dijelaskan melalui berbagai konsep.
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Konsep disain sistem metrologi optik
Fisika optik interaksi cahaya-obyek
(sifat cahaya hasil interaksi: hamburan,
difraksi, interferensi, dsb)
Disain optik metoda optik, komponen optik (filter, lensa, serat
optik, dsb)
Sumber cahaya laser, broadband source,
led, dsb
Photodetector fotodioda, image sensor,
camera
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Contoh sistem metrologi optik untuk inspeksi kualitas permukaan obyek
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Displacement measurement Michelson Interferometer Fiber optic displacement tranducer
Object to be measured
Springer Handbook Metrology and Testing, 2011
resolution tens nm – 60 μm
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Jembatan Suramadu
Located in Surabaya-Indonesia, conecting Java Island and Madura Island Total length : 5,438 m Opening date: 10 June 2009
Sensor-sensor suhu dan stain berbasis serat optik fiber bragg grating (FBG)
digunakan untuk memantau kondisi structure steel dan structure concreate.
http://www.testindo.com/article/53/structural-health-monitoring-system-jembatan-suramadu
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Broadband Source
FBG 1 FBG 2 FBG N
A wavelength interogator
Or Demodulation system for the
Wavelength Division Multiplexing – FBG Sensors
Sistem pengukuran strain/suhu menggunakan
sensor FBG
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• Metrologi optik
• Pengembangan sistem pengukuran optik di ITS (sensor serat optik)
• Standard pengukuran optik
• Trend metrologi optik
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“An Optical Sensor is a photonic system in which the measurand, or input signal (Vi), introduces modifications or modulations in some of the characteristics (transmission, reflection, dispersion, absorption, etc) of light in an optical system, and that after being detected, processed and conditioned, the system will deliver an output signal (Vo), usually in the electric domain, which will be a valid reproduction of the object variable... If any of the processes or parts use fiber optic technology, a subdivision of the OS known as Fiber-Optic Sensors (FOS), or Optical Fiber Sensors (OFS), is created.”
(Lopez-Higuera, 1998)
Definisi sensor serat optik
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Mengapa digunakan sensor serat optik
Sensor strain gauge
Fiber optic equivalent
• Dibuat dari bahan dielektrik: kebal
terhadap medan EM
• Dapat bekerja pada suhu tinggi &
lingkungan ekstrem
• Remote monitoring
• Mudah perawatan
• Dapat bekerja secara multipleksi
• Ringan, kecil dan fleksibel
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Fundamentals of optical fiber
• Serat optik silika (SOK) – Low attenuation
– Silica glass or fused quartz
– Small core achievable (single mode)
– More fragile than other fibers
• Serat optik plastik (SOP) – Large core diameter – easily coupled & handled
– Narrow bend radius – more robust
– Higher attenuation
• Lain-lain – Microstructured fibers
– Hollow core fibers
– Photonic crystal fibers
Tipe Serat Optik
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Light intensity, wavelength, phase
Jenis Sensor Serat Optik
Sensor Serat Optik
Berbasis intensitas
Berbasis spektrum
Berbasis interferometric
Unjuk kerja +/++ ++/+++ +++
konfigurasi +++ ++ +
biaya +++ ++ +
Semakin banyak + semakin baik
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Other, 12%
POF, 10%
Photonic Crystal fiber,
11%
FOG, 7%
Fiber Bragg Gratings,
31%
Interferometric,
14%
Scattering,
11%
Faraday
Rotation, 1%
Fluorescense,
3%
Optical Fiber Sensors Conference 2007
Teknologi Sensor Serat Optik
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SMS Fiber Structure
z axis: propagating
direction Input SMF
MMF
Output SMF
singlemode fiber (SMF), multimode fiber (MMF)
Serat optik berstruktur jenis Singlemode-Multimode-Singlemode (SMS) dikembangkan sebagai sensor. Sensor ini memiliki keunggulan: mudah dibuat, murah, dan memiliki spesifikasi serupa dengan sensor FBG.
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Fiber optics fusion splicer
SMF and MMF
Fiber optics tool kit
SMS fiber structure
Fabrication of SMS Fiber Structure
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Sistem pengukuran strain/suhu dengan sensor serat optik SMS
konfigurasi
Respon OTDR
Microwave and Optical Technology Letters, Vol. 55(11) 2576-2578, 2013. Photonics Sensors, Vol. 3(3) 262-266, 2013
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Included are one meter of 1000 µm plastic optical fiber, matched LED and photodetector (IF E91A and IF D92, respectively) with integral fiber optic connectors, instructional design information and application hints.
Serat Optik Plastik / Polymer Optical Fiber (POF)
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Long range displacement sensor
Micrometer Translation Stage Imperfection
s
Power Meter Source
A C
C’ Plastic Optical Fiber
B
Power Supply
Detector
A bent of POF with structural imperfection NAin
NAout
The POF with the structural imperfection
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U-bend pH sensor
• Bagian cladding dikupas dan diganti dengan material selubung sensitif terhadap pH.
• Ukuran diameter lekukan-U berpengaruh pada unjuk kerja sensor.
• Material selubung dapat dimodifikasi untuk rentang pH lain.
pH O
utp
ut
po
we
r (μW
)
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Sistem monitoring pernafasan
A POF breathing sensor
A display of data acquitision
• Sensor mendeteksi perubahan kelembaban relatif yang terjadi ketika tarik dan hembus nafas
• Pola nafas dapat ditampilkan secara real time dan dapat dihitung laju/kondisi pernafasan.
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• Metrologi optik
• Pengembangan sistem pengukuran optik di ITS (sensor serat optik)
• Standard pengukuran optik
• Trend metrologi optik
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Katalog Standar Pengukuran Optik
17.180: Optics and optical measurements
17.180.01: Optics and optical measurement in general
17.180.20: Colours and measurement of light
17.180.30: Optical measuring instruments
including spectroscopes, geodetic instruments,
laser equipment, fiber optics, opthalmic optics,
optical equipment-materials-components,
photographic equipment lenses
17.180.99 Other standards related to optics and optical
measurement
www.iso.org ISO (international Organization for Standardization), Geneva Switzerland
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Beberapa standard untuk sistem laser
• ISO 12005:2003, Test methods for laser beam parameters - Polarization
• ISO 13695:2004, Test methods for the spectral characteristics of lasers
• ISO 11810-1:2005, Test method and classification for the laser resistance of surgical drapes and/or patient protective covers
• ISO 13697:2006, Test methods for specular reflectance and regular transmittance of optical laser components
• ISO 17915:2013, Measurement method of semiconductor lasers for sensing
http://www.iso.org/iso/home/store/catalogue_ics/catalogue_ics_browse.htm?ICS1=31&ICS2=260&&published=on
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Beberapa standard untuk serat optik
• IEC 61745: end-face image analysis procedure for the calibration of optical fiber geometry test sets
• IEC 60793-1-40(46): optical fibers, measurement methods and test procedures-Attenuation, (Transmittance)
• IEC 61300-3-4: fiber optics interconnecting devices and passive components
• IEC 61280-1-1: fiber optic communication subsystem basic test procedures, for SMF cables
• IEC 60793-1-22: optical fibers – length measurement • IEC 61746:calibration of optical time domain reflectometers • IEC 62129: calibration of optical spectrum analyzer
www.iec.ch
IEC (International Elctrotechnical Commission), HQ in Geneva Switzerland
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Beberapa standar keselamatan optik • American National Standards Institute (ANSI) Z136.1-
2000, “Safe Use of Lasers” • British Standards Institute (BSi), BS EN 60825 • BS EN 60825-1 Safety of laser products, Part 1:
Equipment classification and requirements. • BS EN 60825-2 Safety of laser products, Part 2 : Safety
of optical fibre communications systems. • IEC 60825-3 Safety of laser products, Part 3: Guidance
for laser displays and shows. • PD IEC TR 60825-14:2004 Safety of laser products, Part
14: A user’s guide. • British Standard EN 207: 1999 EN 207: 1999 Filters and
Equipment used for Personal Eye-Protection Against Laser Radiation.
• British Standard EN 208: 1994 Personal Eye-Protection Used for Adjustment Work on Lasers and Laser Systems.
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• Metrologi optik
• Pengembangan sistem pengukuran optik di ITS (sensor serat optik)
• Standard pengukuran optik
• Trend metrologi optik
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Standar Pengukuran dan Metodologi Pengukuran
Springer Handbook Metrology and Testing, 2011
Sesuai dengan perkembangan IPTEK, standar pengukuran dan metodologi pengukuran dapat dan selalu diperbaharui.
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Aspek pendorong
Metrologi 2020
Ekonomi karbon-rendah
Inovasi R&D
Kenyamanan dan keamaan hidup umat
manusia
sistem untuk memantau kondisi bumi dan lingkungan hidup yang akurat
model manufaktur yang cerdas dan efisien berdasarkan kebutuhan
alat monitoring kesehatan yang lebih presisi, dan kebutuhan untuk merawat sumber daya dan infrastruktur yang aman
Metrology for the 2020s, 2012
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Arah pengembangan metrologi
Ketertelusuran dan kepresisian yang
lebih baik
Pengukuran yang dapat bekerja pada berbagai situasi dan kondisi lingkungan
terhubung dengan jaringan
global/internet
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Kerjasama antar stake-holders
Badan metrologi, Badan
standarisasi, dan pemerintah
Pihak Industri Perguruan
Tinggi/Institut
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Penutup
• Telah dibahas secara ringkas ruang lingkup metrologi optik, perkembangan standarisasi pengukuran optik, dan pengembangan sensor serat optik di ITS.
• Perkembangan IPTEK metodologi pengukuran optik mendorong terciptanya standar pengukuran yang lebih baik lagi.
• Dalam konteks pembangunan dan pengembangan metrologi di Indonesia, perlu dilakukan kerjasama antara berbagai pihak antara lain Badan Standarisasi Nasional, Badan Metrologi, Departmen Pemerintah terkait (Deperindag, Kemenristek), pihak pengguna di Industri, dan peneliti di perguruan tinggi maupun di lembaga penelitian.
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Terima kasih