EDFA&YDFA Optical Amplifier

An optical amplifier is a device which receives some input signal?light?and generates an output signal with higher?optical power. Typically, inputs and outputs are?laser beams?(very rarely other types of?light beams), either propagating as?Gaussian beams?in free space or in a?fiber. The amplification occurs in a so-called?gain medium, which has to be “pumped” (i.e., provided with energy) from an external source. Most optical amplifiers are either?optically?or electrically pumped.

Different kinds of amplifiers differ very much e.g. in terms of saturation properties. For example, rare-earth-doped laser gain media can store substantial amounts of energy, whereas optical parametric amplifiers provide amplification only as long as the pump beam is present. As another example, semiconductor optical amplifiers store much less energy than fiber amplifiers, and this has important implications for optical fiber communications.

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Applications of Optical Amplifiers

Typical applications of optical amplifiers are:

An amplifier can boost the (average) power of a laser output to higher levels (→ master oscillator power amplifier = MOPA).

It can generate extremely high peak powers, particularly in ultrashort pulses, if the stored energy is extracted within a short time.

It can amplify weak signals before photodetection, and thus reduce the detection noise, unless the added amplifier noise is large.

In long fiber-optic links for optical fiber communications, the optical power level has to be raised between long sections of fiber before the information is lost in the noise.

Beijing Rofea Optoelectronics Co., Ltd. offers a product line of commercial Electro-optic modulators, Phase modulators, Intensity modulator, Photodetector, Laser light sources, DFB lasers,Optical amplifiers, EDFA, SLD laser, QPSK modulation, Pulse laser, Light detector, Balanced photodetector,APD photodetector,?Laser driver, Fiber optic amplifier, Optical power meter, Broadband laser, Tunable laser, Optical detector, Laser diode driver, Fiber amplifier. We also provide many particular modulators for customization, such as 1*4 array phase modulators, ultra-low Vpi, and ultra-high extinction ratio modulators, primarily used in universities and institutes.?

Hope our products will be helpful to you and your research.

Amplifier