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Khatami S S, shariati B, Dabbagh Kashani F, Mirkazemi S M. The Effects of Changes of Current and Temperature on the Selection of Filter for Free Space Optical (FSO) Communication. ICOP & ICPET _ INPC _ ICOFS 2015; 21 :1225-1228
URL: http://opsi.ir/article-1-685-en.html
URL: http://opsi.ir/article-1-685-en.html
1- Iran University of Science and Technology
2- Iran university of science and technology
2- Iran university of science and technology
Abstract: (3646 Views)
Semiconductor lasers play an important role in free space optical communications for capability of direct modulation and changing the power by changing the current. The changes of current and temperature of the system alter the wavelength and these changes affect the optical receiver system design and in particular its filters. In this article, wavelength chirping of semiconductor laser due to changes in current and temperature have been measured. Based on the range of variation, suitable combined filter consisting of a low pass filter and high pass filter was selected. The measurement results are presented using graphs and charts.
Keywords: Wavelength chirping, Semiconductor laser, Optical filter, Free Space Optical (FSO) Communication
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