The small signal EDFA fiber amplifier is used to amplify the weak light and then PIN detector for photoelectric conversion, which has high signal-to-noise ratio and high temperature adaptability.
EDFA as a preamplifier for photoelectric detection applications to achieve the amplification of weak light signals can greatly avoid the introduction of noise. After amplification, a PIN-type photodetector is used to realize the photoelectric conversion. The PIN detector is simple in structure, more linear and more adaptable to temperature.
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