Noc18 ee28 lecture 41 erbium doped fiber amplifier iit kanpur july 2018.
Erbium doped fiber amplifier working.
A length of fiber with the element erbium added can act as an amplifier for light in the 1550 nm wavelength region.
The edfa is pumped with light at a wavelength of 980 nm.
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.
An external semiconductor laser couples light into the fiber at infrared wavelengths of either 980 or 1480 nanometers.
01 fiber amplifiers erbium doped fiber amplifiers.
An erbium doped fiber amplifier edfa is a device that amplifies an optical fiber signal.
It is used in the telecommunications field and in various types of research fields.
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.
A relatively recent advance in fiber optics is the development of the erbium doped fiber amplifier edfa.
This action excites the erbium atoms.
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.
An edfa is doped with a material called erbium.
Or edfa is an optical device that amplifies the optical signals without optoelectronic and electro optical conversion.
Erbium dopped fiber amplifier edfa basics working characteristics.
Is a pioneer in fiber lasers and fiber amplifiers with areas covering industrial defense aerospace biomedical telecommunication and research areas.
The signals and pump are combined through a wdm coupler and launched into an erbium doped fiber edf.
The amplified output signals can be transmitted through 60 100km before further amplification is required.
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.
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.
