Ditemukan 3 dokumen yang sesuai dengan query
Ucuk Darusalam, author
Pada penelitian ini dilakukan perancangan konfigurasi perangkat optik untuk mengukur konsentrasi fitoplankton dalam medium cair Konfigurasi perangkat tersebut bekerja dengan memanfaatkan fenomena fluoresensi, yang terdiri dari laser dioda ungu (A = 405nm, P = 4mW, repetisi pulsa = l ms), curette, filter optik, dan fotodioda. Dari pengujian terhadap kultur ('hlurellu...
Depok: Fakultas Teknik Universitas Indonesia, 2008
T24402
UI - Tesis (Open) Universitas Indonesia Library
Ucuk Darusalam, author
Atmospheric turbulence is the major problem in FSO communications where beam wander and spatial noise modulation into optical propagation can cause severe problems result in performance degradation. Beam wander and spatial noise leads to fluctuations in signal intensity and maximum reception of noise on photodetector.
Generally, spatial-diversity, time-diversity, cooperative diversity, photo...
Depok: Fakultas Teknik Universitas Indonesia, 2015
D2094
UI - Disertasi (Membership) Universitas Indonesia Library
Ucuk Darusalam, author
Beam wander and spatial noise that are modulated on optical propagation produce noise modulation in the signal spectral before being received by a Photodetector (PD). In order to suppress noise modulation in the signal spectral, we present an Optical Spatial Filter (OSF) method that is composed of the cone reflector...
Depok: Faculty of Engineering, Universitas Indonesia, 2015
UI-IJTECH 6:4 (2015)
Artikel Jurnal Universitas Indonesia Library
