Can we use tungsten bulb as a light source for the optical Fibre?
Most fiber optic light sources use an MR16 projector lamp, designed for use in slide projectors. The lamp is made with a coiled tungsten filament and quartz glass envelope. Only 20\% of the lamp’s output is given off in the visible (400-780nm) region of light; .
Which type of light source is used in fiber optic cable?
The light source is usually called a “fiber optic illuminator” and consists of a bright light source and often some optics to efficiently focus light into the fiber. Sources must be bright, so quartz halogen or xenon metal halide lights are commonly used.
Why does tungsten filament give off light?
Tungsten, like in an incandescent light bulb, glows due to electric current heating it to high enough temperatures for it to glow. The electrons in the electric current collide with ions in the conductor (tungsten) and cause them to scatter and their motion becomes random rather than aligned.
What wavelength is tungsten?
Tungsten incandescent lamps are thermal radiators that emit a continuous spectrum of light extending from about 300 nanometers, in the ultraviolet region, to about 1400 nanometers, in the near infrared region.
Which light bulb contains tungsten?
incandescent bulb
An incandescent bulb typically consists of a glass enclosure containing a tungsten filament.
Why LED is used in optical fiber?
Light emitters are a key element in any fiber optic system. This component converts the electrical signal into a corresponding light signal that can be injected into the fiber.
Why is tungsten used for light bulbs?
Incandescent bulbs typically use a tungsten filament because of tungsten’s high melting point. A tungsten filament inside a light bulb can reach temperatures as high as 4,500 degrees Fahrenheit. Without this glass covering and the vacuum it helps create, the filament would overheat and oxidize in a matter or moments.