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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Design of stabilized optical source
 Novák, Michal ; Chmelař, Milan (referee) ; Filka, Miloslav (advisor)
The aim was to design a stabilized optical light source operating at a wavelength of 1 625nm, suitable for measuring the attenuation of optical fiber transmission method. Source should be stabilized by optical feedback and output should be washed 0dB, 5 db and 10 db. There have been described in various peripheral components such as LEDs and laser diodes, the method of dividing the optical signal and its measurement of a PIN photodiode and avalanche photodiode. Furthermore, optical attenuator, which in this design has played an important role. With it's optical power is stabilized. They were also briefly described three basic methods of measuring attenuation of optical lines. Proposal for construction has been described switched power supply that provides voltage and current surge into the laser diode and the voltage stabilizer is used to power optical attenuator. The work also solved the optical attenuator control voltage output current from the photodiode.
Detailed record
Design of stabilized optical source
 Novák, Michal ; Chmelař, Milan (referee) ; Filka, Miloslav (advisor)
The aim was to design a stabilized optical light source operating at a wavelength of 1 625nm, suitable for measuring the attenuation of optical fiber transmission method. Source should be stabilized by optical feedback and output should be washed 0dB, 5 db and 10 db. There have been described in various peripheral components such as LEDs and laser diodes, the method of dividing the optical signal and its measurement of a PIN photodiode and avalanche photodiode. Furthermore, optical attenuator, which in this design has played an important role. With it's optical power is stabilized. They were also briefly described three basic methods of measuring attenuation of optical lines. Proposal for construction has been described switched power supply that provides voltage and current surge into the laser diode and the voltage stabilizer is used to power optical attenuator. The work also solved the optical attenuator control voltage output current from the photodiode.
Detailed record

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