Ditemukan 108 dokumen yang sesuai dengan query
Cut Semayang Muda
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Kopling antara amplifier permukaan miring dan fiber taper lens-ended diselidiki secara teori. Penelitian teori didasarkan pada model gelombang bidang tiga dimensi yang dihitung melalui pergeseran fasa akibat permukaan iring. Kopling diselidiki berkenaan dengan parameter-parameter berkas dari pandu gelombang amplifier lens-ended, dan juga berkenaan dengan posisi fiber. Terjadinya rugi-rugi kopling karena permukaan miring dan karena variasi dari uji lens yang terbaik, rugi untuk permukaan miring 10° ditemukan lebih kecil dari 0.5 dB dibandingkan amplifier permukaan normal.
The ...
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1999
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Sudirman
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ABSTRACT
The frequency dobled Rd: YAG laser (532 nm/10ns, 15mj/pulse) uses a pulsed, frequency dobled; which provides a monochromatic, energy source with extremely high peak power and to has capability to develop of latent fingerprint on various surface. In the porous surfaces, this laser to has superiority, the compared with the development another methods, like powder and chemical method in latent fingerprint development.
The high peak power of the laser causes Palmar sweat: contain a ...
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1995
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Syamsir Dewang
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ABSTRACT
Laser induced thin film production (LITFP) technique was employed for making plumbum (Pb) thin film by nitrogen laser deposition in miniature scale. The energy of nitrogen laser operated at 12.5 kv, 90 torr was 3.5 mj with 5 ns pulse duration, thus producing peak power at around 0.7 MW. Pb plasma of 1 cm diameter was generated in each laser bombardment, producing thin film above the glass substrate.
The thin film characteristics were ...
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1993
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
A. Juliati Junde
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With the growth of optical communications using Low toss optical. fibers. the need for an optical switching system that exchanges optical. signals without any optoelectric and electro optic converter may arise. In this study, an experimental model of sliding prism switch using planar micro lens array has been constructed. The performance of the constructed switching device was studied by measuring insertion Loss. coupling efficiency and cross talk. The experiment shows that the measured results of ...
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Depok: Universitas Indonesia, 1992
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Mohammad Amir
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Development of optical fiber communication system is mainly due to the progressive influence of optical source. Laser diode as optical source in optical transmission system is of great attention because laser diode produces coherent monochromatic-light. Furthermore, laser diode has a high quantum efficiency, can be modulated at a very high speed, has small size and compact. The application of such optical source is also wide, ranging from optical signal communication to radar optics. Therefore, laser ...
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Depok: Fakultas Teknik Universitas Indonesia, 1988
T56
UI - Tesis Membership Universitas Indonesia Library
Basrul Bahar
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ABSTRACT
Probing of the atmospheric parameters have been done by many scientists since a century ago up to present with various techniques. A simple system of laser radar without using any collimated beam but a reflected mirror as transmitter and a small cassegranian type (10.5 an in diameter) telescope as receiving was constructed to investigate the relative Mie backscattering coefficient by utilizing a nitrogen laser as a light source in the range of measurement bellow 1 ...
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Depok: Fakultas Teknik Universitas Indonesia, 1988
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Hawkes, John
New York: Prentice-Hall, 1995
621.366 HAW l
Buku Teks Universitas Indonesia Library
Jakarta: Program Pascasarjana Universitas Indonesia, 1992
621.366 PER
Buku Teks Universitas Indonesia Library
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The purpose of this reserach is to find out the influence of laser shooting to the ovaries stem of eye,ablation of crab's eye to the level of egg's maruty,the diameter of eggs and the number of eggs scylla serrata.... ...
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Artikel Jurnal Universitas Indonesia Library
Andreas Dewanto
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Thesis ini mengemukakan sistem deteksi jarak obyek menggunakan Laser HeNe. Sistim pengukuran jarak ini menggunakan sinar LASER HeNe sebagai media penghantar informasi, sedangkan obyeknya menggunakan dua jenis material yaitu : obyek yang memantulkan sinar sempurna ( memiliki koefisien refleksi tinggi ) dan obyek yang memantulkan sinar tidak sempurna ( memiliki koefisien refleksi rendah ).
Sistim pengukur jarak ini dapat mendeteksi jarak sebuah obyek atau benda, pada jarak tertentu di alam terbuka maupun ...
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2000
T1458
UI - Tesis Membership Universitas Indonesia Library
