01 fiber amplifiers erbium doped fiber amplifiers.
Erbium doped fiber amplifier working.
Edfa serves as a kind of optical amplifier which is doped with the rare earth element erbium so that the glass fiber can absorb light at one frequency and emit light at another frequency.
Erbium doped fiber is the core technology of edfa which is a conventional silica fiber doped with erbium ions as the gain medium.
An edfa is doped with a material called erbium.
The core of a silica fiber is doped with trivalent erbium ions er 3 and can be efficiently pumped with a laser at or near wavelengths of 980 nm and 1480 nm and gain is exhibited in the 1550 nm region.
This action excites the erbium atoms.
A relatively recent advance in fiber optics is the development of the erbium doped fiber amplifier edfa.
Erbium dopped fiber amplifier edfa basics working characteristics.
The signals and pump are combined through a wdm coupler and launched into an erbium doped fiber edf.
An erbium doped fiber amplifier edfa is a device that amplifies an optical fiber signal.
The term doping refers to the process of using chemical elements to facilitate results.
The edfa is pumped with light at a wavelength of 980 nm.
A length of fiber with the element erbium added can act as an amplifier for light in the 1550 nm wavelength region.
Edfa erbium doped fiber amplifier is an optical device used to compensate optical signal attenuation caused by fibers and components to increase optical transmission distance.
Erbium yterbium doped fiber amplifier 1u eydfa c data eydfa series are mainly used in am catv digital catv fttx pon which is a high power multiport output optical fiber amplifier it s spectral bandwidth is in 1540 1563nm whichis mainly designed for catv or 1 8 itu wavelength.
Erbium doped fiber amplifier edfa is an optical amplifier used in the c band and l band where loss of telecom optical fibers becomes lowest in the entire optical telecommunication wavelength bands invented in 1987 edfa is now most commonly used to compensate the loss of an optical fiber in long distance optical communication another important characteristic is that edfa can amplify.
An external semiconductor laser couples light into the fiber at infrared wavelengths of either 980 or 1480 nanometers.
Noc18 ee28 lecture 41 erbium doped fiber amplifier iit kanpur july 2018.
The amplified output signals can be transmitted through 60 100km before further amplification is required.
The erbium doped fiber amplifier edfa is the most deployed fiber amplifier as its amplification window coincides with the third transmission window of silica based optical fiber.
