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Exercise 9

In: Computers and Technology

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* Forward Biased LED is a voltage applied to a circuit or device in the direction that produces the larger current. * Incoherent Light is light in which the electric and magnetic fields of photons are completely random in orientation. * Output Pattern or NA of the light source directly relates to the energy coupled into the core of the optical fiber. * Output Power is a typical LED light source used in fiber-optic communications is * 10dB or more below the lowest power laser light source. * Modulation Speed is the speed of the light source in fiber optics. * Core diameter mismatch occurs when there is a difference in the core diameters of the two optical fibers. * Current is the flow of electrons in a conductor. * Avalanche photodiode is a specialized diode designed to use the avalanche multiplication of photocurrent. * Responsivity is the measure of how well a photodiode converts a wavelength or range of wavelengths of optical energy into electrical current. * Optical subassembly is the portion of a fiber-optic receiver that guides light from the optical fiber to the photodiode. * Dynamic range is the difference between the maximum and minimum optical input power that an optical receiver can accept. * Operating wavelength is the wavelength at which a fiber-optic receiver is designed to operate. * Fiber-optic coupler is a component used in fiber optic systems with one or more input fibers and one or several output fibers. * Optomechanical switch redirects an optical signal by moving fiber or bulk optic elements by means of mechanical devices. * An optical attenuator reduces the intensity of light waves, usually so that the power is within the capacity of the detector. * Optical isolator a component used to block out reflected and other unwanted light. * Wavelength division multiplexing is a method of…...

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