Optical Sources Source optics berfungsi sebagAI transmitterLight a membring information. Sourcethe must memeet the requirements of adalah (Singer, 1991, Thomas, 1995): • The light that is produced must centurymedium monochromatis. • Has high power output yes with intensity high so that it can overcome the dampingof along the fiber channel.
Easily modulated by sin andal information. • Has a small dimension da n mudah connected by fiber. Source optics which umuI'm used toopti fiber communication systemk is LED ( lightemitting diode) dan LD (laser diode). Kboth of them is a semi arrangementconductor connection P-N when given a forward bias will radiate energy optics in the form of photons. Bigenergy photon emitted is (Zanger, 1991): pE h f= ⋅
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(1) h is the Planck constant (6.626 x 10-34 J-s) and f is the frequency of the gelombang cahaanda yangemitted. With a demicn wavelengthemitted (Zanger, 1991): gh cEλ⋅= (2) Eg is energyband gap (ctake the field) and c is light speedanda (3 x 108 m/s). The intensity of the light produced by the LED is moreh low dibaLED with LD, up to LEDgenerally only usedn for fiber optic systems pende distancek like pada buildings andplane flying. Whereas LD with intensityhigh and coherentlift as appropriate on the wireless communication systemk far away (Thomas, 1995). LED Burrus is one of a kind LEDheterojunction dengan beet surface.
Easily modulated by sin andal information. • Has a small dimension da n mudah connected by fiber. Source optics which umuI'm used toopti fiber communication systemk is LED ( lightemitting diode) dan LD (laser diode). Kboth of them is a semi arrangementconductor connection P-N when given a forward bias will radiate energy optics in the form of photons. Bigenergy photon emitted is (Zanger, 1991): pE h f= ⋅
fiber optic installer certification
(1) h is the Planck constant (6.626 x 10-34 J-s) and f is the frequency of the gelombang cahaanda yangemitted. With a demicn wavelengthemitted (Zanger, 1991): gh cEλ⋅= (2) Eg is energyband gap (ctake the field) and c is light speedanda (3 x 108 m/s). The intensity of the light produced by the LED is moreh low dibaLED with LD, up to LEDgenerally only usedn for fiber optic systems pende distancek like pada buildings andplane flying. Whereas LD with intensityhigh and coherentlift as appropriate on the wireless communication systemk far away (Thomas, 1995). LED Burrus is one of a kind LEDheterojunction dengan beet surface.
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