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Abstrak :
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 insertion losses that is 6 and 7 dB are greater than the theoretically calculation that is 1.3 dB. The modulated signal has been measured as we t t ; the shape of the signal does not change after passing through the switch and on the other hand the amplitude of the output signal. is tower than the input signal due to the transmission Loss. I t is concluded that the experimental model of sliding prism demonstrate the potential application of planar micro lens in optical switch device.

Abstrak :
A study on the design and construction of measurement system of electric current of power line has been carried out. The electromagnetic induction on inductor placed near a power line was used as modulator signal of laser diode. The modulator signal in frequency signal form is obtained by converting the amplitude of induced voltage into frequency signal by voltage-to-frequency converter. The optical light of laser diode modulated by the frequency signal was transmitted by optical fiber. At the output of the fiber, the optical light was detected and converted by optical detector into electrical signal. The electrical signal was then demodulated and amplified by a receiver to be measured by a frequency counter. The experimental result shows a linear property of induced voltage as a function of current in the power line; the frequency as a function of voltage and current is also linear; the frequency on transmitter is the same with the frequency on receiver. It is concluded that the system designed and constructed in this study is applicable for remote measurement of electric current of power line.

Abstrak :
The expanded 4th edition of this classic optics text is aimed at those wishing to apply their knowledge of optics to engineering problems, and provides a sound introduction to the basic principles of optics for engineering students. It describes fundamental material including Fourier optics, diffraction theory, geometrical optics, and lenses, and goes on to cover important topics such as optical signal processing, holography, tomography, optical communication, electro- and acousto-optic devices, integrated optics, 3D imaging and optical distance measurement.